GB/T 3486-1993 Technical guidelines for evaluating the rational use of heat in enterprises
Some standard content:
UC 658. 264
National Standard of the People's Republic of China
G/T3486—93
Technical guides for evaluating the rationalitsof heat usage in industrial eoterprisePublished on 19 June 1993
Implemented on 1 February 1994
Published by the State Administration of Technical Supervision
National Standard of the People's Republic of China
Technical guides for evaluating the rationalitsof heat usage in industrial eoterprise 1. Main body and applicable scope
GB/T3486-93
Generation CE3486-·53
This standard specifies the technical management principles for evaluating the reasonable use of heat by enterprises, so as to promote the reasonable and effective use of heat by enterprises and achieve the purpose of energy saving. This standard is applicable to all heat-using enterprises. The heat-using equipment mentioned in this article refers not only to various industrial combustion equipment, heat exchange equipment, desiccant equipment, etc., but also to non-enterprise heat conversion equipment such as production equipment, air conditioning equipment, etc. This standard is not applicable to the transportation and other departments. 2 Reference standards
GB1576 Low temperature insulation water quality standard
CB4272 General code for insulation technology of equipment and components GB1179 General code for insulation technology of equipment and components
GB102B Terminology, classification, grade and calculation method of waste heat resources for industrial waste gas GB13271 Emission standard of air pollutants from decomposing furnaces 3 Rationalization of fuel combustion
3.1 Main control indicators of feed combustion
3.1.1 The main control indicators of feed combustion, including the air system, slag content and other indicators specified according to the combustion equipment, the type of fuel used and different combustion methods. The emission of combustible gases shall meet the requirements of GB13271. 3.1.2 Appendix A Table A1 and Table A2 list the air coefficient ranges for industrial boilers and furnaces when they are operated with different fuels and different combustion methods. In actual operation, the air coefficient should be as low as possible without reducing the fuel combustion efficiency. 3.1.3 For boilers using fire bed combustion, necessary measures should be taken to reduce the slag content in actual operation. The suitable carbon content of slag is listed in Appendix A Table 3.
3.1.4 Evaluate the rationality of the particle combustion device. Under the premise of meeting the process requirements, the indicators specified in 3.1.2 and 3.1.3 should be examined at the same time.
3.1.5 Use reasonable combustion equipment and combustion conditions, and use appropriate combustion aids to prevent various combustion devices from structuring and stopping during operation, and improve the thermal efficiency of the furnace.
3.2 Measurement and Recording of Fuel Combustion
3.2-1 Analyze and record the composition of fuel (including industrial analysis of fuel) and heat generation characteristics as a basis for formulating and adjusting the combustion control system.
3.2.2 In order to understand the combustion conditions of fuel, the combustion device should be equipped with necessary metering instruments to measure and record the fuel, combustion air and chemical composition, temperature and pressure of the combustion device, as well as measure and record the content of carbon dioxide (or carbon dioxide) in the exhaust gas. 3-2.3 Analyze and test the pollutants in the exhaust gas and the exhaust gas to determine the degree of safety and adjust the combustion process. Improve the combustion equipment according to the standard approved by the Technical Supervision Bureau on June 19, 1993 and implemented on January 1, 1994. 3.2.4 The configuration of the fuel gas environment tester should be able to meet the needs of evaluating the reasonable use of heat and be able to measure the actual state of fuel combustion. 3.2.5 Industrial boilers with a capacity of 7MW or more and boilers with a capacity of 1500t standard coal per year or more should be equipped with a combustion process charging system. Those with such equipment should be equipped with a combustion process microcomputer control and detection system. 3.3 Inspection and maintenance of combustion equipment
3.3.1 Inspect and maintain the combustion equipment, safety devices, air supply and exhaust air equipment, combustion control system, pipelines, valves, etc. to keep them in good condition
3.3.2 Regularly register, calibrate and maintain the measuring instruments according to regulations to ensure normal operation. 3.3.3 Combustion equipment should have a regular inspection and maintenance system, clarify the technical requirements for inspection and maintenance, and establish inspection and maintenance record files. 3.1 Measures for improving fuel combustion
3.4.1 The type of combustion equipment and its operating parameters must be suitable for the type of fuel and its physical and chemical properties, suitable for the requirements of equipment and process, and have sufficient adjustable range to meet the requirements of thermal load changes. 3.4.2 The air supply and exhaust air system must ensure the necessary air flow and pressure. The capacity of the air supply and exhaust air system must match the combustion system and equipment. The margin should not be too large, and a variable speed adjustment system should be used as much as possible. 3.4.3 Install combustion control devices. The ratio of gas to fuel should be adjusted according to the oxygen content (or carbon trioxide content) in the exhaust flue gas to meet the requirements of air coefficient management, so that the combustible components in the exhaust flue gas are reduced to a low level. 3.4.4 When using auxiliary combustion devices, the proportion of fuel supplied to each group and each combustion device should be adjusted and controlled in groups (sections) or individually to improve the overall thermal efficiency of the thermal equipment.
