GB 18483-2001 Emission standard for cooking fumes in the catering industry

This standard specifies the maximum permissible emission concentration of cooking fumes from catering units and the minimum removal efficiency of cooking fume purification facilities. This standard applies to urban built-up areas. This standard applies to the cooking fume emission management of existing catering units, as well as the design, environmental impact assessment, completion acceptance of environmental protection facilities and cooking fume emission management during the operation of newly established catering units; food processing units and internal staff canteens of non-profit units that emit cooking fumes shall refer to this standard for implementation. GB 18483-2001 Catering Fume Emission Standard GB18483-2001 Standard download decompression password: www.bzxz.net

ICS 13. 030. 01
National Standard of the People's Republic of China
GB18483--2001
Replaces GPB5--2000
Emission standard of cooking fume for catering industry
(Trial)
Emission standard of cooking fume2001-11-12Promulgated
Implemented on 2002-01-01
State Environmental Protection Administration
General Administration of Quality Supervision, Inspection and Quarantine
GB18483--2001
This standard is formulated to implement the Law of the People's Republic of China on the Prevention and Control of Air Pollution and to prevent and control the pollution of the atmosphere and living environment by cooking fume from the catering industry.
This standard specifies the maximum allowable emission concentration of cooking fume from catering units and the minimum removal efficiency of cooking fume purification equipment. The content of this standard (including the implementation date) is equivalent to the "Emission Standard for Cooking Fumes from Catering Industry" (Trial) (GWPB5-2000) issued by the State Environmental Protection Administration on February 29, 2000. From the date of implementation of this standard, it will replace GWPB5-2000. The State Environmental Protection Administration is responsible for the interpretation of this standard. 326
1 Subject content and scope of application
1.1 Subject content
Emission Standard for Cooking Fumes from Catering Industry
(Trial)
GB 18483-2001
This standard specifies the maximum allowable emission concentration of cooking fumes from catering units and the minimum removal efficiency of cooking fume purification facilities. 1.2 Scope of application
1.2.1 This standard applies to urban built-up areas. 1.2.2 This standard applies to the management of cooking fume emissions from existing catering units, as well as the design, environmental impact assessment, completion acceptance of environmental protection facilities and cooking fume emissions during the operation of newly established catering units; food processing units and internal staff canteens of non-profit units that emit cooking fume shall refer to this standard for implementation.
1.2.3 This standard does not apply to cooking fume emissions from residential households. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. GB3095--1996 Ambient Air Quality Standard GB/T16157-1996 Sampling Method for Particulate Matter and Gaseous Pollutants in Exhaust Gas from Stationary Pollution Sources GB14554-1993 Emission Standard for Odor Pollutants 3 Definitions
This standard adopts the following definitions.
3.1 Standard State
The state at a temperature of 273K and a pressure of 101 325Pa. The concentration standard values ​​specified in this standard are all dry flue gas values ​​under standard conditions.
