This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of purifiers for small air separation equipment. JB/T 6429-1992 Purifiers for small air separation equipment JB/T6429-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 6429-1992
Purifiers for small air separation equipment
Published on July 20, 1992
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on January 1, 1993
Mechanical Industry Standard of the People's Republic of China
Purifiers for small air separation equipment
Subject content and scope of application
JB/T6429-1992
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of purifiers for small air separation equipment.
This standard applies to air separation equipment with an oxygen output of less than 1000m/h, which uses cryogenic separation to produce oxygen and nitrogen, and air purifiers (hereinafter referred to as "purifiers") used in conjunction with air separation equipment that uses cryogenic separation to produce liquid oxygen, liquid nitrogen, and pure nitrogen products. Note: The gas output refers to the gas volume under standard conditions, i.e., the gas volume under 0°C and 101.325kPa. 2
Referenced Standards
GB2624
GB/T13306
GB/T13384
JB2536
ZB J76 015.1
ZB J76 015.2
Technical requirements
Steel pressure vessels
Flow measurement throttling device
Determination of trace moisture in gas
Electrolysis method
Determination of trace moisture in gas
Dew point method
General technical conditions for packaging of electromechanical products
Painting, packaging and transportation of pressure vessels
Technical conditions for small air separation equipment
The design and use conditions of performance test methods of small air separation equipment shall comply with the provisions of Article 4.1 of ZBJ76015.1. The main performance parameters are shown in Table 1.
Air separation Air separation equipment
Operation cycle\
Air volume
Not less than
Not more than
(volume)
Note: 1) The provisions of the operation cycle of air separation equipment can be found in ZBJ76015.1. Carbon dioxide content
Regeneration resistance
2) When a precooler is configured before the purifier and the inlet temperature of the adsorption cylinder is 5~10℃, the regeneration power consumption is calculated at 65%. Approved by the Ministry of Machinery and Electronics Industry on July 20, 1992 Regeneration power consumption 2)
kWh/m2
Implementation on January 1, 1993
JB/T 64291992
3.3 The purifier shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents (or contracts) approved by the prescribed procedures. 3.4 The pressure vessels and safety devices in the purifier shall comply with the "Technical Supervision Regulations for Pressure Vessel Safety" and GB150 and other relevant standards.
3.5 The supporting parts shall comply with the design requirements of the drawings and the provisions of relevant standards. 3.6 The adsorbent used in the purifier shall comply with the provisions of Appendix A (supplement) and Appendix A of ZBJ76015.1. The adsorbent manufacturer shall provide quality assurance when supplying.
3.7 The regeneration of the adsorbent shall be carried out according to the design requirements. 3.8 The paint on the outer surface shall be bright and beautiful, and the paint color shall comply with the provisions of the relevant standards and drawings. 3.9 Purifier air tightness test: the test pressure is the design pressure, the test time is 30 minutes, and no leakage is allowed. 3.10 Under the condition that the user complies with the provisions of the product manual, if the purifier is damaged or cannot work normally due to poor manufacturing quality within 18 months from the date of shipment from the manufacturer and within 12 months from the date of use, the manufacturer shall be responsible for replacement (excluding wearing parts) or repair.
1 The purifier is supplied to the user together with: 3.11
Electronic control and instrument control equipment;
b. Other necessary auxiliary equipment;
A full set of spare parts for wearing parts;
d. Pipes and valves belonging to the purifier;
e. Equipment specified in the contract.
4 Test method
4.1 The performance test of the purifier should be carried out in the manufacturer, and can be carried out on site when conditions are limited. 4.2 The test conditions of the purifier performance test should be consistent with the conditions specified in the design. The allowable fluctuation range of the operating point parameters during the test is as specified in Table 2.
Operating point parametersbZxz.net
Adsorption pressure
Adsorption temperature
Processed air volume, regeneration gas volume
Power supply frequency
Allowed fluctuation range
±5% (220V or 380V)
When the test conditions deviate from the provisions of this standard or deviate from the design conditions due to conditions, the test results should be corrected. 4.3
4.4 The test must be carried out under stable conditions, and the test time is one switching cycle. 4.5 The instruments and meters used for the test should be qualified by the metrology department and within the validity period. 4.6 Requirements for measuring instruments and meters.
Requirements for temperature and pressure measuring instruments are shown in Table 3. 4.6.2
Instrument name
Glass thermometer
Platinum resistance thermometer
(pt100)
Pressure gauge
U-type differential pressure gauge
Flow differential pressure transmitter
Requirements for power measuring instruments are shown in Table 4.
Instrument name
Ammeter
Voltmeter
Wattmeter
Current transformer
JB/T6429—1992
±0.5℃; graduation value ≤0.5℃
Grade A (0.15+0.002|t|~0.15+0.002|t|) Grade 0.4
Full scale value ±1.5%, minimum graduation 10~40PaInner diameter of connecting pipe ≥6mm, inner diameter of connecting pipe at vacuum ≥10mmcalibrated by ±0.5% U-type differential pressure gauge
Accuracy (grade)
The requirements for measuring instruments for moisture and carbon dioxide content in purified air are shown in Table 5. Table 5
Instrument name
Moisture analyzer
Carbon dioxide analyzer
Measurement method and calculation of results
Measurement of processed air volume and regeneration gas volume
See GB5832.1 and GB5832.2
Before measurement, all the joints of the instrument pipelines should be checked for any leakage or blockage. The installation and use of the flow measurement device shall be in accordance with the provisions of GB2624. The rotor flow meter can also be used for measurement with an accuracy of 2.5. The throttling device for processed air volume is installed on the pipeline of the air outlet of the purifier. The throttling device for regeneration gas volume is installed on the stage where the regeneration gas enters the purifier,
on the pipeline.
