JB/T 10440-2004 Performance design specification for furnace and burner of large pulverized coal boiler
Some standard content:
ICs2706
Machinery Industry Standard of the People's Republic of China
JB/T10440—2004
Performane design standard for furnaces and burners of targe-capacity pulverized-coal-fired 2004-03-12 release
2004-08-01 implementation
National Development and Reform Commission of the People's Republic of China before release
2 Current introduction documents
3 Technical adjustment
4 Selection of combustion mode
5 Determination of effective cumulative energy of boiler and calculation of boiler barrier steam load 51 Energy sheet method for effective capacity
5.2 Calculation formula of parameters of boiler thermal parameters,
(Primary selection of energy system characteristic parameters and ignition condition parameters of the actual heat treatment system (the principle of selection of thermal treatment system parameters)..
(.2 Planning of combustion type furnace barrier thermal characteristics (BMCR working condition recommended range,.3 Making a good furnace film thermal characteristics And magnetic dyeing device: integer selection 6.4 plan city combustion type flow hole combustion broadcast parameter R distribution sample impulse combustion method passport thermal characteristics and burner working parameters selection 7.1 combustion mode Shanghai stock thermal parameters (BMCR working conditions? For the middle combustion mode thermal whole province working parameters EMR working parameters selection W type average combustion mode protection heat knife characteristic parameters and burner "conditions selection. 1W open flame combustion mode Shanghai cavity thermal characteristic parameters BM working parameters) selection 8.2: W type fire brilliant on the way protection environment steam power standard parameters selection. X.5
W normal fire peak combustion and mode lifting the original view! W ignition range speed whole force end Xiao Ding is a condition Xin Huan R condition delivery Ze palm degree exciting way design accuracy related cost requirements
design training coal type profit verification coal and requirements || tt||The height of protective film and the temperature of the gate are selected. The next air spray environment is selected! The cooling fire bucket is the main point of the fire bucket. The combustion method is the depth ratio of the furnace chamber. The first choice is the lowest NO. The concentration is afraid of the clean application. The requirements of the protection of micro-burning efficiency are various. The combustion characteristics of the coal are generated. 9.9 The selection of the water-cooled wall cooling coefficient of the furnace can be selected. The factors to be considered when selecting the burner are the air door temperature. 9.1 The requirements of the combustion variable system for the coal refining anti-flash system 9J? The equipment of the fire control measurement and protection safety control system FSSS) 9.13 The selection of coal micro-degree: 9.1 The design of the copper furnace in the industrial area 9.15 Prevention 1. Determination of combustion performance certification values of small pulverized coal boilers JB/T1044D—2004
JR/T10440-2004
[0.1: Contents of combustion performance guarantee of steel boilers 10.2 Determination of combustion efficiency of steel boilers
O.3 Determination of minimum steady-fired load rate (BMLR) of boilers without oil injection 0.4 Non-effective concentration limit of NO in flue gas
Determination of coal ignition characteristic cycle number Rw and combustion characteristic index R (informative appendix) A.1 Ignition stability index of coal Rty
A.2 Burnout characteristic index of coal R:
Record H (informative appendix; Determination of coal ash characteristic index, Appendix (informative appendix! Coal tree stop non-primary air nozzle or 1 row of tertiary air nozzle: the calculation of the average residence time from the center to the next +, record D (informative appendix: the deduction of the combustion zone correction coefficient Zhang record E (informative appendix) reduction NO, the index of the generation of the flow record (informative record tangential combustion boiler lower furnace membrane water-cooled wall pollution coefficient, value selection record ((informative record, not called coal quality conditions recommended coal mill and pulverizing system type record H1 necessary requirements: coal characteristics, film thermal characteristics parameters and burner operating parameters on % of the influence of quality characteristics
H! Good film release effect
11.1 The influence of the number of burner workers
Appendix 1 (informative appendix) General principles for preventing the formation of burner area
The coal state itself is the characteristic of the coal || tt||Factors affecting the flue gas temperature in the furnace,
Influence of the gas field during the combustion (tangential combustion method) 1.4
1.5Selection and arrangement of collectors.
