GB/T 15187-1994 Method for determining the performance of wet dust collectors
Some standard content:
11nC. 621. 926. 9 : 620. 16
National Standard of the People's Republic of China
GB/T 15187 94
Measuring method for performance of wet dust collectors
Issued on August 29, 1994
Implemented on July 1, 1995
Issued by State Technical Supervision Bureau
National Standard of the People's Republic of China
Measurlngmethod forperformanceun of wet dust cullecturs1生男Content and Scope of Application
This standard defines the test and calculation methods for the performance of wet dust collectors. GB/T15187---54
This standard is applicable to the performance determination of condensing dust collectors in the operation of the dust removal system and the performance determination of new products in the research and development: This standard is not applicable to the performance determination of wet dust collectors with flue gas as the main purpose 2 Reference standards
GHS748 Determination of dust in workplace air GB12.35 Test method for bag dust collector leaf energy 3 Terminology
Explicit dust removal Equipment that uses liquid (usually water) to capture dust-containing gas in order to achieve the purpose of purifying the gas, and the absorption agent can absorb the gas source and reduce the state of the material 4 Wet dust removal performance parameters
Dust removal rate (special electrical efficiency standard):
Resistance pressure drop)
Pufeng kettle;
d. Water consumption or.
5 Measurement items and requirements for wet dust collectors
5.1 The measurement environment for wet dust collectors can be:
The static pressure and dynamic pressure of the gas in the pipeline, the total pressure of the gas in the pipeline;
The humidity of the gas in the pipeline;
The flow rate of the gas in the pipeline, the dust concentration of the gas in the pipeline;
f. The maximum water consumption
5.2 Measurement requirements for wet dust collectors
5.2.1 The pressure, dynamic pressure, flow rate, sparseness and dust content of the gas in the wet dust collector should be measured daily, and the inlet and outlet pipelines should be measured at the same time.
5.2.2 During the measurement, the operating conditions of the wet dust collector should meet the design requirements, and the operating conditions of the production pipeline should be studied. 5.2.3 The 325-degree belt is used for the machine test, and the median diameter d.5C is B~12mm. The emission should be continuous and uniform. The dust concentration can be selected in the range of 1~20g/m. State Administration of Technology Supervision, approved on August 29, 1994, CRT 15167-94 on July 1, 1995. The performance parameters of the prototype shall be determined under the rated wind speed or dust concentration of the design. 6.1 The position of the diffuse hole must be as close as possible to the pipe. The measuring point should be hung on the straight pipe section, at a distance of not less than 10 times the pipe straight diameter (when the sealing true diameter) from the upstream head, the first pass, the actual change pipe, etc., and not less than 10 times the diameter (equivalent diameter) from the downstream actual pass, the first pass, the change pipe, etc. If the above requirements cannot be met, the number of measuring points should be increased. 6.2 The measuring points should be set in rings of equal area in the pipeline. The number of rings for different diameters is shown in Table 1. Table "Number of rings for different diameters" c
The points are arranged on the actual diameters of the two lines passing through the center and coincide with each other (see Figure 1, the points are located on the geometric center of each ring, and the distance from the inner wall of the smoke pipe is shown in Table 2.
The coefficient of distance between the measuring point and the inner wall of the pipe is
0. 0673.115
tt,xo6
u, 658
G.933 1 3.975
When the position of the measuring points cannot meet the requirements of 1 meter, 1 (4 measuring points) should be added if the pipe diameter is less than or equal to 1 meter, and 1 more measuring points should be added if the pipe diameter is greater than 1 meter.
6.3 The effective pipeline should be divided into several equal-area shapes. Each point has the center of a small rectangle. The number of points is shown in Table 3. Selection of standard points
Surface handle
Each point
GB15187-54
The small rectangle should be as close to a square as possible. The minimum length is 5 meters. See Figure 2. When the full point position can meet the requirements of 6.1, the number of measuring points shall not be less than 9. 6.4 The static pressure load of the prototype test hole structure is shown in Figure 3. The axis of the hole should be perpendicular to the wall. The periphery is smooth and hair-free, and there is only air leakage in contact with the pipe wall. Figure 3
1-Reduction static camera 2-Pipeline
6-5 The necessary layout of the dust removal system on the pipeline is shown in Figure 1. Figure
-General reference--commercial-some
7 degrees is
7.1 The location and number of measuring points shall be in accordance with the provisions of 6.1~5.3. Take the arithmetic mean of each point. Under the condition that the temperature field is relatively uniform (the temperature drop is less than the center point, the center point can be appropriately reduced). 7.2 The screening degree of the temperature measuring instrument shall not be less than 1 level.