3.4.5 When adopting new combustion methods, combustion and distribution methods, the appropriate type of fuel should be used to further improve the thermal efficiency.
3.4. The types of fuel particles used in the combustion equipment should be compatible with each other and keep the quality relatively stable. The materials should be reasonably allocated, added (power coal and type coal) and stored reasonably, and the comprehensive use of fuel, fuel, etc. should be promoted. 3.4.7 When the right requirements are strict and cannot be adjusted, chemical agents can be used for removal. The chemical removal agents should not damage the fire-receiving components.
4 Rationalization of heat
4.1: Requirements for heat transfer management
4.1.1 The temperature of the heated or cooled material, the temperature of the steam or other heat medium used for heating , pressure and flow rate. Reasonable control indicators and related management requirements should be formulated according to process requirements and energy-saving principles. 4.2 For each of the main heat-using equipment in the enterprise, a thermal efficiency or unit output heat consumption quota industry standard should be formulated as a basis for evaluating the rational use of heat-using equipment.
4.1.3 For heating, cooling and air conditioning equipment such as factory buildings, corresponding temperature and ventilation and cooling management requirements should be formulated according to the structure of the building, the configuration of the equipment, and the process characteristics of the operation. 4.2 Heat transfer related parameters and records
4.2.1 Measure and record the temperature, pressure and flow rate of the heated or cooled objects and the thermal insulation, as well as other parameters that characterize the thermal status of the equipment.
4.2.2 For factories with requirements for heating, cooling and air conditioning, the millimeter intake should be measured and recorded. Temperature, humidity and necessary parameters of its energy-consuming working fluid or the amount of heat dissipation
4.3 Inspection and maintenance of heat transfer equipment
4.3.1 Inspect and maintain the heat transfer equipment and its accessories to keep them in good condition. 4.3.2 Remove the deposited scale, scale and other accessories in the heat transfer equipment to maintain its good heat transfer performance. 4.3.3 Remove the blockages in the filter of the gas conditioning equipment, the knots in the heat exchanger, the water in the cooler, etc. to keep the equipment in good working order.
CB/T348693
4.3.4 The water supply water for industrial boilers, cooling components, etc. should be managed in accordance with GB15. The water quality of power station boilers and other medium and high pressure boilers should be managed in accordance with the technical management regulations of the electric power industry. 4.35 Regularly inspect, calibrate and maintain the equipment And only support, make it operate normally, establish the maintenance record file of the instrument, and clarify the technical requirements.
4.4 Measures to improve heat transfer
4.4.1 According to the possibility of the process, reasonably formulate the specified value of the heating (cooling) temperature to reduce the overall energy consumption. 4.4.2 According to the provisions of the process conditions, accurately control the temperature of the heated or cooled object, and do not exceed the specified temperature range. 4.4.3 For equipment using steam and other heat-carrying materials, accurately control the temperature, strength and flow of the heat carrier to reduce the loss of heat. 4.4.4 For heating equipment with stable temperature and continuous operation, the heat supply plate at each point should be controlled to ensure that the heated object is heated according to the specified temperature system. In order to further improve the thermal efficiency, the temperature system should be improved and the heat supply at each point should be reasonably distributed. 4.4.5 For heating equipment with periodic operation, the heating supply should be controlled according to the specified heating system for each operation stage. In order to improve the heating efficiency, a more reasonable heating system should be studied.