Appendix is the "Guide to the prevention of water-cooled external temperature from the temperature of the boiler" diagram. Tangential combustion boiler good furnace size diagram Figure 2 Hedge combustion boiler structure size diagram W-type fire burner boiler structure size diagram
Forbidden type in the furnace in the adjustment of the furnace structure size diagram of atmospheric pressure and the correlation diagram
According to the coal quality characteristics (V and A,) the recommended 44 collector value range, Figure A.1
Figure E2
A certain tobacco smoke bath sample combustion performance output line
A certain bituminous coal algae banana tower output
Pulverized coal boiler various types of NO and or concentration It has nothing to do with the overall temperature of the furnace. Tangential combustion method fuel level combustion principle diagram E.3 counter-compression type low N core burner diagram, machine flow, fuel type and coal structure on the thermal properties of the furnace table || tt || Table 2 Standard range of thermal parameters of the tangential combustion method furnace (BMCR 2). Table 3 Recommended range of tangential combustion method burner operating parameters (MCR ") of the formula blowing system: Table 1 Recommended range of tangential combustion method burner operating parameters (BMCR operating parameters) of the pulverizing system with the same combustion method Table 5 The influence of unit capacity and channel characteristics on the burner operating parameters Recommended range Table 6 Recommended range of thermal characteristics of the counter-compression combustion method (BMCR operating parameters) Table 7 Recommended range of tangential combustion method burner operating parameters of the direct-flow pulverizing system Burner design parameters (PMCR working condition report specification 18
JB/T10440-2004
Table 8 Recommended parameters of the middle-core system specification of the wind-fed powder-fed counter-combustion method burner (BR working condition recommended specification..12 Table type fire start combustion environment core furnace whole state characteristic integer BMCR working light recommendation specification fixed installation 0W type fire environment type dual energy wind flower drop type burner parameters (B system C recommended range W type fire trap combustion tiger double adjustment wind flow type burner working parameters (B use CR working sink) performance range 12
Guarantee the boiler can be full of 5 and the export steam spring full allowable quality range table
Coal increase machine mouth without high temperature
According to the medium characteristics Rw, Ve, A) recommended value range..The minimum recommended value of MLR for each type of boiler burning method is the heat distribution and thermal efficiency of the boiler. The heat distribution and thermal efficiency of each type of boiler are as follows: 300MW and above! The standard is for the use of coal in the furnace. The number of indicators and wet protection devices are included in the standard. The type of machine and system described in the standard is not selected. JB/T10440-2004 is the first release of the standard. 、Appendix C、Appendix D、Appendix F、Appendix G、Except H、Appendix 1、Benzene J is a material for the attached area:
This standard is proposed by the Federation of Non-Analytical Machinery Industry. This standard is sponsored by the National Boiler Standardization Technical Committee CSBTS/TC73:, and the units of this standard are: Harbin Ji Niu Coal-fired Technology Development Center, Harbin Boiler) Co., Ltd., Shanghai Automotive Protection Factory Co., Ltd., Oriental Boiler (Group: Co., Ltd., Beijing Babcock Wilcock Broken Co., Ltd., Wushuang Boiler Group Co., Ltd.
The main contributors to this standard: Xie Hanglin, Chen Ronger, Hou Liqi, Zhang Jiabiao, Zhang Suien, Han Suo, Yue Suoceng, Wu Taochun, Pu Yinsu, Zheng Wenju, Hu De
FB/T104402004
my country's top ten boiler manufacturers: The country has nearly 100 years of experience in design and manufacturing, and can produce boiler steel equipment required for various types of fuels in China. It has unique characteristics in adapting to China's national conditions. The article continues to quote Some foreign companies have digested, absorbed and improved their technologies. It can be said that they have reached the world's advanced level in design and manufacturing technology. The actual operation of boilers shows that most boiler units have good performance, but some boiler units are not fully developed. Therefore, it is necessary to summarize the experience of boiler design and operation, and form a set of energy design specifications to guide the performance design of boiler combustion equipment in the machinery industry, and provide users with the following types of boilers: Range: Large pulverized coal boiler t||Furnace and burner performance design specification
[B/T10440-2004
This standard specifies the selection of large-scale combustion mode, selection of main dimensions, selection of burner design, design energy guarantee value, and common requirements related to furnace and fuel selection design. This standard is particularly suitable for the energy and burner performance design of pulverized coal fired boilers (equipped with 300MW and above medium-power units), and can also be used for pulverized coal fired boilers below 3MW For reference only, this standard does not intend to add or expand the scope of sales, cyclone combustion boilers and liquid powder steel protection. 2 Normative referenced documents || tt || The clauses in the following documents are reduced to the clauses of this standard by citing the following standard. All other rarely used documents are subject to the following requirements: the subsequent technical errors or revisions are not required by the standard. However, the latest versions of these seven documents are not applicable to all parties involved in the research and development of the city according to this standard. The latest versions of the documents are applicable. This standard, (2 Coal Industry Law (212-2M13011722: 99) ET215 Coal calorific value determination (GB/T213-1996, egISO1928: 1995: GB/T219 Coal East Melting Processing Method (GT2191996, 9V150540: 19931GBT7 Coal Element Formula (GB476-200, CqSO62: 16GB/1374 Coal East Component Standardization Method
(H Hall 2900.48 Electrical engineering technology for fixed boiler expansion G37:5 Coal quality and coal classification (GB/F3715-1996, 9VISO1213-2:19953(0134 Performance test procedure for boiler adjustment in Beijing
G13225 Thermal power: Emission standard of waste heat from large steam boiler D435 Large and: Anti-moisture content period of combustion chamber of powder baking boiler 3 Terms and definitions
G%T2900.48 Machine GBT3715 Sales practice and the following terms and definitions apply to this standard. 3.
