Technical requirements and test specifications for oil fume purification equipment in the catering industry
Time：2020-06-04 20:08 Author：Publicity Center
1-range
This standard specifies the technical requirements, testing techniques and inspection rules for the removal efficiency and other performance of cooking smoke purification equipment in the catering industry.
This standard is suitable for testing the removal efficiency and other performance of oil fume purification equipment generated during cooking and video production, and is applicable to oil fume purification equipment whose processing air volume is 2000m³/h~20000m³/h.
2-Normative reference
The provisions contained in the following standards constitute the provisions referenced in this standard.
GWPB 5——200000 Flue Gas Emission Standard for Food and Beverage Industry
GB/T 16157 Sampling method for determining particulate matter and gaseous pollutants from stationary source exhaust gas
GB 191 Graphical marking of packaging, storage and transportation
GB/T 6388 Shipping and receiving markings for shipping packages
GB/T 9969.1 Instructions for using industrial products
GB/T 13306 label
3-Terms and Definitions
The following terms and definitions apply to HJ/T 62
3.1-Standard status
Refers to the state when the temperature is 273K and the pressure is 101325 pa. The concentration values and air volumes specified in this standard are dry flue gas values under standard conditions.
3.2-Cooking smoke
It refers to the mixture of volatile oils, organic matter, thermal oxidation and thermal cracking produced during food cooking and food production and processing.
3.3-Cooking smoke control equipment
Refers to equipment that purifies petroleum fumes generated during cooking and food production.
3.4- Flue gas removal efficiency
It refers to the percentage of the quality of petroleum fumes processed by the catering industry through purification equipment, compared with the quality of petroleum fumes before treatment.
3.5-Mechanical flue gas purification equipment
It refers to purification equipment that eliminates oil fumes through filtration, inertial collision, adsorption or other mechanical principles.
3.6-Wet smoke purification equipment
It refers to purification equipment that uses liquid absorption principles such as water film, spray and impact to remove oil fumes.
3.7-Electrostatic flue gas purification equipment
It refers to purification equipment that uses electrostatic principles to remove oil fumes.
3.8-Composite oil flue gas purification equipment
4-Technical requirements
4.1-Basic requirements
4.1.1- At the rated air volume, the body resistance of wet flue gas purification equipment and electrostatic flue gas purification equipment should be less than 300pa, and the body resistance of mechanical flue gas purification equipment and composite smoke purification equipment should be less than 600pa.
4.1.2- Oily dirt and wastewater separated and collected must not be discharged directly to cause secondary pollution. Solid waste (such as filter material replaced by mechanical smoke purification equipment) should be processed centrally and should not cause secondary contamination.
4.1.3 - Electrostatic flue gas purification equipment should have eye-catching safety warnings and reliable grounding to ensure personal and equipment safety.
4.1.4-The ground resistance of the electrical control box should be less than 2Ω.
4.1.5-Have complete technical documents, including design instructions, drawings, company standards, etc.
4.1.6-The appearance of the product should be smooth and clean to facilitate installation, care and maintenance.
4.2-Technical requirements for testing
4.2.1 - Under laboratory test conditions and under rated processing air volume conditions, the oil fume removal efficiency of the oil fume purification equipment shall comply with the requirements of Table 1. For removal efficiency testing of equipment less than 1 year old, the test values should be corrected according to Table 1 by multiplying the operating time correction factor K.
Minimum removal efficiency limit of oil fume purification equipment
4.2.2 - Under normal conditions of use, the continuous operation time of the equipment shall not be less than 1 year.
4.2.3 - The removal efficiency of petroleum flue gas purification equipment that has been in operation for more than 1 year shall meet the minimum removal efficiency requirements in Table 1.
4.2.4-The insulation resistance between the two plates of the electrostatic flue gas purification equipment shall not be less than 50mΩ.
4.2.5-The performance of the wet smoke purification equipment is good, and the moisture content of the flue gas at the outlet of the exhaust pipe is less than 8%.
4.2.6-The petroleum flue gas purification system should be in good order and the air leakage rate of the equipment itself should be less than 5%.