Where: 9
The flow rate of processed air and regeneration gas can be corrected according to formula ((1).
Corrected gas flow rate (0℃, 101.325kPa), m/h; flow reading of secondary instrument during measurement, m/h; absolute pressure of gas before orifice plate under design conditions, MPa; absolute pressure of gas before orifice plate under working conditions, MPa; temperature of gas before orifice plate under design conditions, K; temperature of gas before orifice plate under working conditions, K. (1)
JB/T 64291992
4.7.1.4 When using a rotor flowmeter to measure flow, if the density of the measured medium is different from the density of the medium used for flow calibration, density correction should be performed.
4.7.2 Measurement of moisture and carbon dioxide content in purified air 4.7.2.1 The sampling point for analyzing moisture and carbon dioxide content should be on the air pipe out of the purifier. 4.7.2.2 The measurement of moisture content shall comply with the provisions of GB5832.1 and GB5832.2. 4.7.2.3 The carbon dioxide content shall be measured using an electrochemical analyzer. 4.7.3 Power measurement and regeneration power consumption
4.7.3.1 The power consumption of the purifier electric heater can be measured using the two-wattmeter method, and its power consumption is calculated according to formula (2): P=P
Where: P:
Electric heating Power consumption of the purifier, kW;
- Actual power of the electric heater, kW:
Effective working time of the electric heater during the purifier working cycle, h; T
Working cycle of the purifier, h.
4.7.3.2 The regeneration power consumption is calculated according to formula (3): P
Regeneration power consumption of the purifier, kWh/m processed air; Where: p—
PPower consumption of the electric heater, kW;
9kAmount of air processed per hour, m/h.
4.7.4 Resistance measurement
4.7.4.1 The sampling point for measuring the regeneration gas resistance should be on the pipelines of the regeneration gas entering and leaving the purifier. 4.7.4.2 The regeneration gas resistance is measured by a U-shaped differential pressure gauge. 4.7.5 Measurement data
4.7.5.1 Flow rate and resistance shall be measured once every hour, and the average value of a switching cycle shall be taken as the measurement data. 4.7.5.2 Power measurement shall be measured once every time the electric heater is turned on and off, and the average value of a switching cycle shall be taken as the measurement data. (2)
4.7.5.3 The moisture and carbon dioxide content shall be measured once every hour, and the content before switching must be measured, and this point shall be taken as the measurement data.
5 Inspection rules
5.1 The purifier shall be inspected and qualified by the inspection department of the manufacturer, and shall be accompanied by a product certificate before it can be shipped. 5.2 The inspection of the purifier is divided into factory inspection and type inspection. The factory inspection of the purifier shall be carried out unit by unit in accordance with the provisions of Article 3.9. The type inspection shall meet the performance indicators and other requirements specified in Article 3.2. Type inspection shall be carried out after accumulating 20 units of the same model, and one unit shall be inspected for every 20 units. Type inspection can be carried out by the user. 6 Marking, packaging, transportation, storage
6.1 Each purifier should have a product nameplate fixed in a conspicuous position. The size and technical requirements of the nameplate shall comply with the provisions of GB/T13306. The purifier nameplate includes:
a. Purifier model;
purifier name;
air volume handled;
maximum working pressure;
factory number;
manufacturing date;
manufacturer name.
JB/T6429-1992
The packaging and transportation of purifiers shall comply with the provisions of JB2536 and GB/T13384. 6.2
The purifier and its ancillary equipment and supporting electrical appliances shall be treated with anti-rust and anti-mildew treatment. Store in a warehouse or covered area. The anti-rust treatment has a validity period of not less than one year. When the storage time exceeds the specified anti-rust period, the anti-rust treatment should be repeated. The following documents should be accompanied by the purifier when it leaves the factory: 6.4
Product certificate;
b. Product manual;
Random drawings (including general drawings and foundation drawings); Pressure vessel quality certificate and completion drawings; Packing list;
Other documents and drawings required by the contract. A1
Activated alumina for purifier (see Table A1). Product
XP type
JB/T6429-1992
Activated alumina for purifier
(supplement)
K,O+Na,o
Hue, shape
Granularity mm
Pore volume cm/g
Specific surface area m/g
Bulk density g/cm
Crushing strength
Abrasion rate %
Water-resistant rate %
Static adsorption value %
Temperature 25℃, relative humidity 60%
Dynamic adsorption value %
Saturated air pressure 0.6MPa (absolute pressure)
Temperature 38℃,
Additional instructions:
This standard is proposed and managed by Hangzhou Oxygen Generator Research Institute. This standard was drafted by Suzhou Oxygen Generator Factory. The main drafters of this standard are Xue, Hao Zhiyuan and Chen Jiming. Quality indicators
White, spherical
9 2-g 5
0.4±0.03
350±20
3~5>100
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