Pulverized coal boiler combustion mode fining madesnpulverized-coal-fired boiler combustion mode in different positions of the furnace, through: or heat structure 4 furnace to the grid, the opposite is W type secondary combustion mode 3.2
W type flame combustion mode w.flamefiringmode direct current or weak flow coal potential gas device placed in the range of special methods: make the flame flow downward first, then upward, forming a W type of flame flow combustion mode,
Lu chamber and burner performance design performancedesiguffurmaeandburners in order to achieve good flow performance, reasonable selection of furnace mode, furnace overall thermal parameters, structural size and burner parameters, etc., not color pull material, accessories and other selection and construction details. River: the performance of the fire should be high, anti-flow performance, high overflow and abrasion resistance. Low pollution can be improved by improving the residual flow of furnace cavity. JE/T104402004 Direct-fired coal pulverization system Direct-fired coal pulverization system The air and pulverized coal mixture started from the coal mill (medium-speed coal mill, fan coal mill or double-inlet and double-outlet steel ball mill) are used as the wind, and are sprayed into the furnace through the burner for film combustion. In order to increase the actual air temperature of the furnace, a military separator and an air lock grid are installed on the secondary air duct after the separator: so that the hot air can be used as the primary air of the household. The whole system is called a semi-secondary pulverization system. 35 Medium-speed pulverizing system Cual gulverlzation system with pulverizer ECM is drawn from the coal mill (a whole is a steel ball mill) The mixture is passed through a fine powder separator, and the 0% coal powder is divided into coal powder bags, and then the powder feeders are used to send them to the corresponding primary air ducts (or exhaust gas ducts) and transported to the burner for final combustion. The exhaust gas auxiliary delivery is called exhaust gas delivery, and the hot air carrying the coal powder from the initial air filling or burner is called hot air powder delivery. 3.6
Effective furnace volume is the volume part of the air used to carry out the total floating combustion and heat transfer of coal powder, and is used to calculate the volumetric heat load of the furnace. 3.7
Coal ignition stability index coalflamnabiitindezRw
The thermal stability of coal is measured by a steel thermobalance (such as TGS-2 type thermobalance), and the combustion characteristics are calculated and obtained (Appendix A).
Coal burnout characteristic index c oalburuontindexR
In order to determine the degree of burnout of coal, a shallow boiler thermobalance (TGS-2 thermobalance) is used to measure the sustained combustion characteristics and the main line of coking burnout rate: the characteristic value is taken and calculated (see Appendix A! 3.9
The slagging characteristic index of the coal ealslagglngindexR,
characterizes the slagging tendency of the coal, and is related to the fusibility and composition of the ash (see Appendix B). 3.10
Boiler minimum stable loadrainwithoutauxiliarysuppanBALR
In the design of coal type and conditions, the ratio of the boiler's stable combustion load without oil-assisted combustion to the boiler's maximum continuous load (total R) is:
The minimum stable load without auxiliary support is the ratio of the boiler's stable combustion load without oil-assisted combustion to the boiler's maximum continuous load (total R), that is: Combustion load,
Boiler maximum continuous load (BACR)
Method: Each pulverized coal boiler may have 3 different definitions of the effective supply oil stability negative rate value, that is, a design guarantee value: the required boiler retreat! Guaranteed value: Under the design coal rise correction main condition, after continuous operation for 6 hours without any negative pressure source or phenomenon, the minimum value that can be achieved:
Supply value: Considering the daily personnel protection coal quality passive improvement and control water, fire training system can report the actual operation value of the main specified load, 3.11
ND) primary NOx concentration, ceentraiun2
JR/T10440-2004
The initial NOx in the flue gas is the same as NOO and other nitrogen and hydrogen substances. 4.1 The selection of the combustion method shall be based on the coal quality characteristics. The coal quality characteristics shall be determined according to GB/T212, GH/T2.13, GR2[9, GRT·176, B/T15A, and the results of the special tests in Appendix A and B.2. The fire stability of coal is characterized by the difference in fire index of coal. Appendix A specifies the limits of the fire sensitivity ratio as follows:
H4.02: extremely fire coal:
: 1.02Nw4.67: difficult fire coal:
4.67N5.00: non-fire coal:
R5.59: easy fire coal:
Rw35.59: easy fire coal.
Rw has a certain relationship with Var in the coal. When the test value of Nw is obtained unconditionally, and the calculation ratio and chart with Rw as the number are used, Rw can be estimated by Vr. However, for the moisture content (M) of the coal (A) greater than 35%, the fire stability level should be reduced accordingly according to the calculation result, such as the most fire coal and the fire stability level should be reduced to medium and large coal. The combined relationship between RwV is as follows: R. = 3.59+0.0541ca...