4.4.6. Wherever possible, direct (open flame heating, no combustion) heating methods should be used as much as possible to increase the heating speed and reduce fuel consumption. New direct heating combustion methods and equipment should be studied to further maintain the unique application of indirect heating. For technologies that cannot be heated directly, the effect of indirect heating should also be improved. 4.4. The exhaust system of the gas heating equipment should have appropriate suction. When two equipments share the same exhaust system, each equipment should have a separate control valve. The whole gas system should have good airtightness to ensure the control capacity of the positive force distribution in the equipment. 4.4.8 Improve the performance and shape of the entire surface of the general industrial furnace to improve its radiation convection heat transfer capacity. 4.4.9 Improve the performance and shape of the heat exchange part of the heating equipment to improve its heat transfer capacity. 4.4. 10 Improve the main body, stand, and trolley and chain claw for transporting heated objects of the heating equipment, and adopt appropriate structures to reduce their weight, and use materials with small specific heat and thermal conductivity to reduce the heat and heat loss of the equipment, and improve the heating speed and combustion efficiency. 4.4.11 Increase the number of efficiency tanks, extend the length of the furnace, add and manage heat exchange devices, and use high-temperature and low-temperature heat efficiency equipment in combination to utilize heat multiple times and improve the overall efficiency of the system. 4.5 Improve the operation management of heating equipment
4.5.1 Adjust the number of objects to be heated or cooled so that each equipment is close to the rated output, to prevent the output from being too low or too high and increase the efficiency
4.52 When multiple equipment are operated in parallel: the equipment should be based on the single output For heating equipment with low heat output, adjust the number of units in operation and the load. 4.53 For heating equipment that works cyclically in continuous production, or for equipment that heats the same heated object, the peak time between two heating cycles should be shortened as much as possible. In the process of repeated heating, the waiting time between processes should be shortened. 4.5.4 For heating equipment that operates intermittently, it should be operated in a continuous process. 4.5.5 Where permitted by the above technology, heat transfer technology for the heated object should be adopted, and the heating temperature should be increased as much as possible. 4.5.6 For equipment with too low thermal efficiency or too high thermal index, the structure should be improved, the equipment should be adjusted when necessary, and the efficiency should be updated. For the products of relevant state departments and the waste products, they should be eliminated within the prescribed time limit. For equipment A, the minimum thermal efficiency indicators of industrial steel furnaces are listed in Table 4. .6 Use high-efficiency equipment and energy-saving process 4.6.1 When renovating or building new heat equipment: must use the type of structure, construction materials and operating system that can improve the thermal efficiency of the equipment. 4.6.2 According to the conditions of the room, adopt the energy-saving process. 5 Reduce heat loss caused by heat transfer and leakage
5.1 Management requirements for reducing heat loss
5.1.1 The insulation and cooling standards of the pipes, devices and heat transfer equipment for transporting heat carriers shall be in accordance with the relevant provisions of GB4272.CH11790.
5.1.2 When the ambient temperature is 25, the temperature of the outer surface of the industrial furnace shall not exceed 0℃ 5.1.3 The smoke temperature of the industrial furnace shall meet the requirements of Appendix A Table A4. 3
CB/T 34B6--53
5.1.4 Appendix A Table A6 lists the external surface temperature indexes of various industrial furnaces, which are used as the basis for evaluating the heat loss performance of the furnace when designing, building and repairing industrial furnaces. 5.2 Measurement and Recording of Heat Loss
For the design of heat-related equipment, the heat loss status shall be measured and analyzed regularly. In the case of effective conditions, it can be combined with the thermal semi-measurement and analysis of the equipment. 5.3 Inspection and Maintenance of Heat Equipment
5-3-1 Regularly inspect and maintain the heat equipment and its accessories and insulation and refrigeration structures to avoid the loss of heat and the increase of heat loss caused by the failure of equipment and insulation and deep refrigeration structures. 5.3.2 Check and repair the furnace body and holes to ensure its airtightness and reduce the escape of furnace gas or the entry of cold air. 5-3.3 Check and repair the steam drain and thermal network quickly and quietly to ensure that the steam bed water is clear and the thermal network does not have obvious steam leakage. 5.3.4 Confirm the technical requirements for inspection and repair, and establish inspection and maintenance files. 5-4 Reduce the heat loss caused by large-scale heating