3.2 Oil fume
The volatile oils, organic matter and their heating decomposition or cracking products released during the cooking and processing of food are collectively referred to as oil fume. 3.3 City
It is the same as the definition of city in the "Urban Planning Law of the People's Republic of China", namely: municipalities, cities and towns established by the state according to the administrative system. 3.4 Catering Industry Unit
All smoke exhaust stoves in the same building and belonging to the same legal person are counted as one catering industry unit. 3.5 Unorganized emission
Oil fume emission that has not been purified by any oil fume purification facility. 3.6 Oil fume removal efficiency
It refers to the percentage of the mass of oil fume removed after the oil fume is treated by the purification facility to the mass of the oil fume before purification. P=cmn×Q×8s×Q ×100%
Where: P-
Oil fume removal efficiency,%
GB 18483--2001
.C before - oil fume concentration before treatment facilities, mg/m; Q before - exhaust volume before treatment facilities, m2/h; C after - oil fume concentration after treatment facilities, mg/m\; Q after - exhaust volume after treatment facilities, m/h. 4 Standard limit
4.1 The minimum removal efficiency limit of oil fume purification facilities of catering units is divided into three levels: large, medium and small according to scale; the scale of catering units is divided according to the number of reference stoves, and the number of reference stoves is converted according to the total heating power of the stove or the total projection area of ​​the exhaust hood stove surface. The heating power corresponding to each reference stove is 1.67×10°J/h, and the corresponding exhaust hood stove surface projection area is 1.1m2. The scale classification parameters of catering units are shown in Table 1. Table 1 Scale classification of catering units
Benchmark number of stoves
Corresponding total power of stoves/(10°J/h)
Corresponding exhaust hood and stove surface
Total projected area/m
1. 67,<5.00
≥1.1,<3. 3
≥3,<6
≥5. 00,<10
≥3. 3,<6. 6
4.2 The maximum allowable emission concentration of oil fume and the minimum removal efficiency of oil fume purification facilities of catering units shall be implemented in accordance with the provisions of Table 2. Table 2 Maximum allowable emission concentration of oil fume and minimum removal efficiency of oil fume purification facilities for catering units
Maximum allowable emission concentration/(mg/m3)
Minimum removal efficiency of purification facilities/%
5 Other regulations
5.1 Catering units that emit oil fume must install oil fume purification facilities and ensure that they operate as required during operation. Unorganized emission of oil fume is considered to exceed the standard.
5.2 The length of the exhaust pipe outlet section should be at least 4.5 times the diameter (or equivalent diameter) of the straight pipe section. 5.3 The direction of the exhaust pipe outlet should avoid buildings that are easily affected. The specific regulations on the height and position of the oil fume exhaust pipe shall be formulated by the provincial environmental protection department.
5.4 The exhaust system should be sealed and intact, and it is prohibited to artificially dilute the pollutant concentration in the exhaust pipe. 5.5 When the catering industry produces special odors, refer to the odor concentration indicators of the "Emission Standards for Malodor Pollutants" for implementation. 6 Monitoring
6.1 Sampling location
The sampling location should be preferably selected in the vertical pipe section. Avoid the flue elbow and the part with sharp cross-section changes. The sampling location should be set at a distance of not less than 3 times the diameter in the downstream direction of the elbow and reducer, and not less than 1.5 times the diameter in the upstream direction of the above components. For a rectangular flue, its equivalent diameter is D2AB/(A+B), where A and B are the side lengths. 6.2 Sampling point
When the cross-sectional area of ​​the exhaust pipe is less than 0.5m2, only one point is measured, and the median value of the dynamic pressure is taken; when the cross-sectional area exceeds the above, it shall be carried out in accordance with the relevant provisions of GB/T16157-1996. 6.3 Sampling time and frequency
When the emission limit indicator system specified in this standard is implemented, the sampling time shall be during the normal operation of the oil fume emission unit, and the number of sampling shall be 5 consecutive samplings, each time for 10 minutes.
6.4 Sampling conditions
GB 18483--2001
Sample collection should be carried out during the peak period of oil fume emission unit operation (cooking, food processing or other operations that generate oil fume). 6.5 Analysis result processing
Between the five sampling analysis results, if any data is compared with the maximum value and the data is less than one-fourth of the maximum value, the data is invalid and cannot be used for the average value calculation. After the data are selected, at least three data are used for the average value calculation. If the data do not meet the above conditions, resampling is required. 6.6 When monitoring emission concentration, the measured emission concentration should be converted to the emission concentration at the reference air volume: Q
C base = C ×,
nXq base
where C base -
converted to the emission concentration at the reference exhaust volume of a single stove, mg/m; Q measured - measured exhaust volume. m ° / h;
C brake - measured emission concentration, mg/m;
9 base - single stove base exhaust volume, large, medium and small are all 2000m * / h, n - the number of converted working stoves.