4.3 The burnout characteristics of coal are characterized by the burnout characteristic index R of heavy coal. The R determination limits for burnout efficiency as specified in Appendix A are:
32.5: for burnout coal of medium maturity;
2.5R3.0: for burnout coal of medium maturity;
3.0R1: for burnout coal of medium maturity;
4. 4≤R.5.29: Easy to burn coal:
K5.29: Extremely flammable coal
4.4 Coal is characterized by the calcination characteristic index R: The R determined in Appendix B is: R1.5; Unqualified coal:
1.5K, 2.5: Medium calcination coal:
R, 2.5: Strictly calcined coal
4.5 The design can be based on the industry requirements and combined with the experience of this unit to select the coal combustion method according to the following principles: extremely hot coal (Rw5.59 or V37%) should use tangential combustion and counter-combustion: adopt blowing system. When the moisture content of the received coal is more than 3%, it is appropriate to use the wind-driven coal mill pulverizing system with a high rate of wind from the bottom up and the need for auxiliary combustion; but for the received coal with a moisture content of more than 35% and a low yield of 2m[0MJ/kg, it is also advisable to use a high-speed mill and use a relatively high heat temperature (net 380:) extremely hot coal and medium hot coal (Rw4.67 or 20% bituminous coal), it is appropriate to adopt tangential combustion or counter-combustion mode, and adopt direct blowing system. When the abrasiveness of the coal is very high, the ball mill mid-end exhaust gas powder delivery system can also be used. 2) If the coal type is 4.24%R%, 4.67% or 12%V20%, the double-hedge combustion method is generally adopted, and the steel ball machine, intermediate color treatment system, hot air powder delivery, double-inlet and double-outlet steel special coal direct powder system or ten-speed dryer direct powder system is required. When the reverse grinding mill is used, a rotary separator is used, especially for coal with a fire drying rate of 4.02%W4.24 or 8%~2. When a stronger load-reducing capacity is required and the combustion efficiency is high, and the ash H has a medium or above structure frequency, it is advisable to give priority to the W-type explosion method, and the counter-hedge combustion method can be used.
) If the fire is 4.0)2 or Var*K, or H~2.5 of anthracite, it is advisable to use W open fire combustion mode, with ball mill as the medium storage, hot air powder delivery system, double inlet and double outlet ball coal machine, high humidity point wind exchange straight secondary main powder making system
JB/T10440—2004
5 Determination of effective volume of furnace and calculation formula of thermal characteristics of furnace 5.1 Determination method of effective narrow space of furnace cavity
The effective volume of furnace cavity should be calculated according to the principle of three independent speeds: For tangential combustion boiler, the smoke window surface of the furnace outlet is generally defined as the imaginary surface formed by the vertical straight tube of the rear flame angle of the furnace, as shown in Figure 1. If the horizontal spacing of the screen type or heating surface within the above-mentioned hypothetical horizontal plane (i.e. the furnace side) is ≤457mm, then this area should be excluded from the effective volume: For the screen type heating surface of the boiler with a horizontal spacing of >457mm and the W-type flame combustion furnace, the plane in the direction of the angle end is generally larger than the required direction (see Figure 2 and Figure ?); then the flue gas can be moved backward along the water flue to the horizontal plane of the heating surface with a distance of 457m, but it cannot be enough to film the rear wall (for W-type boilers, it refers to the water-cooled wall behind the furnace wall). For tower boilers, the flue gas window is a horizontal plane, and the center line of the water pipe in the direction of the heating surface should be greater than 457, as shown in Figure 4.
b) The effective volume of the furnace is calculated based on the half height of the furnace, and the lower part is considered to be dead and solid, not including the effective volume of the furnace. The area of the furnace surrounded by the center line of the water-cooled wall tube is flat. When the design has a larger angle (small right angle up to:, D, for W-type furnace,) as shown in Figure 3, the effective volume of the furnace is calculated according to the actual volume of the angle.
Modify the furnace 1 real surface
Supplement: The vertical arrangement of the dog combustion guard is also useful for the double lake channel temperature measurement guard type Figure 1 Tangential combustion boiler furnace structure size diagram Figure 4
Figure 2 Schematic diagram of the structure size of the furnace cavity of the hedge combustion boiler | |tt||couoooo
Figure 3 Schematic diagram of the structure and size of the furnace of a W-type flame combustion boiler JB10440—2004
JB/T10440—2004
An Guo Zhong China
1-1 m
Note: In the tower-type combustion mode of Figure 8, there are also counter-burning belts and W-type belt combustion modes. Figure 4 Schematic diagram of the structure and size of the tower-type furnace:, in accordance with