B Humidity measurement
: 8.1 The measuring point is selected at the center of the sampling pipeline. The suction leakage method, cold distance method and humidity method can be used. The flow meter is operated by the ten-type cumulative method. 3
GB/T 151B7—94
8.2 The desiccant method uses a moist or two-stage desiccant tube. The sampling device is shown in Figure 5. The desiccant should be a small particle material (such as anhydrous calcium sulfate) that only absorbs water vapor but not other gases. If a powdered desiccant is used, it should be mixed with a small piece of floating material before being loaded into the tube to reduce resistance. The desiccant tube is made of hard glass. After the desiccant is loaded, it should be filled with a small amount of glass wool to prevent the desiccant from being sensitive. The amount of desiccant in the card-level desiccant tube should be no less than 30g, and the gas flow through the desiccant tube should be 31./mi. The gas holding time should be no less than 10min. The tube should be sealed before and after the gas is pumped to avoid errors caused by full gas. The weight gain of the collected tube should not be greater than 0.155, and the scale of the weighing desiccant tube should not be greater than 10mg. Figure S
1-through 2-meter to 13-reducing casing 11-piece certificate: 5 replacement 6-F drying year: 7-temperature air meter: +2 output table: 6-cumulative meter, 10-rotor discharge meter: 31-fan gas to gas source content according to formula (1) calculation:
K(N,-N,),273B+E×10
Where: G....-gas moisture content year·R/m standard , 1000?Qu—the first stage moisture absorption full weight gain g
-the initial value of the flowmeter, ".1
N-the final positive reading of the flowmeter.
The pressure value of the meter P
before the flowmeter, C,
b. The local atmospheric pressure at that time, P..
K--the cumulative flowmeter correction coefficient,
273-1101 325
The volume fraction of water vapor in the body under the standard state is calculated according to formula (2): 1.24
K(N,-N)
1:2325
Formula: X. Under standard conditions, the volume percentage of water in the gas. X%
3 For high temperature and high pressure gas, the cold instantaneous method can be used to measure the source, and the sampling device is as shown in box 6. The condenser must not leak, and there must be no water on the supply structure. Fill the air intake with water, then open the condensate drain switch, and cool the water again: the total condensate volume of the gas or the channel should be -F30g. The measurement accuracy should be above 0.5g. , the cooling water resistance shall not be higher than 15, the suction volume of the cold pull moisture measurement should be filled with 12~.201./rnin.
GB/T15137-94
Zhidao, 2-effective sample head: rough set 14 cold rise 15-dryer, 6-disc meter, 7-blood output table S-· system volume flow 19-rotor flowmeter: 1-heart-extraction tea gas moisture content push type (3) calculation:
Q.+C.8Kb(N,-N,)
101325
K(M- N,)
273+t101325
The required correction factor is generally taken as 1, 0; 2. The water base of the cold precipitation is 8:
--the test and water vapor corresponding to the overflow. The ground and water pressure when not in use are shown in Appendix A (Supplement). The volume of water vapor in the standard state of gas is calculated according to formula (4): 1.24Q.+K8(N,-N)
373+1325
1.242,+K(N,-N,3
773+1018251
8.4 For the temperature below 60℃, the R is about 935% and the humidity meter with display element can be used. The basic error of the hygrometer should be less than 3%RH. When using the hygrometer,The temperature should be stopped at the measuring point and dropped above 305. The relative humidity displayed is calculated according to formula (5): RH
- relative humidity displayed at night.
Water content in gas is measured by micrometer (guide: O.&PRH
-R-PRA
9 Determination of static pressure, dynamic pressure and total pressure of gas in pipeline 9.1 The pressure measuring instruments are pitot tube, micrometer and anaglyph pressure gauge. (5)
9.2 Static pressure measurement shall be carried out by multi-point measurement. The measurement point layout shall comply with the provisions of 6.1 to 6.3. The arithmetic average of each point shall be taken as the static pressure value of the section. If the value fluctuation of each point is within ±30a, the number of measurement points may be appropriate or reduced. 9.3 Dynamic pressure measurement shall be carried out by pitot tube measurement method. The measurement points shall comply with the provisions of 6.1-6.3. Each point shall be measured 3 times. The average value of the square root of the square root shall be taken as the dynamic pressure value of each point. When measuring the dynamic pressure value, the arithmetic average of each point shall be taken as the static pressure value of the section. The direction of the airflow, the deviation shall not be greater than 5 or the average value of the square limit after the formula (>) let the first --Ve
GH/T15187-94
In the formula, P, PP, the flue gas dynamic pressure at each point.Pa milk cross-sectional internal energy potential.
10 Determination of gas flow rate in the pipeline 10.1 The total internal gas flow is calculated by dynamic calendar value, and its calculation formula is as follows: fap
Formula +: v.