7 Implementation of standards
7.1 The installation and normal operation of oil fume purification facilities that meet the requirements of 4.2 shall be deemed to meet the standards. Environmental protection departments at or above the county level may supervise and monitor the oil fume emissions of catering units as needed. 7.2 The same standard value shall be implemented for new and old pollution sources. Catering units that have been opened or approved for establishment before the implementation date of this standard are existing catering units. Those that have not met the standards shall meet the standards within a time limit. Catering units approved for establishment on the date of implementation of this standard are new catering units and shall implement this standard in accordance with the "three simultaneous" requirements. 7.3 Fume purification facilities must be tested and qualified by a nationally recognized unit before they can be installed and used. 7.4 The environmental protection administrative department of the people's government at or above the county level is responsible for supervising the implementation of this standard. 329
GB 18483--2001
A.1 Principle
Appendix A
(Standard Appendix)
Methods for sampling and analysis of oil fume in the catering industry Metal filter absorption and infrared spectrophotometry for sampling and analysis of oil fume The gas in the oil fume exhaust tube is extracted by isokinetic sampling method, and the oil fume is adsorbed in the oil fume collection head. The collection filter element with collected oil fume is placed in a polytetrafluoroethylene sleeve with a cover. After returning to the laboratory, it is ultrasonically cleaned with carbon tetrachloride as a solvent, transferred to a colorimetric tube to make a fixed volume, and the oil fume content is determined by infrared spectrophotometry. The oil fume content is calculated by the absorbance A2930, A2960 and A3030 at the wave numbers of 2930cm-1 (stretching vibration of CH bond in CHz group), 2960cm-1 (stretching vibration of C--H bond in CH, group) and 3030cm-1 (stretching vibration of C--H bond in aromatic ring).
A.2 Reagents
A.2.1 Carbon tetrachloride (CCl.): Scan the absorbance value between 2600cm-1~3300cm-1 and it should not exceed 0.03 (4cm colorimetric blood). Generally, analytical pure carbon tetrachloride can meet the requirements by distilling it once. A.2.2 High-temperature reflux edible peanut oil (or rapeseed oil, blended oil, etc.). Method for high-temperature reflux oil: Add 300mL of edible oil to a 500mL three-necked flask, insert a thermometer with a range of 500℃, first control the temperature at 120℃, heat it at the outlet for 30min, then install an air condenser just above it, heat it to 300℃, reflux it for 2h, and you will get the standard oil. A.3 Instruments and equipment
A, 3.1 Instrument: Infrared spectrometer, which can scan the absorbance value between 3400cm-1 and 2400cm-1, and match it with a 4cm quartz colorimetric dish with a lid.
A.3.2 Ultrasonic cleaner.
A.3.3 Volumetric flask: 50mL, 25mL.
A.3.4 Fume sampler and filter cartridge.
A.3.5 Colorimetric tube: 25mL.
A.3.6 Polytetrafluoroethylene cylindrical sleeve with cover. A.3.7 Smoke tester, the technical indicators of its sampling system shall refer to GB/T16157-1996. A.4 Sampling and sample preservation
A.4.1 Sampling:
The sampling points, sampling time and frequency, and sampling conditions are all in the standard text. A.4.1.1 Sampling steps
Refer to the isokinetic sampling steps of smoke in GB/T16157-1996. (1) Before sampling, check the air tightness of the system. (2) Heat the fully heated sampling tube for humidity measurement, wet the dry and wet bulbs, measure the dry and wet bulb temperatures and wet bulb negative pressure; measure the flue gas temperature, atmospheric pressure and exhaust pipe diameter; measure the flue gas dynamic and static pressure and other condition parameters. (3) Determine the constant speed sampling flow rate and the sampling nozzle diameter. (4) Install the sampling nozzle and filter cartridge. When installing the filter cartridge, be careful to pour the filter cartridge directly from the polytetrafluoroethylene sleeve into the sampling head, and pay special attention not to contaminate the filter cartridge surface.
(5) Place the sampling tube into the flue and close the sampling hole. (6) Set the sampling time and turn on the machine.
GB 18483-2001
(7) Record or print the cumulative volume, sampling flow rate, gauge negative pressure, temperature and sampling time before and after sampling. Record the filter cartridge number. (8) The fume sampler collects fume.