, one by one, the distance between the two centers of the three cold-smelling boilers can be checked, and the unit is M. In this case, the distance between the two centers of the three cold-smelling boilers is required, and the unit is: ten ratios and the counter-burning code is the center line of the uppermost row of the burner·the wind jet For the transportation of coal to the fuel flow, the price of Shanghai adopts the full-type hot air return system, and the three internal wind nozzles are mutually connected in the center of the primary network resource end with working hours, and the service is: the ratio of wind promise: the opening volume of the lower discharge pipe center is loaded in the case, the unit is; the piece ratio is the volume above--this nozzle, or the primary wind nozzle: or the distance between the center line of the discharge pipe below the water industry, the total busy is m: the total volume of the wind nozzle or the gas nozzle once sprayed end, each time (said group, the full volume "Sichuan·second wind barrier center or time, the unit is the two points of the secondary spray center line:
furnace construction height distance, refers to the whole furnace victory item from the bottom of the ancestral pool to the dense pipe center line: time to sell the need for wide distribution, from the protection room to the oxygen protection brand water display center line height, unit price
W this Fire Hua natural flow is still Shanghai furnace peak deep goods: single [for m: fuel flow vehicle protection furnace control protection,
W level fire through the need to protect the degree. The total household bottom flow outlet on the new need to point the management of the distance, single monitoring for W type research trap burning sales production furnace brain business, from the supply quality discount and vertex will protect the control coordination consumption pipe center line ratio industry median source m: small reach, for:
cavity height, single meaning:
lamp dirty drop table strong point beauty protection disease building a distance island, single side m good dynamic deep hair, new chicken use secondary end type water drop whole pipe war can be happy distance, total letter is m; overflow net depth, cold - bottom mountain level net room, single for: cold east contend for water degree, unit,
5.2 main protection aldehyde thermal characteristics parameter calculation formula5 The design can be based on the industry, and combined with the experience of this unit, the coal can be selected according to the following principles: extremely hot coal (Rw5.59 or V37%), tangential combustion and counter-combustion: using a blowing system. When the moisture content of the received coal is more than 3%, it is appropriate to use a pulverizer-type wind turbine pulverizing system considering the need for lower combustion and auxiliary combustion; but for the received coal with a moisture content of more than 35% and a low yield of 2m[0MJ/kg, a high-speed mill is also used, and a relatively high heat temperature (net 380:) is used. For hot coal and medium hot coal (Rw4.67 or 20% bituminous coal), tangential combustion or counter-combustion is appropriate, and a direct blowing system is used. When the abrasiveness of the coal is very high, a ball mill mid-end exhaust gas powder delivery system can also be used. 2) If the coal type is 4.24%R%, 4.67% or 12%V20%, the double-hedge combustion method is generally adopted, and the steel ball machine, intermediate color treatment system, hot air powder delivery, double-inlet and double-outlet steel special coal direct powder system or ten-speed dryer direct powder system is required. When the reverse grinding mill is used, a rotary separator is used, especially for coal with a fire drying rate of 4.02%W4.24 or 8%~2. When a stronger load-reducing capacity is required and the combustion efficiency is high, and the ash H has a medium or above structure frequency, it is advisable to give priority to the W-type explosion method, and the counter-hedge combustion method can be used.
) If the fire is 4.0)2 or Var*K, or H~2.5 of anthracite, it is advisable to use W open fire combustion mode, with ball mill as the medium storage, hot air powder delivery system, double inlet and double outlet ball coal machine, high humidity point wind exchange straight secondary main powder making system
JB/T10440—2004
5 Determination of effective volume of furnace and calculation formula of thermal characteristics of furnace 5.1 Determination method of effective narrow space of furnace cavity
The effective volume of furnace cavity should be calculated according to the principle of three independent speeds: For tangential combustion boiler, the smoke window surface of the furnace outlet is generally defined as the imaginary surface formed by the vertical straight tube of the rear flame angle of the furnace, as shown in Figure 1. If the horizontal spacing of the screen type or heating surface within the above-mentioned hypothetical horizontal plane (i.e. the furnace side) is ≤457mm, then this area should be excluded from the effective volume: For the screen type heating surface of the boiler with a horizontal spacing of >457mm and the W-type flame combustion furnace, the plane in the direction of the angle end is generally larger than the required direction (see Figure 2 and Figure ?); then the flue gas can be moved backward along the water flue to the horizontal plane of the heating surface with a distance of 457m, but it cannot be enough to film the rear wall (for W-type boilers, it refers to the water-cooled wall behind the furnace wall). For tower boilers, the flue gas window is a horizontal plane, and the center line of the water pipe in the direction of the heating surface should be greater than 457, as shown in Figure 4.
b) The effective volume of the furnace is calculated based on the half height of the furnace, and the lower part is considered to be dead and solid, not including the effective volume of the furnace. The area of the furnace surrounded by the center line of the water-cooled wall tube is flat. When the design has a larger angle (small right angle up to:, D, for W-type furnace,) as shown in Figure 3, the effective volume of the furnace is calculated according to the actual volume of the angle.