Gas system velocity at two points.n/N
C,—Pitot correction coefficient;
β—Density of the gas companion, kk/m
10.1.1 The gas density under standard conditions is calculated according to formula (0): [MX, IMX,+.... MX-X.) IIRX.
Where:
density of wet gas in thin state, g/(standard); molecular weight of each gas component in the gas: X, X, X, volume of each gas component in the gas, when the volume percentage of each gas component is small, its interaction can be ignored. 10.1.2 Density change of wet gas in the atmosphere: Formula (10) Calculation: B, x. P
-P-273151336
Where: A..Density of wet gas in the pipeline under the measured state, hg/m: P-pressure of gas at the measuring point, Pa
10.1.3When the gas is dry air, the density of the gas in the pipeline under the measured state can be obtained by adding formula (11), ps
373+10132
Where: r-weight of dry air under standard state./al. 102 The flow rate of gas in the pipeline can be obtained by the Noise Reduction Calculator and expressed as follows in any state: wet gas level flow rate in the pipeline under the standard state: wet gas level flow rate under standard state: dry gas level flow rate under standard state.
10.2. The gas flow rate under actual conditions in the pressure vessel is calculated according to formula (13), VF00
wherein: Q-the minimum and maximum wind speed of the gas entering the vessel, m/5F
or the core surface of the sensitive surface where the measuring point is located,
10.2.2 The source gas flow rate under standard conditions is calculated according to formula (13): 2=2
+101325
, 2-the apparent gas velocity under standard conditions, m (standard value). 10.2.3 The dry gas flow rate under standard conditions shall be calculated according to formula (14): 0, -0, (1-.)
Where: The amount of gas in a pipe, n,/h.11 Determination of dust concentration in the gas in the pipeline
11.1 The dust concentration in the gas in the pipeline must be measured by multi-point sampling, and the location should be in accordance with the provisions of 6.1~6.3 of this standard. The mass of the powder shall be calculated by the filtration weight method. Note: The sampling system must be fully inspected before sampling. The sampling bar must be aligned with the airflow direction, and the deviation is not greater than 5. 6.
11.2 The sampling tube shall be fully sampled according to the expected flow rate. The pressure-balanced isokinetic sampling device is equipped with five sampling fences. When sampling, mobile sampling is used, that is, the same membrane is used to perform equal and continuous sampling at the same time on each measuring point on the coaxial line. Three samples are collected every minute. The 11.3 equal sampling flowmeter reading is calculated according to formula (15): Wf 2s 4*
Where:
Isokinetic sampling flowmeter reading, L/min:
Sampling surface diameter, mm!
Gas temperature in the pipeline, center:
For the most recent gas source,
+27#+
11-4 The sampling volume under standard conditions is calculated according to the formula <16>: R+P.
V,=(N?NIK
J01325
In the formula, V-
-the sampling volume under standard conditions,
11-5 The concentration of the gas is calculated according to the formula [17]: -Gas dust paint competition door/standard·dry)
In the formula, G
8The dust volume obtained by the selection·an.
12 Measurement of water consumption
Measure the water consumption with a calibrated water meter: the installation regulations of the water meter are met. Record the start and end time of the measurement base on time, and the corresponding water meter teaching and: 13 Wet dust collector performance turbulence calculation true || tt || 13.1 Calculation of dust removal rate || tt || When walking, the ten airflow discs that have been mentioned are equal to the time · according to (18) to true t =! -
In the formula:
The dust removal rate of the whole dust collector,
C—The dust content of the gas entering the dust collector B/standard,) G—The dust content of the gas leaving the dust collector·R/m (standard,), when the dust collector is located at the suction end of the fan, and the dust collector is leaking, calculate according to formula (15): c,xQ
In the formula:, -
The air volume at the inlet of the dust collector, m (standard,) The air volume at the outlet of the dust collector, m standard, dry, Q
When the dust collector is located at the outlet of the fan, and the dust collector is leaking, calculate according to formula (20+): QL
13-2 The calculation of the dust collector: A—Wet dust collector end resistance, Pa
GB/T 1518f-94
AP P,-P-PH -ZA
Production, the average gas pressure on the surface of the pipe is measured, P: P,-the average pressure of the gas on the surface of the pipe at the outlet, Pa:-the pressure between the pipe inlet and outlet of the measuring point, Ps--the buoyancy of the gas.
Fh(p-)g+H
The width of the atmosphere, kg/m
The density of the gas kg/m
The acceleration of gravity. 8.21m/s;
Method, the height difference of the particles in the outlet pipe is measured. 13.3 It is also related to the calculation period of the air flow rate of the optical filter, the air flow rate.
74 The calculation of the water consumption of the wet dust collector
,=(: m/(T-T3
W: water consumption plate, m\/h:
m,--water meter end reading m
m.--ice meter start reading m
7,--end time, h;
I,-opening, h
consumption quantity can also be calculated by formula (24): w,
Where:
k quantity m0 dry
GDT15187-92||tt ||Attached to the spirit A
Saturated water flow pressure at different temperatures
(Supplement:
The water vapor pressure of the bubble attached to the table A1 is different when the humidity changes the water vapor pressure of the pool
Additional instructions,
Standards proposed by the Ministry of Machinery and Engineering of the People's Republic of China and the Institute of Safety Equipment of Harbin. This standard is issued by Harbin Environmental Protection Institute. This standard is made by ordinary people, Shujialian, checkpoint reduction, sweeping without correctness, Li Xie,.3. According to the regulations, each point needs to be measured 3 times, and the average value of the square root of the dynamic pressure at each point is collected. When measuring the dynamic pressure value, the Pitot tube nozzle is generally pointed at the airflow direction, and the deviation shall not be greater than 5 or the average value of the square limit. The formula (>) is used to make the dynamic pressure value of each point. In the formula, P, PP, and Pa are the dynamic pressure of flue gas at each point in the structure.