A.4.2 Sample storage: The filter cartridge that has collected the oil smoke should be immediately transferred to a polytetrafluoroethylene cleaning cup and the cup cover should be tightly closed; if the sample cannot be measured within 24 hours, it can be stored in the refrigerator (≤4°C) for 7 days. A.5 Test conditions
A, 5.1 After cleaning, the filter cartridge should be placed in a ventilated and dust-free place to dry; A.5.2 Before and after sampling, ensure that no other oily items contaminate the filter cartridge. A.6 Sample determination steps
(1) Soak the sampled filter cartridge in 12 mL of redistilled carbon tetrafluoride solvent in a polytetrafluoroethylene cleaning cup and cover the cleaning cup lid; (2) Place the cleaning cup in an ultrasonic instrument and perform ultrasonic cleaning for 10 min; (3) Transfer the cleaning solution to a 25 mL colorimetric tube; (4) Add 6 mL of carbon tetrachloride to the cleaning cup and perform ultrasonic cleaning for 5 min; (5) Transfer the cleaning solution to the above 25 mL colorimetric tube; (6) Wash the filter cartridge and polytetrafluoroethylene cup twice with a small amount of carbon tetrachloride and clean them together. Transfer to the above 25mL colorimetric tube, add carbon tetrachloride and dilute to the scale mark,
(7) Infrared spectrophotometry: Preheat the infrared measuring instrument for more than 1h before measurement, adjust the zero point and full scale, and fix a set of correction coefficients;
(8) Preparation of standard series: Accurately weigh 1g of the corresponding edible oil standard sample that has been refluxed on a balance with an accuracy of one hundred thousandths into a 50mL volumetric flask, and dilute to the scale with analytical pure carbon tetrachloride after redistillation (control the temperature at 70-74°C) to obtain a high concentration standard solution A. Take 1.00mL of solution A in a 50mL volumetric flask and dilute to the scale with the above carbon tetrachloride to obtain the standard intermediate solution B. Transfer a certain amount of solution B to a 25mL volumetric flask and dilute to the scale with carbon tetrafluoride to prepare a standard series (concentration range 0-60mg/L). (9) Sample determination: Soak the sampling filter in the polytetrafluoroethylene cup with an appropriate amount of carbon tetrachloride, cover and tighten the cup cover, place the cup on an ultrasonicator for cleaning for 5 minutes, pour the cleaning solution into a 25mL colorimetric tube, and then use an appropriate amount of carbon tetrachloride to clean the filter twice, transfer the cleaning solution into the colorimetric tube, and dilute to the scale to obtain the sample solution. Place the sample solution in a 4cm colorimetric dish and perform the infrared spectrometry test. A.7 Result calculation
A.7.1 Formula for calculating the efficiency of oil fume treatment
See Appendix B and Section 3.7 of the standard text.
A.7.2 Formula for calculating the concentration of oil fume emissions
Where; C measured oil fume emission concentration, mg/m; Cm = inlet × V/1 000
C luxury liquid——oil fume concentration of filter cleaning liquid, mg/L; V——volume of filter cleaning liquid diluted to volume, mL; V. ——Dry flue gas sampling volume under standard conditions, the calculation method is based on GB/T161571996, m2. (A.1)
GB18483-2001
Measurement accuracy: ±0.02mg/m;
Reproducibility: CV%≤1.8;
Working temperature range: 0~～100℃;
Oil fume collection efficiency: ≥95%;
Appendix B
(Standard Appendix)
Oil fume sampler technical specifications
Dimensions: filter length 56.00±0.05mm; filter diameter 17.00±0.05mm;
Power supply voltage: 220V.
Appendix C
(Appendix to the standard)
Method for determining the oil fume removal efficiency
The oil fume removal efficiency determination of oil fume purification facilities is divided into two cases: (1) For oil fume purification facilities installed in the oil fume exhaust duct, the oil fume removal efficiency can be calculated according to the formula in 3.6 of the standard text by simultaneously measuring the oil fume emission concentration and air volume before and after purification. (2) For purification facilities installed on the exhaust hood, it is necessary to determine a stable smoke source before conducting the efficiency test, and then measure the oil fume emission concentration and air volume when and without the purification facility installed, and then calculate the oil fume removal efficiency according to the formula in 3.6 of the standard text. 3324 Fume sampler and filter cartridge.
A.3.5 Colorimetric tube: 25mL.