5.4.1 The heat equipment (external research). Including the furnace bottom, furnace top, furnace door, etc., should have a complete and effective insulation layer. Under the condition of reasonable technical and economic conditions, the thickness of the insulation layer should be appropriately increased, and multi-layer insulation should be used. Refractory fiber and other new insulation materials should be used to improve the insulation performance of the heating equipment and reduce the number of work plans. 5.4-? Minimize the number and size of components in industrial furnaces. All cooling components in the furnace should be insulated as needed. When possible, appropriately increase the outlet temperature of cooling water and reduce the flow rate to reduce the heat loss caused by cold return. 5.4.3 Reduce the number of holes and panels such as furnace doors to improve the tightness rate. Or use double-sealed doors to reduce the number of door openings, time and intervals to reduce the heat loss caused by radiation and initial gas outflow or cold air intake. 5.4.4 The ends of the panels must have good airtightness and should be located as close as possible to reduce the heat loss caused by gas leakage or cold air intake. 5.4.5 Control the pressure in the furnace to reduce the heat loss caused by gas leakage or cold air intake. 5.4.6 The connection and load-bearing part of the heat equipment should be sealed to prevent the heat carrier from being damaged. 5.4.7 The heat dissipation circuit of the combustion medium shall be suitable for the heat dissipation surface. The pipeline for conveying the heat medium shall be protected and shall not be compressed. 5.4.8 Equipment for conveying high-temperature objects shall adopt the device of using the generated water to store the heat. The heat shall be accumulated to reduce the loss. 6 Recovery and Utilization of Waste Heat 6-1 Requirements for Residual Heat Recovery 6.1.1 For each heat discharge device for exhausting flue gas, specific requirements for recovery and utilization shall be formulated. Table A7 is the control measures for the recovery of waste heat from industrial furnace flue gas. 6.1.2 For the discharge of condensed water and other overflowing materials, the requirements for recovery and utilization shall be determined in response to the source of new materials, period, situation, etc.
6.1.3 For heat equipment that discharges liquid, solid, and high-temperature objects and wastes, the requirements for the quantity and quantity of waste heat that must be recovered and utilized shall be formulated.
6.1.4 For heat equipment that discharges solid, gaseous wastes with combustible components, the requirements for recovery and utilization shall be formulated. 6.1.5 For heat equipment that discharges gases and micro-particles with residual pressure, the requirements for recovery and utilization shall be formulated. 6.1.6 For the sensible heat (physical heat) of high-temperature products, it shall be recovered and utilized as much as possible. 6-2 Setting up waste heat recovery equipment
6.2.1 According to the type of waste heat, discharge conditions, medium quality, quantity and utilization possibility, a comprehensive thermal efficiency and economic feasibility analysis shall be conducted to determine the type and size of waste heat recovery equipment, which shall comply with the relevant requirements of GB1028. 6.2.2 Waste heat recovery should be used in vehicle preparation systems in priority, such as preheating combustion air and preheating objects, etc., to improve the thermal efficiency of the equipment, reduce fuel consumption, and
6.2.3 When waste heat and waste energy cannot be recovered and used to heat the equipment itself, or when part of it can still be recovered after use, it can be used to produce steam or hot water, generate power, or be used as heat for heating equipment, or be used in a comprehensive manner. 6.3 Measurement and Recording of Waste Heat
6.3.1 According to the intensity and quantity of waste heat, the composition of combustible materials (effective heat generation and number), and the force and flow of waste energy carriers, etc., relevant measurements and records should be made. 6.3.2 The operating parameters of waste heat and waste energy recovery equipment should be measured and recorded. 6.4 Inspection and Maintenance of Waste Heat Recovery Equipment
6-4.1 Check the heat exchangers, waste heat boilers, heat decay equipment and other equipment that recycle waste heat and waste energy, remove the accumulated droplets on the exchange surface, repair the parts of the heat carrier, update the wasted objects, etc., keep the equipment in good condition and run normally, and establish an inspection and maintenance record model. 6.4.2 Regularly check, calibrate and maintain the metering and testing instruments to ensure normal operation. 6.5 Improvement and Evaluation of Waste Heat Recovery Measures
6.5.1 Output The smoke transmission and ventilation channels of waste heat recovery equipment and their smell lines should be kept as dense as possible to prevent the inhalation of cold air and avoid people. The thermal insulation performance should be improved to reduce the temperature drop and heat loss of the heat recovery equipment. 6.5.2 Improve the heat transfer performance and shape of the waste heat recovery equipment and increase its surface area to improve the recovery of waste heat. B.5.3 Research and develop high-efficiency waste heat recovery fuels with high net volume and high preheating or steam generation pressure, low consumption of heat-resistant metal, small footprint, low leakage rate, and waste heat recovery devices that can convert low-grade thermal energy into high-grade thermal energy or electrical energy, so as to realize the reasonable configuration of heat utilization and energy-consuming equipment. 7.1 Enterprises with related equipment should implement heat recovery and power supply or heat and power generation. 7.2 When configuring the heat utilization system, special consideration should be given to the necessary reduction points and multiple utilization, such as multi-effect natural gas systems. 7.3. In order to obtain a balanced production environment, a heat generator can be used to achieve a reasonable match between the heat source and the heat-using equipment.