5-Detection system and test methods
5.1.1-Ventilation pipe connection system
As shown in Figure 1, the ventilation pipe connection system includes oil fume purification equipment, fans, connecting ducts, sampling holes and air volume regulating valves. The inlet and outlet air connection pipes should be 4.5 times the diameter (or equivalent diameter). Sampling holes are set to 3 times the downstream diameter (or equivalent diameter) of elbows, reducers and other pipe fittings. For rectangular pipes, the equivalent diameter d = 2ab/(a+b), where a and b are the side lengths. The layout of sampling points should be carried out in accordance with Chapter 7 of GB/T 16157.
5.1.2 - Flue gas generating equipment
The petroleum smoke generating device simulates the actual smoke components by quantitatively adding edible vegetable oil and water to the heated melt to make it smoke, splash and evaporate, thereby continuously and stably generating oil smoke. The equipment mainly consists of two parts: an adjustable oil and water quantitative addition system and an electric heating temperature control system, as shown in Figure 2. The oil fume generating device should ensure that the average oil fume concentration change is less than 5% within 10 minutes. The oil fume generation device can adjust the amount of oil fume generated to meet different gas processing capacity and concentration requirements. The detection reference concentration is 10mg/m³.
5.2 Test methods
5.2.1 - Temperature measurement shall be by glass thermometer or thermocouple with an accuracy of not less than 2.5%.
5.2.2 - Using standard pitot tubes or S-type pitot tubes, inclined tube pressure gauges, U-type pressure gauges and barometric pressure gauges, speed, flow rate and pressure should be carried out in accordance with Chapter 7 of GB/T 16157. Other calibrated measuring instruments with the same accuracy may also be used.
5.2.3 - Insulation resistance: Measure the resistance between the two rods of the electric field body using a class 2.5 2500V megohmmeter. Ground resistance: Use a class 2.5 multimeter to measure the resistance between the metal case and the ground bolt.
5.2.4 - Various equipment, tools and detection methods for oil fume sampling and analysis should be carried out in accordance with the provisions of Appendix A of GWPB 5-2000.
5.2.5 - The appearance of smoke purification equipment should be checked by visual inspection.
5.2.6-The moisture content of the flue gas at the outlet of the wet flue gas purification equipment shall be determined according to the provisions of Chapter 5 of GB/T 16157. It can also be determined using a dry albumen thermometer or condenser tube method when using a heated sampling tube.
5.2.7 Calculation of removal efficiency of oil fume purification equipment
p = (1-(C×Q-C×Q)/(C×Q))×100%;
P: Petroleum flue gas purification and removal efficiency (%);
C: Oil fume concentration before purification equipment (mg/m³);
Question: The flue gas flow rate in front of the purification equipment (m³/h);
Cafe oil smoke concentration after purification equipment (mg/m³);
Question: The flue gas flow after the purification equipment (m³/h);
5.2.8 - Determination of removal efficiency of flue gas purification equipment under laboratory conditions
The oil fume purification equipment in the test system runs for 24 hours with a rated air volume and a simulated oil fume concentration of 50 mg/m³. Please adjust the smoke volume so that the simulated oil fume concentration is 10 mg/m³ (±2 mg/m³) to measure the oil and gas concentration and air volume, and equalize according to the inlet and sales volume of the equipment to 5. Correction factor. The results of two parallel measurements are averaged and reported.
The air volume on the detection system was changed to 80% and 120% of the rated air volume on the nameplate, and the simulated flue gas concentration was adjusted accordingly to measure the flue gas removal efficiency of the flue gas purification equipment.
The test items and results of laboratory tests should comply with the requirements in Table 2.
font-size: 16px; background-color: #ffffff;">5.2.9-Performance test on devices that have been running for more than 1 yearThe manufacturer of petroleum fume purification equipment should provide a list of five or more users who have used it for more than one year, and the approved petroleum fume purification equipment testing agency should select two units for operation time investigation and use the oil fume generator for testing. Test items and results should comply with the requirements of Table 2.