10 Determination of gas flow rate in pipeline 10.1 The gas flow rate in pipeline is calculated by dynamic calendar value, and its calculation formula is as follows: fap
Equation +: v.
Gas velocity at two points. n/N
C, — Pitot correction coefficient;
β — Density of the gas being passed, kk/m
10.1.1 The gas density under standard conditions is calculated according to formula (0): [MX, IMX, +.... MX-X.) IIRX.
Where:
density of wet gas in thin state, g/(standard); molecular weight of each gas component in the gas: X, X, X, volume of each gas component in the gas, when the volume percentage of each gas component is small, its interaction can be ignored. 10.1.2 Density change of wet gas in the atmosphere is calculated by formula (10): B, x. P
-P-273151336
Where: A..Density of wet gas in the pipeline under the measured state, hg/m: P-pressure of gas at the measuring point, Pa
10.1.3When the gas is dry air, the density of the gas in the pipeline under the measured state can be obtained by adding formula (11), ps
373+10132
Where: r-weight of dry air under standard state./al. 102 The flow rate of gas in the pipeline can be obtained by the Noise Reduction Calculator and expressed as follows in any state: wet gas level flow rate in the pipeline under the standard state: wet gas level flow rate under standard state: dry gas level flow rate under standard state.
10.2. The gas flow rate under actual conditions in the pressure vessel is calculated according to formula (13), VF00
wherein: Q-the minimum and maximum wind speed of the gas entering the vessel, m/5F
or the core surface of the sensitive surface where the measuring point is located,
10.2.2 The source gas flow rate under standard conditions is calculated according to formula (13): 2=2
+101325
, 2-the apparent gas velocity under standard conditions, m (standard value). 10.2.3 The dry gas flow rate under standard conditions shall be calculated according to formula (14): 0, -0, (1-.)
Where: The amount of gas in a pipe, n,/h.11 Determination of dust concentration in the gas in the pipeline
11.1 The dust concentration in the gas in the pipeline must be measured by multi-point sampling, and the location should be in accordance with the provisions of 6.1~6.3 of this standard. The mass of the powder shall be calculated by the filtration weight method. Note: The sampling system must be fully inspected before sampling. The sampling bar must be aligned with the airflow direction, and the deviation is not greater than 5. 6.
11.2 The sampling tube shall be fully sampled according to the expected flow rate. The pressure-balanced isokinetic sampling device is equipped with five sampling fences. When sampling, mobile sampling is used, that is, the same membrane is used to perform equal and continuous sampling at the same time on each measuring point on the coaxial line. Three samples are collected every minute. The 11.3 equal sampling flowmeter reading is calculated according to formula (15): Wf 2s 4*
Where:
Isokinetic sampling flowmeter reading, L/min:
Sampling surface diameter, mm!
Gas temperature in the pipeline, center:
For the most recent gas source,
+27#+
11-4 The sampling volume under standard conditions is calculated according to the formula <16>: R+P.
V,=(N?NIK
J01325
In the formula, V-
-the sampling volume under standard conditions,
11-5 The concentration of the gas is calculated according to the formula [17]: -Gas dust paint competition door/standard·dry)
In the formula, G
8The dust volume obtained by the selection·an.
12 Measurement of water consumption
Measure the water consumption with a calibrated water meter: the installation regulations of the water meter are met. Record the start and end time of the measurement base on time, and the corresponding water meter teaching and: 13 Wet dust collector performance turbulence calculation true || tt || 13.1 Calculation of dust removal rate || tt || When walking, the ten airflow discs that have been mentioned are equal to the time · according to (18) to true t =! -
In the formula:
The dust removal rate of the whole dust collector,
C—The dust content of the gas entering the dust collector B/standard,) G—The dust content of the gas leaving the dust collector·R/m (standard,), when the dust collector is located at the suction end of the fan, and the dust collector is leaking, calculate according to formula (15): c,xQ
In the formula:, -
The air volume at the inlet of the dust collector, m (standard,) The air volume at the outlet of the dust collector, m standard, dry, Q
When the dust collector is located at the outlet of the fan, and the dust collector is leaking, calculate according to formula (20+): QL
13-2 The calculation of the dust collector: A—Wet dust collector end resistance, Pa
GB/T 1518f-94
AP P,-P-PH -ZA
Production, the average gas pressure on the surface of the pipe is measured, P: P,-the average pressure of the gas on the surface of the pipe at the outlet, Pa:-the pressure between the pipe inlet and outlet of the measuring point, Ps--the buoyancy of the gas.