A.3.6 Polytetrafluoroethylene cylindrical sleeve with cover. A.3.7 Smoke tester, the technical indicators of its sampling system shall refer to GB/T16157-1996. A.4 Sampling and sample preservation
A.4.1 Sampling:
The sampling points, sampling time and frequency, and sampling conditions are all in the standard text. A.4.1.1 Sampling steps
Refer to the smoke isokinetic sampling steps of GB/T16157-1996. (1) Before sampling, check the air tightness of the system. (2) Heat the fully heated sampling tube for humidity measurement, wet the dry and wet bulbs, measure the dry and wet bulb temperatures and wet bulb negative pressure; measure the flue gas temperature, atmospheric pressure and exhaust pipe diameter; measure the flue gas dynamic and static pressure and other condition parameters. (3) Determine the constant speed sampling flow rate and the diameter of the sampling nozzle. (4) Install the sampling nozzle and filter cartridge. When installing the filter cartridge, be careful to pour the filter cartridge directly from the polytetrafluoroethylene sleeve into the sampling head, and pay special attention not to contaminate the surface of the filter cartridge.
(5) Place the sampling tube into the flue and close the sampling hole. (6) Set the sampling time and turn on the machine.
GB 18483-2001
(7) Record or print the cumulative volume, sampling flow rate, gauge negative pressure, temperature and sampling time before and after sampling. Record the filter cartridge number. (8) The oil fume sampler collects oil fume.
A.4.2 Sample storage: The filter cartridge that collects oil fume should be immediately transferred to the polytetrafluoroethylene cleaning cup and the cup lid should be tightly closed; if the sample cannot be measured within 24 hours, it can be stored in the refrigerator (≤4°C) for 7 days. A.5 Test conditions
A, 5.1 After cleaning, the filter cartridge should be placed in a ventilated and dust-free place to dry; A.5.2 Before and after sampling, ensure that no other oily items contaminate the filter cartridge. A.6 Sample determination steps
(1) Soak the sampled filter cartridge in 12mL of redistilled carbon tetrafluoride solvent in a polytetrafluoroethylene cleaning cup and cover the cleaning cup lid; (2) Place the cleaning cup in an ultrasonic instrument and perform ultrasonic cleaning for 10 minutes; (3) Transfer the cleaning solution to a 25mL colorimetric tube; (4) Add 6mL of carbon tetrachloride to the cleaning cup and perform ultrasonic cleaning for 5 minutes; (5) Transfer the cleaning solution to the above 25mL colorimetric tube; (6) Use a small amount of carbon tetrachloride to clean the filter cartridge and polytetrafluoroethylene cup twice, and then clean them together. Transfer to the above 25mL colorimetric tube, add carbon tetrachloride and dilute to the scale mark,
(7) Infrared spectrophotometry: Preheat the infrared measuring instrument for more than 1h before measurement, adjust the zero point and full scale, and fix a set of correction coefficients;
(8) Preparation of standard series: Accurately weigh 1g of the corresponding edible oil standard sample that has been refluxed on a balance with an accuracy of one hundred thousandths into a 50mL volumetric flask, and dilute to the scale with analytical pure carbon tetrachloride after redistillation (control the temperature at 70-74°C) to obtain a high concentration standard solution A. Take 1.00mL of solution A in a 50mL volumetric flask and dilute to the scale with the above carbon tetrachloride to obtain the standard intermediate solution B. Transfer a certain amount of solution B to a 25mL volumetric flask and dilute to the scale with carbon tetrafluoride to prepare a standard series (concentration range 0-60mg/L). (9) Sample determination: Soak the sampling filter in the polytetrafluoroethylene cup with an appropriate amount of carbon tetrachloride, cover and tighten the cup cover, place the cup on an ultrasonicator for cleaning for 5 minutes, pour the cleaning solution into a 25mL colorimetric tube, and then use an appropriate amount of carbon tetrachloride to clean the filter twice, transfer the cleaning solution into the colorimetric tube, and dilute to the scale to obtain the sample solution. Place the sample solution in a 4cm colorimetric dish and perform the infrared spectrometry test. A.7 Result calculation
A.7.1 Formula for calculating the efficiency of oil fume treatment
See Appendix B and Section 3.7 of the standard text.