7.4 In some production processes, intermittent heating and repeated heating are not recommended. 7.5 The benefits and recommendations of the micro-reputation are to further reduce the heat and risk of the system. Combustion mode
Fire air combustion
Fire point combustion
Developed by 2. BMW
Fire bed combustion
70--160
CB/T3486-93
Appendix A
(supplement)
Boiler air coefficient
Air coefficient at the outlet of the boiler
Feeder
1. 2~ 1. 25
1. 1--1. 5
Method: () Heat with non-radiant fire to start the effect can not love to limit the effect: to not apply the following full furnace,
strict medium
B, evaporation of the whole small c.ltMW or core heat load small c-sx1ckh of hot water pot section, more than five war furnace
. Use night light, dry sea, large screen, garbage or other industrial heating fuels with a combined burning ratio of vehicle protection, annual operation does not exceed 1 inch of vehicle,
sticky solution
gas burning
industrial furnace air coefficient
chemical coal
artificial coal cutting
too much engineering adjustment
dynamic network section
artificial T section
self-adjustment
industrial sea section
mass coupling adjustment
smoke exhaust air coefficient
solid energy
air coefficient
1. 2--1. 4
1. 3- 1. 5
1. 1 ~1- 2h
1- 15 ~ 1 25
1- 1-~-J. 2
1- 83-~ 1. 16
Jiang: The air elements listed in the previous section are collected and prepared after final inspection. In the environment close to a certain point load storage, the allowable air system efficiency at the equipment outlet is: set
heat 0.351:
h. In order to make the exhaust gas balanced, the exhaust gas released by the air must be discharged. The value in the engraved area is the exhaust gas volume·MW
2n.35~0. 7
CD/T3486-93
clothes A3 industrial boiler mixing with light
properties: The value in the engraved area is the exhaust gas volume of the industrial furnace at the beginning of the fire bed combustion. The exhaust gas volume of the industrial furnace is discharged ... Table A4 Industrial full furnace exhaust temperature
disease protection capacity
>2 7~2. E
exhaust period diameter
conditions: the provisions listed in the provisions are for periodic inspection of the running exhaustion protection, the vehicle start temperature is 25 heart full wind waiting under the condition of combustion regulations, the cost value
measured at the corresponding protection port for hot water disease planning with a capacity of more than 0.7MW, especially the exhaust short change is allowed to have a value width C in the table, this forget is not suitable for the following:
, the actual capacity is less than 14M, or the frequency constant cell is still less than .5×1m*kJ small hot water disease boiler, b. Natural gas furnace
c, use of light, mainstream, wood or other industrial fuel hungry burning protection, d. The annual average operation time is not more than 1cxh, the night A5 industrial snail protection volume is low thermal efficiency zone
2s.35~.7
>±.7-~2. 8
GB/T3485-93
Suitable table A5
Note: The actual operation of the furnace is listed in the agricultural, and the smoke diameter needs to be cut to verify the position. The technology is not used for protection, and the light smoke rack is used. The actual coal is attached! The front end of the coal is less than c.1MW. The heat reduction is less than 5×10kJ of hot water snail. Yongpei aluminum
. With the elimination of light, the lower the construction, the technology or the other two industries and the tower material standard dangerous light protection. Table A6 Industrial protection body surface and exhibits high efficiency spray ban
foreign sales total high tax rate
protection internal alliance degree
when: I position in the environment you see the device for 25 when the normal two pieces of the surface of the ten can benefit the special part of the blood edge, the sequence of this table is not used for the following two industries protection: fixed heat
15 protection supervision mandatory Ling in.