Requirements for test items and oil fume purification equipment
| serial number | Check items | Laboratory test items | in - website test project | Factory - Exit Check Item | Technical requirements |
|---|---|---|---|---|---|
| 1 | Technical documents | Yes | No | No | Drawings, design specifications and corporate standards should be completed |
| 2 | Product appearance | Yes | Yes | Yes | It should be smooth and clean to facilitate installation, maintenance and repairs. Electrostatic purification equipment should have obvious safety warnings. |
| 3 | Nameplate | Yes | Yes | Yes | Comply with GB/T 13306 |
| 4 | instruction manual | Yes | No | Yes | Comply with GB/T 9969 and indicate the maintenance cycle and service life of the equipment |
| 5 | Purifier body resistance | Yes | Yes | No | Wet - type and electrostatic - type ≤ 300pa; mechanical - type and composite - type ≤ 600pa |
| 6 | Control box ground resistance | Yes | Yes | Yes | <2Ω |
| 7 | Insulation resistance between electrodes of electrostatic purification equipment | Yes | Yes | Yes | ≥50mΩ |
| 8 | Flue gas moisture content of wet gas - Xingxing oil fume purification equipment | Yes | Yes | No | ＜8％ |
| 9 | Air leakage rate of equipment body | Yes | Yes | No | 5％ |
| 10 | normal operating hours | No | Yes |
6-Test regulations
6.1-Check categories
Product inspection is divided into factory inspection and type inspection.
6.2-Factory inspection
Factory inspection items and results should comply with the requirements in Table 2.
6.3-Type checking
6.3.1 - Products shall be type checked when any of the following conditions apply:
a) New product identification;
b) Major changes in product materials or production processes will affect product performance;
c) Resume production after two consecutive years of suspension;
d) Regular production for three years;
e) The national quality inspection agency has put forward inspection requirements.
6.3.2-Inspection items
When conducting a general type inspection, the inspection items should include all laboratory tests or field tests specified in Table 2.
6.3.3-Sampling methods
Random sampling shall be carried out from no less than two production batches and the sampling quantity shall be no less than 2 units.
6.3.4-After inspection, fill in the "Inspection Report", its content format refers to Table 3, and then attach the test data report.
6.4-Decision rules
6.4.1 - Type inspection results shall comply with the relevant provisions of Chapter 4.
6.4.2 - If two of the test items 1 to 6 listed in Table 2 fail or any test items 7 to 13 fail, a double sampling inspection is required. If both fail, the product is considered unrestricted.
6.5-Other provisions
6.5.1 - For the same type of equipment with different specifications, the test results are valid separately according to the rated air volume of the test equipment, respectively large, medium and small. Test results for large equipment are valid within a range of no more than 150% of the rated air volume of the test equipment.
6.5.2 - For petroleum flue gas purification equipment with process air volumes greater than 20,000 m3/h, separate project acceptance and routine monitoring of pollution sources shall be carried out.
7-Use labels and instructions
7.1-Signage
7.1.1-Each product must have a label complying with GB/T 13306.
7.1.2-Product labels should include the following main contents:
a) Product name, specifications and models;
b) Air volume, purity efficiency, maximum inlet flue gas concentration and equipment resistance;
c) Manufacturer’s name, address and contact information;
D) The production date and product number of the product;
7.2-Instructions for use
The product must be equipped with an instruction manual, which should comply with the requirements of Chapter 1 of GB/T 9969. It must specify the requirements for equipment installation, transportation and maintenance, as well as the maintenance period and service life of the equipment.
8-Logo packaging shipping storage
The marking, packaging, transportation and storage of products shall be carried out by each production unit according to the characteristics of the product type in accordance with the relevant provisions of GB/T 6388 and GB 191.
Check the contents of the report
| Product name | trademark | |||
| Check unit | Scale type | big, medium, small | ||
| manufacturing unit | canonical model | |||
| Sampling location | sampling time | |||
| Sample quantity | sampler | |||
| Sampling basics | Original number or production date | |||
| Check items | Technical documentation, product appearance, nameplate, instruction manual body resistance, insulation resistance between electrodes, control box ground resistance moisture moisture content of flue gas, body air leakage rate, removal efficiency | |||
| Main musical instruments used | ||||
| Check conclusion |
Special seal for inspection year month | |||
| Comment | ||||