A.7.2 Formula for calculating the concentration of oil fume emissions
Where; C measured oil fume emission concentration, mg/m; Cm = inlet × V/1 000
C luxury liquid——oil fume concentration of filter cleaning liquid, mg/L; V——volume of filter cleaning liquid diluted to volume, mL; V. ——Dry flue gas sampling volume under standard conditions, the calculation method is based on GB/T161571996, m2. (A.1)
GB18483-2001
Measurement accuracy: ±0.02mg/m;
Reproducibility: CV%≤1.8;
Working temperature range: 0~～100℃;
Oil fume collection efficiency: ≥95%;
Appendix BbZxz.net
(Standard Appendix)
Oil fume sampler technical specifications
Dimensions: filter length 56.00±0.05mm; filter diameter 17.00±0.05mm;
Power supply voltage: 220V.
Appendix C
(Appendix to the standard)
Method for determining the oil fume removal efficiency
The oil fume removal efficiency determination of oil fume purification facilities is divided into two cases: (1) For oil fume purification facilities installed in the oil fume exhaust duct, the oil fume removal efficiency can be calculated according to the formula in 3.6 of the standard text by simultaneously measuring the oil fume emission concentration and air volume before and after purification. (2) For purification facilities installed on the exhaust hood, it is necessary to determine a stable smoke source before conducting the efficiency test, and then measure the oil fume emission concentration and air volume when and without the purification facility installed, and then calculate the oil fume removal efficiency according to the formula in 3.6 of the standard text. 3324 Fume sampler and filter cartridge.
A.3.5 Colorimetric tube: 25mL.
A.3.6 Polytetrafluoroethylene cylindrical sleeve with cover. A.3.7 Smoke tester, the technical indicators of its sampling system shall refer to GB/T16157-1996. A.4 Sampling and sample preservation
A.4.1 Sampling:
The sampling points, sampling time and frequency, and sampling conditions are all in the standard text. A.4.1.1 Sampling steps
Refer to the smoke isokinetic sampling steps of GB/T16157-1996. (1) Before sampling, check the air tightness of the system. (2) Heat the fully heated sampling tube for humidity measurement, wet the dry and wet bulbs, measure the dry and wet bulb temperatures and wet bulb negative pressure; measure the flue gas temperature, atmospheric pressure and exhaust pipe diameter; measure the flue gas dynamic and static pressure and other condition parameters. (3) Determine the constant speed sampling flow rate and the diameter of the sampling nozzle. (4) Install the sampling nozzle and filter cartridge. When installing the filter cartridge, be careful to pour the filter cartridge directly from the polytetrafluoroethylene sleeve into the sampling head, and pay special attention not to contaminate the surface of the filter cartridge.
(5) Place the sampling tube into the flue and close the sampling hole. (6) Set the sampling time and turn on the machine.
GB 18483-2001
(7) Record or print the cumulative volume, sampling flow rate, gauge negative pressure, temperature and sampling time before and after sampling. Record the filter cartridge number. (8) The oil fume sampler collects oil fume.