. Rotational security.
was A second industry furnace comfortable flue gas help connect porcelain source country collection lake
When using low combustion fuel
Dongyuan return
yield, % bZxz.net
26~-46
exhaust sight
Chong frequency adjustment
country collection. In total
make high heating energy data must be attached
gland sleep,
note, low combustion material refers to blast furnace gas, expansion gas, conversion coal and calorific value of small calf 36/m! The waste heat recovery rate in the table is 8
GB/T3486-93
, and the waste heat recovery rate in the table is 10%. According to the gas output degree and the existing total demand, the economic efficiency of air conditioning is selected, and the ratio of the heat gained by the air to the loss of the flue gas entering the heat exchanger is calculated. Then the flue gas outlet temperature is calculated according to the heat balance. Due to the different heat levels of the materials, the items are large, so the calculated value of the fuel structure is high, the cost is two periods, and the average supply period is taken. The waste heat recovery rate in the table can be installed according to the actual conditions. The waste heat boiler, heat transfer device or heat receiving device can be installed to receive the steam being added, and the cost can be recovered step by step. This table is not applicable to the following whole furnace density,
r. Rated heat unit For those with lower than 5x1%k,h,
h. For those with the same operation style,
as the cost consideration of flue gas efficiency (i.e., the state gas high opening heat exchanger has a flow rate of free air and natural air disconnection, which is calculated by the waste heat recovery rate according to the following conditions, 2 furnace brain building months, the flue gas, in the furnace level out! The air is quickly discharged between the gas and the air intake, etc., and the heat loss is reduced by 10%b. The air coefficient is 1.2,
c. The outside temperature is 20
Additional notes:
This standard was proposed by the National Energy Basics and Management Standardization Technical Committee and is under the jurisdiction of the Energy Flow Equipment and Rational Heat Use Branch. This standard was drafted by China Standardization Institute, National Planning Commission Energy Institute, and Shanghai Power Equipment Complete Set Institute. The main drafters of this standard are Xin Dingguo, Li Aican, Nian Yingxin, Qian Shuntai, and Jin Kai.16
Jiang: The air elements listed in the above are collected and prepared after final inspection. In the environment close to a certain point load storage, the allowable air system efficiency at the equipment outlet is: set
heat 0.351:
h. In order to make the exhaust gas balanced, the exhaust gas released by the air must be discharged. The value in the engraved area is the exhaust gas volume·MW
2n.35~0. 7
CD/T3486-93
clothes A3 industrial boiler mixing with light
properties: The value in the engraved area is the exhaust gas volume of the industrial furnace at the beginning of the fire bed combustion. The exhaust gas volume of the industrial furnace is discharged ... Table A4 Industrial full furnace exhaust temperature
disease protection capacity
>2 7~2. E
exhaust period diameter
conditions: the provisions listed in the provisions are for periodic inspection of the running exhaustion protection, the vehicle start temperature is 25 heart full wind waiting under the condition of combustion regulations, the cost value
measured at the corresponding protection port for hot water disease planning with a capacity of more than 0.7MW, especially the exhaust short change is allowed to have a value width C in the table, this forget is not suitable for the following:
, the actual capacity is less than 14M, or the frequency constant cell is still less than .5×1m*kJ small hot water disease boiler, b. Natural gas furnace
c, use of light, mainstream, wood or other industrial fuel hungry burning protection, d. The annual average operation time is not more than 1cxh, the night A5 industrial snail protection volume is low thermal efficiency zone
2s.35~.7
>±.7-~2. 8
GB/T3485-93
Suitable table A5
Note: The actual operation of the furnace is listed in the agricultural, and the smoke diameter needs to be cut to verify the position. The technology is not used for protection, and the light smoke rack is used. The actual coal is attached! The front end of the coal is less than c.1MW. The heat reduction is less than 5×10kJ of hot water snail. Yongpei aluminum
. With the elimination of light, the lower the construction, the technology or the other two industries and the tower material standard dangerous light protection. Table A6 Industrial protection body surface and exhibits high efficiency spray ban
foreign sales total high tax rate
protection internal alliance degree
when: I position in the environment you see the device for 25 when the normal two pieces of the surface of the ten can benefit the special part of the blood edge, the sequence of this table is not used for the following two industries protection: fixed heat
15 protection supervision mandatory Ling in.