Fh(p-)g+H
The width of the atmosphere, kg/m
The density of the gas kg/m
The acceleration of gravity. 8.21m/s;
Method, the height difference of the particles in the outlet pipe is measured. 13.3 It is also related to the calculation period of the air flow rate of the optical filter, the air flow rate.
74 The calculation of the water consumption of the wet dust collector
,=(: m/(T-T3
W: water consumption plate, m\/h:
m,--water meter end reading m
m.--ice meter start reading m
7,--end time, h;
I,-opening, h
consumption quantity can also be calculated by formula (24): w,
Where:
k quantity m0 dry
GDT15187-92||tt ||Attached to the spirit A
Saturated water flow pressure at different temperatures
(Supplement:
The water vapor pressure of the bubble attached to the table A1 is different when the humidity changes the water vapor pressure of the pool
Additional instructions,
Standards proposed by the Ministry of Machinery and Engineering of the People's Republic of China and the Institute of Safety Equipment of Harbin. This standard is issued by Harbin Environmental Protection Institute. This standard is made by ordinary people, Shujialian, checkpoint reduction, sweeping without correctness, Li Xie,.3. According to the regulations, each point needs to be measured 3 times, and the average value of the square root of the dynamic pressure at each point is collected. When measuring the dynamic pressure value, the Pitot tube nozzle is generally pointed at the airflow direction, and the deviation shall not be greater than 5 or the average value of the square limit. The formula (>) is used to make the dynamic pressure value of each point. In the formula, P, PP, and Pa are the dynamic pressure of flue gas at each point in the structure.
10 Determination of gas flow rate in pipeline 10.1 The gas flow rate in pipeline is calculated by dynamic calendar value, and its calculation formula is as follows: fap
Equation +: v.
Gas velocity at two points. n/N
C, — Pitot correction coefficient;
β — Density of the gas being passed, kk/m
10.1.1 The gas density under standard conditions is calculated according to formula (0): [MX, IMX, +.... MX-X.) IIRX.
Where:
density of wet gas in thin state, g/(standard); molecular weight of each gas component in the gas: X, X, X, volume of each gas component in the gas, when the volume percentage of each gas component is small, its interaction can be ignored. 10.1.2 Density change of wet gas in the atmosphere is calculated by formula (10): B, x. P
-P-273151336
Where: A..Density of wet gas in the pipeline under the measured state, hg/m: P-pressure of gas at the measuring point, Pa
10.1.3When the gas is dry air, the density of the gas in the pipeline under the measured state can be obtained by adding formula (11), ps
373+10132
Where: r-weight of dry air under standard state./al. 102 The flow rate of gas in the pipeline can be obtained by the Noise Reduction Calculator and expressed as follows in any state: wet gas level flow rate in the pipeline under the standard state: wet gas level flow rate under standard state: dry gas level flow rate under standard state.
10.2. The gas flow rate under actual conditions in the pressure vessel is calculated according to formula (13), VF00
wherein: Q-the minimum and maximum wind speed of the gas entering the vessel, m/5F
or the core surface of the sensitive surface where the measuring point is located,
10.2.2 The source gas flow rate under standard conditions is calculated according to formula (13): 2=2
+101325
, 2-the apparent gas velocity under standard conditions, m (standard value). 10.2.3 The dry gas flow rate under standard conditions shall be calculated according to formula (14): 0, -0, (1-.)
Where: The amount of gas in a pipe, n,/h.11 Determination of dust concentration in the gas in the pipeline
11.1 The dust concentration in the gas in the pipeline must be measured by multi-point sampling, and the location should be in accordance with the provisions of 6.1~6.3 of this standard. The mass of the powder shall be calculated by the filtration weight method. Note: The sampling system must be fully inspected before sampling. The sampling bar must be aligned with the airflow direction, and the deviation is not greater than 5. 6.
11.2 The sampling tube shall be fully sampled according to the expected flow rate. The pressure-balanced isokinetic sampling device is equipped with five sampling fences. When sampling, mobile sampling is used, that is, the same membrane is used to perform equal and continuous sampling at the same time on each measuring point on the coaxial line. Three samples are collected every minute. The 11.3 equal sampling flowmeter reading is calculated according to formula (15): Wf 2s 4*
Where:
Isokinetic sampling flowmeter reading, L/min:
Sampling surface diameter, mm!
Gas temperature in the pipeline, center:
For the most recent gas source,
+27#+
11-4 The sampling volume under standard conditions is calculated according to the formula <16>: R+P.
V,=(N?NIK
J01325
In the formula, V-
-the sampling volume under standard conditions,
11-5 The concentration of the gas is calculated according to the formula [17]: -Gas dust paint competition door/standard·dry)
In the formula, G
8The dust volume obtained by the selection·an.