A.4.2 Sample storage: The filter cartridge that collects oil fume should be immediately transferred to the polytetrafluoroethylene cleaning cup and the cup lid should be tightly closed; if the sample cannot be measured within 24 hours, it can be stored in the refrigerator (≤4°C) for 7 days. A.5 Test conditions
A, 5.1 After cleaning, the filter cartridge should be placed in a ventilated and dust-free place to dry; A.5.2 Before and after sampling, ensure that no other oily items contaminate the filter cartridge. A.6 Sample determination steps
(1) Soak the sampled filter cartridge in 12mL of redistilled carbon tetrafluoride solvent in a polytetrafluoroethylene cleaning cup and cover the cleaning cup lid; (2) Place the cleaning cup in an ultrasonic instrument and perform ultrasonic cleaning for 10 minutes; (3) Transfer the cleaning solution to a 25mL colorimetric tube; (4) Add 6mL of carbon tetrachloride to the cleaning cup and perform ultrasonic cleaning for 5 minutes; (5) Transfer the cleaning solution to the above 25mL colorimetric tube; (6) Use a small amount of carbon tetrachloride to clean the filter cartridge and polytetrafluoroethylene cup twice, and then clean them together. Transfer to the above 25mL colorimetric tube, add carbon tetrachloride and dilute to the scale mark,
(7) Infrared spectrophotometry: Preheat the infrared measuring instrument for more than 1h before measurement, adjust the zero point and full scale, and fix a set of correction coefficients;
(8) Preparation of standard series: Accurately weigh 1g of the corresponding edible oil standard sample that has been refluxed on a balance with an accuracy of one hundred thousandths into a 50mL volumetric flask, and dilute to the scale with analytical pure carbon tetrachloride after redistillation (control the temperature at 70-74°C) to obtain a high concentration standard solution A. Take 1.00mL of solution A in a 50mL volumetric flask and dilute to the scale with the above carbon tetrachloride to obtain the standard intermediate solution B. Transfer a certain amount of solution B to a 25mL volumetric flask and dilute to the scale with carbon tetrafluoride to prepare a standard series (concentration range 0-60mg/L). (9) Sample determination: Soak the sampling filter in the polytetrafluoroethylene cup with an appropriate amount of carbon tetrachloride, cover and tighten the cup cover, place the cup on an ultrasonicator for cleaning for 5 minutes, pour the cleaning solution into a 25mL colorimetric tube, and then use an appropriate amount of carbon tetrachloride to clean the filter twice, transfer the cleaning solution into the colorimetric tube, and dilute to the scale to obtain the sample solution. Place the sample solution in a 4cm colorimetric dish and perform the infrared spectrometry test. A.7 Result calculation
A.7.1 Formula for calculating the efficiency of oil fume treatment
See Appendix B and Section 3.7 of the standard text.
A.7.2 Formula for calculating the concentration of oil fume emissions
Where; C measured oil fume emission concentration, mg/m; Cm = inlet × V/1 000
C luxury liquid——oil fume concentration of filter cleaning liquid, mg/L; V——volume of filter cleaning liquid diluted to volume, mL; V. ——Dry flue gas sampling volume under standard conditions, the calculation method is based on GB/T161571996, m2. (A.1)
GB18483-2001
Measurement accuracy: ±0.02mg/m;
Reproducibility: CV%≤1.8;
Working temperature range: 0~～100℃;
Oil fume collection efficiency: ≥95%;
Appendix B
(Standard Appendix)
Oil fume sampler technical specifications
Dimensions: filter length 56.00±0.05mm; filter diameter 17.00±0.05mm;
Power supply voltage: 220V.
Appendix C
(Appendix to the standard)
Method for determining the oil fume removal efficiency
The oil fume removal efficiency determination of oil fume purification facilities is divided into two cases: (1) For oil fume purification facilities installed in the oil fume exhaust duct, the oil fume removal efficiency can be calculated according to the formula in 3.6 of the standard text by simultaneously measuring the oil fume emission concentration and air volume before and after purification. (2) For purification facilities installed on the exhaust hood, it is necessary to determine a stable smoke source before conducting the efficiency test, and then measure the oil fume emission concentration and air volume when and without the purification facility installed, and then calculate the oil fume removal efficiency according to the formula in 3.6 of the standard text. 33200mL is diluted to scale with the above carbon tetrachloride in a 50mL volumetric flask to obtain standard intermediate solution B. A certain amount of solution B is transferred to a 25mL volumetric flask and diluted to scale with carbon tetrafluoride to prepare a standard series (concentration range 0~60mg/L). (9) Sample determination: Soak the sampling filter in the polytetrafluoroethylene cup with an appropriate amount of carbon tetrachloride, cover and tighten the cup cover, place the cup on an ultrasonic device for cleaning for 5 minutes, pour the cleaning solution into a 25mL colorimetric tube, and then clean the filter twice with an appropriate amount of carbon tetrachloride, transfer the cleaning solution to the colorimetric tube, and dilute to scale to obtain the sample solution. Place the sample solution in a 4cm colorimetric dish and perform the infrared spectrophotometry test. A.7 Result calculation
A.7.1 Fume treatment efficiency calculation formula
See Appendix B and Section 3.7 in the standard text.