. Rotational security.
was A second industry furnace comfortable flue gas help connect porcelain source country collection lake
When using low combustion fuel
Dongyuan return
yield, %
26~-46
exhaust sight
Chong frequency adjustment
country collection. In total
make high heating energy data must be attached
gland sleep,
note, low combustion material refers to blast furnace gas, expansion gas, conversion coal and calorific value of small calf 36/m! The waste heat recovery rate in the table is 8
GB/T3486-93
, and the waste heat recovery rate in the table is 10%. According to the gas output degree and the existing total demand, the economic efficiency of air conditioning is selected, and the ratio of the heat gained by the air to the loss of the flue gas entering the heat exchanger is calculated. Then the flue gas outlet temperature is calculated according to the heat balance. Due to the different heat levels of the materials, the items are large, so the calculated value of the fuel structure is high, the cost is two periods, and the average supply period is taken. The waste heat recovery rate in the table can be installed according to the actual conditions. The waste heat boiler, heat transfer device or heat receiving device can be installed to receive the steam being added, and the cost can be recovered step by step. This table is not applicable to the following whole furnace density,
r. Rated heat unit For those with lower than 5x1%k,h,
h. For those with the same operation style,
as the cost consideration of flue gas efficiency (i.e., the state gas high opening heat exchanger has a flow rate of free air and natural air disconnection, which is calculated by the waste heat recovery rate according to the following conditions, 2 furnace brain building months, the flue gas, in the furnace level out! The air is quickly discharged between the gas and the air intake, etc., and the heat loss is reduced by 10%b. The air coefficient is 1.2,
c. The outside temperature is 20
Additional notes:
This standard was proposed by the National Energy Basics and Management Standardization Technical Committee and is under the jurisdiction of the Energy Flow Equipment and Rational Heat Use Branch. This standard was drafted by China Standardization Institute, National Planning Commission Energy Institute, and Shanghai Power Equipment Complete Set Institute. The main drafters of this standard are Xin Dingguo, Li Aican, Nian Yingxin, Qian Shuntai, and Jin Kai.16
Jiang: The air elements listed in the above are collected and prepared after final inspection. In the environment close to a certain point load storage, the allowable air system efficiency at the equipment outlet is: set
heat 0.351:
h. In order to make the exhaust gas balanced, the exhaust gas released by the air must be discharged. The value in the engraved area is the exhaust gas volume·MW
2n.35~0. 7
CD/T3486-93
clothes A3 industrial boiler mixing with light
properties: The value in the engraved area is the exhaust gas volume of the industrial furnace at the beginning of the fire bed combustion. The exhaust gas volume of the industrial furnace is discharged ... Table A4 Industrial full furnace exhaust temperature
disease protection capacity
>2 7~2. E
exhaust period diameter
conditions: the provisions listed in the provisions are for periodic inspection of the running exhaustion protection, the vehicle start temperature is 25 centigrade full wind waiting under the condition of combustion regulations, the cost value measured at the corresponding protection port
zero purchase for the hot water disease plan with a capacity of more than 0.7MW, especially the exhaust short change is allowed to have a value width C in the table, this forget is not suitable for the following:
, the actual capacity is less than 14M, or the frequency constant cell is still less than .5×1m*kJ small hot water disease boiler, b. Natural gas furnace
c, use of light, mainstream, wood or other industrial fuel hungry burning protection, d. The annual average operation time is not more than 1cxh, the night A5 industrial snail protection volume is low thermal efficiency zone
2s.35~.7
>±.7-~2. 8
GB/T3485-93
Suitable table A5
Note: The actual operation of the furnace is listed in the agricultural, and the smoke diameter needs to be cut to verify the position. The technology is not used for protection, and the light smoke rack is used. The actual coal is attached! The front end of the coal is less than c.1MW. The heat reduction is less than 5×10kJ of hot water snail. Yongpei aluminum
. With the elimination of light, the lower the construction, the technology or the other two industries and the tower material standard dangerous light protection. Table A6 Industrial protection body surface and exhibits high efficiency spray ban
foreign sales total high tax rate
protection internal alliance degree
when: I position in the environment you see the device for 25 when the normal two pieces of the surface of the ten can benefit the special part of the blood edge, the sequence of this table is not used for the following two industries protection: fixed heat
15 protection supervision mandatory Ling in.