12 Measurement of water consumption
Measure the water consumption with a calibrated water meter: the installation regulations of the water meter are met. Record the start and end time of the measurement base on time, and the corresponding water meter teaching and: 13 Wet dust collector performance turbulence calculation true || tt || 13.1 Calculation of dust removal rate || tt || When walking, the ten airflow discs that have been mentioned are equal to the time · according to (18) to true t =! -
In the formula:
The dust removal rate of the whole dust collector,
C—The dust content of the gas entering the dust collector B/standard,) G—The dust content of the gas leaving the dust collector·R/m (standard,), when the dust collector is located at the suction end of the fan, and the dust collector is leaking, calculate according to formula (15): c,xQ
In the formula:, -
The air volume at the inlet of the dust collector, m (standard,) The air volume at the outlet of the dust collector, m standard, dry, Q
When the dust collector is located at the outlet of the fan, and the dust collector is leaking, calculate according to formula (20+): QL
13-2 The calculation of the dust collector: A—Wet dust collector end resistance, Pa
GB/T 1518f-94
AP P,-P-PH -ZA
Production, the average gas pressure on the surface of the pipe is measured, P: P,-the average pressure of the gas on the surface of the pipe at the outlet, Pa:-the pressure between the pipe inlet and outlet of the measuring point, Ps--the buoyancy of the gas.
Fh(p-)g+H
The width of the atmosphere, kg/m
The density of the gas kg/m
The acceleration of gravity. 8.21m/s;
Method, the height difference of the particles in the outlet pipe is measured. 13.3 It is also related to the calculation period of the air flow rate of the optical filter, the air flow rate.
74 The calculation of the water consumption of the wet dust collector
,=(: m/(T-T3
W: water consumption plate, m\/h:
m,--water meter end reading m
m.--ice meter start reading m
7,--end time, h;
I,-opening, h
consumption quantity can also be calculated by formula (24): w,
Where:
k quantity m0 dry
GDT15187-92||tt ||Attached to the spirit A
Saturated water flow pressure at different temperatures
(Supplement:
The water vapor pressure of the bubble attached to the table A1 is different when the humidity changes the water vapor pressure of the pool
Additional instructions,
Standards proposed by the Ministry of Machinery and Engineering of the People's Republic of China and the Institute of Safety Equipment of Harbin. This standard is issued by Harbin Environmental Protection Institute. This standard is made by ordinary people, Shujialian, checkpoint reduction, sweeping without correctness, Li Xie,./al. 102 The gas flow in the pipeline can be obtained by the calculation method and expressed in any state as follows: the wet gas level flow in the pipeline under the standard state: the wet gas level flow under the standard state:
the dry gas level flow under the standard state.
10.2. The gas flow under the actual state in the pipeline is calculated according to formula (13), VF00
where: Q-the minimum and maximum air velocity of the gas entering the pipeline m/min: the average wind speed of the measuring point in the pipeline at the intersection, m/5F
or the surface of the measuring point in the pipeline,
10.2.2 The source gas flow under the standard state is calculated according to formula (13): 2=2
+101325
, 2-the apparent gas flow under the standard state, m (standard). 10.2.3 The dry gas flow rate under standard conditions shall be calculated according to formula (14): 0, -0, (1-.)
Where: The amount of gas in a pipe, n,/h.11 Determination of dust concentration in the gas in the pipeline
11.1 The dust concentration in the gas in the pipeline must be measured by multi-point sampling, and the location should be in accordance with the provisions of 6.1~6.3 of this standard. The mass of the powder shall be calculated by the filtration weight method. Note: The sampling system must be fully inspected before sampling. The sampling bar must be aligned with the airflow direction, and the deviation is not greater than 5. 6.
11.2 The sampling tube shall be fully sampled according to the expected flow rate. The pressure-balanced isokinetic sampling device is equipped with five sampling fences. When sampling, mobile sampling is used, that is, the same membrane is used to perform equal and continuous sampling at the same time on each measuring point on the coaxial line. Three samples are collected every minute. The 11.3 equal sampling flowmeter reading is calculated according to formula (15): Wf 2s 4*
Where:
Isokinetic sampling flowmeter reading, L/min:
Sampling surface diameter, mm!
Gas temperature in the pipeline, center:
For the most recent gas source,
+27#+
11-4 The sampling volume under standard conditions is calculated according to the formula <16>: R+P.
V,=(N?NIK
J01325
In the formula, V-
-the sampling volume under standard conditions,
11-5 The concentration of the gas is calculated according to the formula [17]: -Gas dust paint competition door/standard·dry)
In the formula, G
8The dust volume obtained by the selection·an.
12 Measurement of water consumption
Measure the water consumption with a calibrated water meter: the installation regulations of the water meter are met. Record the start and end time of the measurement base on time, and the corresponding water meter teaching and: 13 Wet dust collector performance turbulence calculation true || tt || 13.1 Calculation of dust removal rate || tt || When walking, the ten airflow discs that have been mentioned are equal to the time · according to (18) to true t =! -
In the formula:
The dust removal rate of the whole dust collector,
C—The dust content of the gas entering the dust collector B/standard,) G—The dust content of the gas leaving the dust collector·R/m (standard,), when the dust collector is located at the suction end of the fan, and the dust collector is leaking, calculate according to formula (15): c,xQ
In the formula:, -
The air volume at the inlet of the dust collector, m (standard,) The air volume at the outlet of the dust collector, m standard, dry, Q
When the dust collector is located at the outlet of the fan, and the dust collector is leaking, calculate according to formula (20+): QL
13-2 The calculation of the dust collector: A—Wet dust collector end resistance, Pa
GB/T 1518f-94
AP P,-P-PH -ZA
Production, the average gas pressure on the surface of the pipe is measured, P: P,-the average pressure of the gas on the surface of the pipe at the outlet, Pa:-the pressure between the pipe inlet and outlet of the measuring point, Ps--the buoyancy of the gas.