Modify the furnace 1 real surface
Supplement: The vertical arrangement of the dog combustion guard is also useful for the double lake channel temperature measurement guard type Figure 1 Tangential combustion boiler furnace structure size diagram Figure 4
Figure 2 Schematic diagram of the structure size of the furnace cavity of the hedge combustion boiler | |tt||couoooo
Figure 3 Schematic diagram of the structure and size of the furnace of a W-type flame combustion boiler JB10440—2004
JB/T10440—2004
An Guo Zhong China
1-1 m
Note: In the tower-type combustion mode of Figure 8, there are also counter-burning belts and W-type belt combustion modes. Figure 4 Schematic diagram of the structure and size of the tower-type furnace:, in accordance with
, one by one, the distance between the two centers of the three cold-smelling boilers can be checked, and the unit is M. In this case, the distance between the two centers of the three cold-smelling boilers is required, and the unit is: ten ratios and the counter-burning code is the center line of the uppermost row of the burner·the wind jet For the transportation of coal to the fuel flow, the price of Shanghai adopts the full-type hot air return system, and the three internal wind nozzles are mutually connected in the center of the primary network resource end with working hours, and the service is: the ratio of wind promise: the opening volume of the lower discharge pipe center is loaded in the case, the unit is; the piece ratio is the volume above--this nozzle, or the primary wind nozzle: or the distance between the center line of the discharge pipe below the water industry, the total busy is m: the total volume of the wind nozzle or the gas nozzle once sprayed end, each time (said group, the full volume "Sichuan·second wind barrier center or time, the unit is the two points of the secondary spray center line: www.bzxz.net
furnace construction height distance, refers to the whole furnace victory item from the bottom of the ancestral pool to the dense pipe center line: time to sell the need for wide distribution, from the protection room to the oxygen protection brand water display center line height, unit price
W this Fire Hua natural flow is still Shanghai furnace peak deep goods: single [for m: fuel flow vehicle protection furnace control protection,
W level fire through the need to protect the degree. The total household bottom flow outlet on the new need to point the management of the distance, single monitoring for W type research trap burning sales production furnace brain business, from the supply quality discount and vertex will protect the control coordination consumption pipe center line ratio industry median source m: small reach, for:
cavity height, single meaning:
lamp dirty drop table strong point beauty protection disease building a distance island, single side m good dynamic deep hair, new chicken use secondary end type water drop whole pipe war can be happy distance, total letter is m; overflow net depth, cold - bottom mountain level net room, single for: cold east contend for water degree, unit,
5.2 main protection aldehyde thermal characteristics parameter calculation formula5 The design can be based on the industry, and combined with the experience of this unit, the coal can be selected according to the following principles: extremely hot coal (Rw5.59 or V37%), tangential combustion and counter-combustion: using a blowing system. When the moisture content of the received coal is more than 3%, it is appropriate to use a pulverizer-type wind turbine pulverizing system considering the need for lower combustion and auxiliary combustion; but for the received coal with a moisture content of more than 35% and a low yield of 2m[0MJ/kg, a high-speed mill is also used, and a relatively high heat temperature (net 380:) is used. For hot coal and medium hot coal (Rw4.67 or 20% bituminous coal), tangential combustion or counter-combustion is appropriate, and a direct blowing system is used. When the abrasiveness of the coal is very high, a ball mill mid-end exhaust gas powder delivery system can also be used. 2) If the coal type is 4.24%R%, 4.67% or 12%V20%, the double-hedge combustion method is generally adopted, and the steel ball machine, intermediate color treatment system, hot air powder delivery, double-inlet and double-outlet steel special coal direct powder system or ten-speed dryer direct powder system is required. When the reverse grinding mill is used, a rotary separator is used, especially for coal with a fire drying rate of 4.02%W4.24 or 8%~2. When a stronger load-reducing capacity is required and the combustion efficiency is high, and the ash H has a medium or above structure frequency, it is advisable to give priority to the W-type explosion method, and the counter-hedge combustion method can be used.
) If the fire is 4.0)2 or Var*K, or H~2.5 of anthracite, it is advisable to use W open fire combustion mode, with ball mill as the medium storage, hot air powder delivery system, double inlet and double outlet ball coal machine, high humidity point wind exchange straight secondary main powder making system
JB/T10440—2004
5 Determination of effective volume of furnace and calculation formula of thermal characteristics of furnace 5.1 Determination method of effective narrow space of furnace cavity
The effective volume of furnace cavity should be calculated according to the principle of three independent speeds: For tangential combustion boiler, the smoke window surface of the furnace outlet is generally defined as the imaginary surface formed by the vertical straight tube of the rear flame angle of the furnace, as shown in Figure 1. If the horizontal spacing of the screen type or heating surface within the above-mentioned hypothetical horizontal plane (i.e. the furnace side) is ≤457mm, then this area should be excluded from the effective volume: For the screen type heating surface of the boiler with a horizontal spacing of >457mm and the W-type flame combustion furnace, the plane in the direction of the angle end is generally larger than the required direction (see Figure 2 and Figure ?); then the flue gas can be moved backward along the water flue to the horizontal plane of the heating surface with a distance of 457m, but it cannot be enough to film the rear wall (for W-type boilers, it refers to the water-cooled wall behind the furnace wall). For tower boilers, the flue gas window is a horizontal plane, and the center line of the water pipe in the direction of the heating surface should be greater than 457, as shown in Figure 4.
b) The effective volume of the furnace is calculated based on the half height of the furnace, and the lower part is considered to be dead and solid, not including the effective volume of the furnace. The area of the furnace surrounded by the center line of the water-cooled wall tube is flat. When the design has a larger angle (small right angle up to:, D, for W-type furnace,) as shown in Figure 3, the effective volume of the furnace is calculated according to the actual volume of the angle.