A.7.2 Calculation formula for oil fume emission concentration
Wherein; C measured oil fume emission concentration, mg/m; Cm = inlet × V/1 000
C luxury liquid——oil fume concentration of filter cleaning liquid, mg/L; V——diluted volume of filter cleaning liquid, mL; V.——dry flue gas sampling volume under standard conditions, the calculation method of which refers to GB/T161571996, m2. (A.1)
GB18483-2001
Measurement accuracy: ±0.02mg/m;
Reproducibility: CV%≤1.8;
Working temperature range: 0~～100℃;
Oil fume collection efficiency: ≥95%;
Appendix B
(Appendix to the standard)
Technical specifications of oil fume sampler
External dimensions: filter cartridge length 56.00±0.05mm; filter cartridge diameter 17.00±0.05mm;
Power supply voltage: 220V.
Appendix C
(Appendix to the standard)
Method for determining the oil fume removal efficiency
The oil fume removal efficiency determination of oil fume purification facilities is divided into two cases: (1) For oil fume purification facilities installed in the oil fume exhaust duct, the oil fume removal efficiency can be calculated according to the formula in 3.6 of the standard text by simultaneously measuring the oil fume emission concentration and air volume before and after purification. (2) For purification facilities installed on the exhaust hood, it is necessary to determine a stable smoke source before conducting the efficiency test, and then measure the oil fume emission concentration and air volume when and without the purification facility installed, and then calculate the oil fume removal efficiency according to the formula in 3.6 of the standard text. 33200mL is diluted to scale with the above carbon tetrachloride in a 50mL volumetric flask to obtain standard intermediate solution B. A certain amount of solution B is transferred to a 25mL volumetric flask and diluted to scale with carbon tetrafluoride to prepare a standard series (concentration range 0~60mg/L). (9) Sample determination: Soak the sampling filter in the polytetrafluoroethylene cup with an appropriate amount of carbon tetrachloride, cover and tighten the cup cover, place the cup on an ultrasonic device for cleaning for 5 minutes, pour the cleaning solution into a 25mL colorimetric tube, and then clean the filter twice with an appropriate amount of carbon tetrachloride, transfer the cleaning solution to the colorimetric tube, and dilute to scale to obtain the sample solution. Place the sample solution in a 4cm colorimetric dish and perform the infrared spectrophotometry test. A.7 Result calculation
A.7.1 Fume treatment efficiency calculation formula
See Appendix B and Section 3.7 in the standard text.
A.7.2 Calculation formula for oil fume emission concentration
Wherein; C measured oil fume emission concentration, mg/m; Cm = inlet × V/1 000
C luxury liquid——oil fume concentration of filter cleaning liquid, mg/L; V——diluted volume of filter cleaning liquid, mL; V.——dry flue gas sampling volume under standard conditions, the calculation method of which refers to GB/T161571996, m2. (A.1)
GB18483-2001
Measurement accuracy: ±0.02mg/m;
Reproducibility: CV%≤1.8;
Working temperature range: 0~～100℃;
Oil fume collection efficiency: ≥95%;
Appendix B
(Appendix to the standard)
Technical specifications of oil fume sampler
External dimensions: filter cartridge length 56.00±0.05mm; filter cartridge diameter 17.00±0.05mm;
Power supply voltage: 220V.
Appendix C
(Appendix to the standard)
Method for determining the oil fume removal efficiency
The oil fume removal efficiency determination of oil fume purification facilities is divided into two cases: (1) For oil fume purification facilities installed in the oil fume exhaust duct, the oil fume removal efficiency can be calculated according to the formula in 3.6 of the standard text by simultaneously measuring the oil fume emission concentration and air volume before and after purification. (2) For purification facilities installed on the exhaust hood, it is necessary to determine a stable smoke source before conducting the efficiency test, and then measure the oil fume emission concentration and air volume when and without the purification facility installed, and then calculate the oil fume removal efficiency according to the formula in 3.6 of the standard text. 332
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