Fh(p-)g+H
The width of the atmosphere, kg/m
The density of the gas kg/m
The acceleration of gravity. 8.21m/s;
Method, the height difference of the particles in the outlet pipe is measured. 13.3 It is also related to the calculation period of the air flow rate of the optical filter, the air flow rate.
74 The calculation of the water consumption of the wet dust collector
,=(: m/(T-T3
W: water consumption plate, m\/h:
m,--water meter end reading m
m.--ice meter start reading m
7,--end time, h;
I,-opening, h
consumption quantity can also be calculated by formula (24): w,
Where:
k quantity m0 dry
GDT15187-92||tt ||Attached to the spirit A
Saturated water flow pressure at different temperatures
(Supplement:
The water vapor pressure of the bubble attached to the table A1 is different when the humidity changes the water vapor pressure of the pool
Additional instructions,
Standards proposed by the Ministry of Machinery and Engineering of the People's Republic of China and the Institute of Safety Equipment of Harbin. This standard is issued by Harbin Environmental Protection Institute. This standard is made by ordinary people, Shujialian, checkpoint reduction, sweeping without correctness, Li Xie,./al. 102 The gas flow in the pipeline can be obtained by the calculation method and expressed in any state as follows: the wet gas level flow in the pipeline under the standard state: the wet gas level flow under the standard state:
the dry gas level flow under the standard state.
10.2. The gas flow under the actual state in the pipeline is calculated according to formula (13), VF00
where: Q-the minimum and maximum air velocity of the gas entering the pipeline m/min: the average wind speed of the measuring point in the pipeline at the intersection, m/5F
or the surface of the measuring point in the pipeline,
10.2.2 The source gas flow under the standard state is calculated according to formula (13): 2=2
+101325
, 2-the apparent gas flow under the standard state, m (standard). 10.2.3 The dry gas flow rate under standard conditions shall be calculated according to formula (14): 0, -0, (1-.)bzxz.net
Where: The amount of gas in a pipe, n,/h.11 Determination of dust concentration in the gas in the pipeline
11.1 The dust concentration in the gas in the pipeline must be measured by multi-point sampling, and the location should be in accordance with the provisions of 6.1~6.3 of this standard. The mass of the powder shall be calculated by the filtration weight method. Note: The sampling system must be fully inspected before sampling. The sampling bar must be aligned with the airflow direction, and the deviation is not greater than 5. 6.
11.2 The sampling tube shall be fully sampled according to the expected flow rate. The pressure-balanced isokinetic sampling device is equipped with five sampling fences. When sampling, mobile sampling is used, that is, the same membrane is used to perform equal and continuous sampling at the same time on each measuring point on the coaxial line. Three samples are collected every minute. The 11.3 equal sampling flowmeter reading is calculated according to formula (15): Wf 2s 4*
Where:
Isokinetic sampling flowmeter reading, L/min:
Sampling surface diameter, mm!
Gas temperature in the pipeline, center:
For the most recent gas source,
+27#+
11-4 The sampling volume under standard conditions is calculated according to the formula <16>: R+P.
V,=(N?NIK
J01325
In the formula, V-
-the sampling volume under standard conditions,
11-5 The concentration of the gas is calculated according to the formula [17]: -Gas dust paint competition door/standard·dry)
In the formula, G
8The dust volume obtained by the selection·an.
12 Measurement of water consumption
Measure the water consumption with a calibrated water meter: the installation regulations of the water meter are met. Record the start and end time of the measurement base on time, and the corresponding water meter teaching and: 13 Wet dust collector performance turbulence calculation true || tt || 13.1 Calculation of dust removal rate || tt || When walking, the ten airflow discs that have been mentioned are equal to the time · according to (18) to true t =! -
In the formula:
The dust removal rate of the whole dust collector,
C—The dust content of the gas entering the dust collector B/standard,) G—The dust content of the gas leaving the dust collector·R/m (standard,), when the dust collector is located at the suction end of the fan, and the dust collector is leaking, calculate according to formula (15): c,xQ
In the formula:, -
The air volume at the inlet of the dust collector, m (standard,) The air volume at the outlet of the dust collector, m standard, dry, Q
When the dust collector is located at the outlet of the fan, and the dust collector is leaking, calculate according to formula (20+): QL
13-2 The calculation of the dust collector: A—Wet dust collector end resistance, Pa
GB/T 1518f-94
AP P,-P-PH -ZA
Production, the average gas pressure on the surface of the pipe is measured, P: P,-the average pressure of the gas on the surface of the pipe at the outlet, Pa:-the pressure between the pipe inlet and outlet of the measuring point, Ps--the buoyancy of the gas.