. Rotational security.
was A second industry furnace comfortable flue gas help connect porcelain source country collection lake
When using low combustion fuel
Dongyuan return
yield, %
26~-46
exhaust sight
Chong frequency adjustment
country collection. In total
make high heating energy data must be attached
gland sleep,
note, low combustion material refers to blast furnace gas, expansion gas, conversion coal and calorific value of small calf 36/m! The waste heat recovery rate in the table is 8
GB/T3486-93
, and the waste heat recovery rate in the table is 10%. According to the gas output degree and the existing total demand, the economic efficiency of air conditioning is selected, and the ratio of the heat gained by the air to the loss of the flue gas entering the heat exchanger is calculated. Then the flue gas outlet temperature is calculated according to the heat balance. Due to the different heat levels of the materials, the items are large, so the calculated value of the fuel structure is high, the cost is two periods, and the average supply period is taken. The waste heat recovery rate in the table can be installed according to the actual conditions. The waste heat boiler, heat transfer device or heat receiving device can be installed to receive the steam being added, and the cost can be recovered step by step. This table is not applicable to the following whole furnace density,
r. Rated heat unit For those with lower than 5x1%k,h,
h. For those with the same operation style,
as the cost consideration of flue gas efficiency (i.e., the state gas high opening heat exchanger has a flow rate of free air and natural air disconnection, which is calculated by the waste heat recovery rate according to the following conditions, 2 furnace brain building months, the flue gas, in the furnace level out! The air is quickly discharged between the gas and the air intake, etc., and the heat loss is reduced by 10%b. The air coefficient is 1.2,
c. The outside temperature is 20
Additional notes:
This standard was proposed by the National Energy Basics and Management Standardization Technical Committee and is under the jurisdiction of the Energy Flow Equipment and Rational Heat Use Branch. This standard was drafted by China Standardization Institute, National Planning Commission Energy Institute, and Shanghai Power Equipment Complete Set Institute. The main drafters of this standard are Xin Dingguo, Li Aican, Nian Yingxin, Qian Shuntai, and Jin Kai.For operators of the same type, the flue gas efficiency (i.e. the flue gas heat exchanger opening temperature and the natural air temperature) shall be taken as the consideration. The flue gas of the furnace head building shall be calculated according to the following conditions by the waste heat recovery rate. The flue gas discharged from the furnace by the gas exchanger shall cause the air to be quickly discharged. The heat loss caused by the intake air shall be less than 10% b. The air coefficient is 1.2, c. The external temperature is 20. Additional notes: This standard was proposed by the National Energy Basics and Management Standardization Technical Committee and is under the jurisdiction of the Energy Flow Equipment and Rational Heat Use Branch. This standard was drafted by the China Standardization Institute, the National Development and Reform Commission Energy Institute, and the Shanghai Power Equipment Complete Set Institute. The main drafters of this standard are Xin Dingguo, Li Aican, Nian Yingxin, Qian Shuntai, and Jin Kai.For operators of the same type, the flue gas efficiency (i.e. the flue gas heat exchanger opening temperature and the natural air temperature) shall be taken as the consideration. The flue gas of the furnace head building shall be calculated according to the following conditions by the waste heat recovery rate. The flue gas discharged from the furnace by the gas exchanger shall cause the air to be quickly discharged. The heat loss caused by the intake air shall be less than 10% b. The air coefficient is 1.2, c. The external temperature is 20. Additional notes: This standard was proposed by the National Energy Basics and Management Standardization Technical Committee and is under the jurisdiction of the Energy Flow Equipment and Rational Heat Use Branch. This standard was drafted by the China Standardization Institute, the National Development and Reform Commission Energy Institute, and the Shanghai Power Equipment Complete Set Institute. The main drafters of this standard are Xin Dingguo, Li Aican, Nian Yingxin, Qian Shuntai, and Jin Kai.
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