Modify the furnace 1 real surface
Supplement: The vertical arrangement of the dog combustion guard is also useful for the double lake channel temperature measurement guard type Figure 1 Tangential combustion boiler furnace structure size diagram Figure 4
Figure 2 Schematic diagram of the structure size of the furnace cavity of the hedge combustion boiler | |tt||couoooo
Figure 3 Schematic diagram of the structure and size of the furnace of a W-type flame combustion boiler JB10440—2004
JB/T10440—2004
An Guo Zhong China
1-1 m
Note: In the tower-type combustion mode of Figure 8, there are also counter-burning belts and W-type belt combustion modes. Figure 4 Schematic diagram of the structure and size of the tower-type furnace:, in accordance with
, one by one, the distance between the two centers of the three cold-smelling boilers can be checked, and the unit is M. In this case, the distance between the two centers of the three cold-smelling boilers is required, and the unit is: ten ratios and the counter-burning code is the center line of the uppermost row of the burner·the wind jet For the transportation of coal to the fuel flow, the price of Shanghai adopts the full-type hot air return system, and the three internal wind nozzles are mutually connected in the center of the primary network resource end with working hours, and the service is: the ratio of wind promise: the opening volume of the lower discharge pipe center is loaded in the case, the unit is; the piece ratio is the volume above--this nozzle, or the primary wind nozzle: or the distance between the center line of the discharge pipe below the water industry, the total busy is m: the total volume of the wind nozzle or the gas nozzle once sprayed end, each time (said group, the full volume "Sichuan·second wind barrier center or time, the unit is the two points of the secondary spray center line:
furnace construction height distance, refers to the whole furnace victory item from the bottom of the ancestral pool to the dense pipe center line: time to sell the need for wide distribution, from the protection room to the oxygen protection brand water display center line height, unit price
W this Fire Hua natural flow is still Shanghai furnace peak deep goods: single [for m: fuel flow vehicle protection furnace control protection,
W level fire through the need to protect the degree. The total household bottom flow outlet on the new need to point the management of the distance, single monitoring for W type research trap burning sales production furnace brain business, from the supply quality discount and vertex will protect the control coordination consumption pipe center line ratio industry median source m: small reach, for:
cavity height, single meaning:
lamp dirty drop table strong point beauty protection disease building a distance island, single side m good dynamic deep hair, new chicken use secondary end type water drop whole pipe war can be happy distance, total letter is m; overflow net depth, cold - bottom mountain level net room, single for: cold east contend for water degree, unit,
5.2 main protection aldehyde thermal characteristics parameter calculation formula1. Method for determining the effective narrow range of the furnace cavity
The effective volume of the furnace membrane should be calculated according to the following three principles:: The hidden surface of the furnace exit smoke window of a tangential combustion boiler is generally specified as the rear of the furnace. The flame horn fire is vertical and directed! The imaginary surface formed by turning the tube straight is shown in Figure 1. If the screen or heated space between the fabrics within the above-mentioned false twist (i.e. furnace side) is ≤ 457, the area should be neutralized and removed from the effective volume of aldehydes: for furnace flushing purple boilers and W-type fires For screen-type heating surfaces with a horizontal spacing of >457mm, the plane generally extends beyond the required direction of the lower end of the folding angle, as shown in Figure 2, Figure? ;, the smoke from the furnace can be moved backward along the water flue to the horizontal distance of 457 m from the heating surface: but it cannot be enough to escape the water mark wall of the back wall (for DW-type boilers, it refers to the back of the upper furnace wall The plane of the water-cooled joint): For the tower boiler, the smoke window is - horizontal. The heating should be flat: the water pipe should be in the direction of the central line and the electricity should be large. 457, as shown in Figure 4.
b) The effective volume of the aldehyde cold furnace area is only half the height. It is considered that the lower level is a dead end and is not included in the effective volume of the furnace.) The protective area is surrounded by the center line of the water-cooled wall tube. The shape is flat and simple. When the design has a large cutting angle (the small right angle is up to:, several D, for the W-type missing furnace, it is measured as, ). As shown in Figure 3, the effective volume of the furnace is said to be according to the cut The actual volume of the character Sohui is calculated
Changed to the real face of Dou 1
Supplement: The mass shown in the photo is protected by a burning dog and is arranged for the Blood Refining Road. It is also used for the Shuanghu Road. Type protection for temperature measurement of the receiving plate Figure 1 Schematic diagram of the structural dimensions of the furnace chamber of the tangential combustion boiler Figure 4
Figure 2 Schematic diagram of the structural dimensions of the furnace chamber of the counter-fired combustion boiler
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Figure 3W Type flame combustion boiler furnace structural size representation National JB10440-2004
JB/T10440-2004
An Guozhong China
1-1 institute m
Note: Figure 8 The tower-type burning mode is divided into several directions. In addition, the furnace furnace structure is shown in Figure 4. The tower-type layout has a counter burning zone and a W-shaped burning zone. Diagram: Dimensions, symbol
, one by one. , can check the distance between the center and the distance between three and two. In this paper: the unit M is the required distance between the loaders, and the unit is: ten ratio and the burner is the highest burning code. The central line of exhaust and Taifeng sprays the coal to the combustion flow rate, and adopts a mid-circuit full-type hot air differential navigation system. : Discharge ratio Fengnuo: The volume contained in the center of the discharge pipe is measured in units of 1; the ratio of the volume is the upper bracket - the mouth, or one style mouth: or the center line of the discharge pipe below the water industry From the distance, the total busyness is m: measure the total tuyere camp or air times at the nozzle end, each time (, say the group, the total amount of "Sichuan·time wind barrier" is measured at the center of the nozzle, the unit is the center line of the nozzle point Two:
The furnace is built high, which refers to the property of connecting the middle line of the closed pipe from the bottom of the ancestral pool to the whole furnace: when the cloth needs to be widely sold, the water from the guard room to the mouth to protect the brand shows the drainage of the heart. High between lines, unit price
Under the supervision of the Ministry of Education, the main branch of the Shenzhen Branch provides new insights, single supervisors focus on W-shaped production and sales, and coordinate consumption management with top management from the perspective of supply and quality. The center line is compared to the median source m: Xiaoda, which is:
The cavity is high, and the single meaning is:
The new chicken uses sub-end type water to reduce the water content in the whole pipe, and the total number is m; the overflow depth, the horizontal clean space at the bottom of the mountain, is: Leng Dongzheng changes the water according to degree, the unit is,
5.2 Calculation formula of main aldehyde thermal properties parameters1. Method for determining the effective narrow range of the furnace cavity
The effective volume of the furnace membrane should be calculated according to the following three principles:: The hidden surface of the furnace exit smoke window of a tangential combustion boiler is generally specified as the rear of the furnace. The flame horn fire is vertical and directed! The imaginary surface formed by turning the tube straight is shown in Figure 1. If the screen or heated space between the fabrics within the above-mentioned false twist (i.e. furnace side) is ≤ 457, the area should be neutralized and removed from the effective volume of aldehydes: for furnace flushing purple boilers and W-type fires For screen-type heating surfaces with a horizontal spacing of >457 mm, the plane generally extends beyond the required direction of the lower end of the folding angle, as shown in Figure 2, Figure? ;, the smoke from the furnace can be moved backward along the water flue to the horizontal distance of 457 m from the heating surface: but it cannot be enough to escape the water mark wall of the back wall (for DW-type boilers, it refers to the back of the upper furnace wall The plane of the water-cooling connection: for the tower boiler, the smoke window is - horizontal. The heating should be horizontal: the water direction of the pipe should be large, and the power between the center lines should be large. 457, as shown in Figure 4.
b) The effective volume of the aldehyde cold furnace area is only half the height. It is considered that the lower level is a dead end and is not included in the effective volume of the furnace.) The protective area is surrounded by the center line of the water-cooled wall tube. The shape of the sense is flat. When the design has a large cutting angle (the small right angle is up to:, several D, for the W-type missing furnace, it is measured as,). As shown in Figure 3, the effective volume of the furnace is said to be according to the cut The actual volume of the character Sohui is calculated
Changed to the real face of Dou 1
Supplement: The mass shown in the photo is protected by a burning dog and is arranged for the Blood Refining Road. It is also used for the Shuanghu Road. Type protection of the temperature measurement of the receiving plate Figure 1 Structural dimensions of the furnace cavity of the tangential combustion boiler Figure 4
Figure 2 Structural dimensions of the furnace cavity of the counter-fired boiler
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Figure 3W Type flame combustion boiler furnace structural size representation National JB10440-2004
JB/T10440-2004
An Guozhong China
1-1 institute m
Note: Figure 8 The tower-type burning mode is divided into several directions. In addition, the furnace furnace structure is shown in Figure 4. The tower-type layout of the furnace has a counter burning zone and a W-shaped burning zone. Dimensional diagram: Symbol
, one by one. , the distance between the three and two centers can be checked coldly. In this paper, the required distance between the loaders is: M unit: Guishui Net, and the unit is: Ten ratio, and the burner is the highest burning code. The central line of the exhaust and Taifeng sprays the coal to the combustion flow rate, and adopts a full-scale hot air differential navigation system, and the three inner wind mouths are connected to each other at the center of the net at one time to provide service. : Discharge ratio: the center line of the discharge pipe under the production volume, the unit is; the quantity is enclosed in the sheet ratio arrangement - the mouth, or a style mouth: or the center line of the discharge pipe below the water industry From the distance, the total busyness is m: measure the total tuyere camp or air times at the nozzle end, each time (, say the group, the total amount of "Sichuan·time wind barrier" is measured at the center of the nozzle, the unit is the center line of the nozzle point Two:
The furnace is made high and clear, which refers to the property of connecting the middle line of the closed pipe from the bottom of the ancestral pool to the whole furnace: when the cloth needs to be widely sold, from the guard room to the mouth to protect the oxygen and the brand water to show the heart. High between lines, unit price
Under the supervision of the Ministry of Education, the main branch of the Shenzhen Branch provides new insights, single supervisors focus on W-shaped production and sales, and coordinate consumption management with top management from the perspective of supply and quality. The center line is compared to the median source m: Xiaoda, which is:
The cavity is high, and the single meaning is:
The new chicken uses sub-end type water to reduce the water content in the whole pipe, and the total number is m; the overflow depth, the horizontal clean space at the bottom of the mountain, is: Leng Dongzheng changes the water according to degree, the unit is,
5.2 Calculation formula of main aldehyde thermal properties parameters
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