Fh(p-)g+H
The width of the atmosphere, kg/m
The density of the gas kg/m
The acceleration of gravity. 8.21m/s;
Method, the height difference of the particles in the outlet pipe is measured. 13.3 It is also related to the calculation period of the air flow rate of the optical filter, the air flow rate.
74 The calculation of the water consumption of the wet dust collector
,=(: m/(T-T3
W: water consumption plate, m\/h:
m,--water meter end reading m
m.--ice meter start reading m
7,--end time, h;
I,-opening, h
consumption quantity can also be calculated by formula (24): w,
Where:
k quantity m0 dry
GDT15187-92||tt ||Attached to the spirit A
Saturated water flow pressure at different temperatures
(Supplement:
The water vapor pressure of the bubble attached to the table A1 is different when the humidity changes the water vapor pressure of the pool
Additional instructions,
Standards proposed by the Ministry of Machinery and Engineering of the People's Republic of China and the Institute of Safety Equipment of Harbin. This standard is issued by Harbin Environmental Protection Institute. This standard is made by ordinary people, Shujialian, checkpoint reduction, sweeping without correctness, Li Xie,.xQ
Where: ,-
Air volume at dust collector inlet, m (standard,) 2. Air volume at dust collector outlet, m standard, dry, Q
When the dust collector is located at the outlet of the fan, the dust collector leakage is, according to the formula (20 +: QL
13-2 Fu type tracking device calculation method: A—Wet dust collector end resistance, Pa
GB/T 1518f-94
AP P,-P-PH -ZA
Production, the average gas pressure on the surface of the measured inlet pipe, P: P, - the average pressure of the gas in a certain section of the outlet pipe, Pa: - the pressure difference between the pipe inlet and outlet of the measuring point filter, Ps - the buoyancy of the gas.
Fh(p-)g+H
Width of the atmosphere, kg/m
Density of gas kg/m
Acceleration of gravity. 8.21m/s;
Method, the height difference of the particles in the outlet pipe is measured. 13.3 Also in the calculation period of the air flow rate of the optical filter, the air flow rate.
74 Calculation of water consumption of wet dust collector
, =(: m/(T-T3
W: water consumption plate, m\/h:
m,--water meter end reading m
m.--ice meter start reading m
7,--end time, h;
I,-opening, h
consumption quantity can also be calculated by formula (24): w,
Where:
k quantity m0 dry
GDT15187-92||tt ||Attached to the spirit A
Saturated water flow pressure at different temperatures
(Supplement:
The water vapor pressure of the bubble attached to the table A1 is different when the humidity changes the water vapor pressure of the pool
Additional instructions,
Standards proposed by the Ministry of Machinery and Engineering of the People's Republic of China and the Institute of Safety Equipment of Harbin. This standard is issued by Harbin Environmental Protection Institute. This standard is made by ordinary people, Shujialian, checkpoint reduction, sweeping without correctness, Li Xie,.xQ
Where: ,-
Air volume at dust collector inlet, m (standard,) 2. Air volume at dust collector outlet, m standard, dry, Q
When the dust collector is located at the outlet of the fan, the dust collector leakage is, according to the formula (20 +: QL
13-2 Fu type tracking device calculation method: A—Wet dust collector end resistance, Pa
GB/T 1518f-94
AP P,-P-PH -ZA
Production, the average gas pressure on the surface of the measured inlet pipe, P: P, - the average pressure of the gas in a certain section of the outlet pipe, Pa: - the pressure difference between the pipe inlet and outlet of the measuring point filter, Ps - the buoyancy of the gas.
Fh(p-)g+H
Width of the atmosphere, kg/m
Density of gas kg/m
Acceleration of gravity. 8.21m/s;
Method, the height difference of the particles in the outlet pipe is measured. 13.3 Also in the calculation period of the air flow rate of the optical filter, the air flow rate.
74 Calculation of water consumption of wet dust collector
, =(: m/(T-T3
W: water consumption plate, m\/h:
m,--water meter end reading m
m.--ice meter start reading m
7,--end time, h;
I,-opening, h
consumption quantity can also be calculated by formula (24): w,
Where:
k quantity m0 dry
GDT15187-92||tt ||Attached to the spirit A
Saturated water flow pressure at different temperatures
(Supplement:
The water vapor pressure of the bubble attached to the table A1 is different when the humidity changes the water vapor pressure of the pool
Additional instructions,
Standards proposed by the Ministry of Machinery and Engineering of the People's Republic of China and the Institute of Safety Equipment of Harbin. This standard is issued by Harbin Environmental Protection Institute. This standard is made by ordinary people, Shujialian, checkpoint reduction, sweeping without correctness, Li Xie,.
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