JB/T 6427-2001 Pressure swing adsorption oxygen and nitrogen production equipment
Some standard content:
ICS71.100.20
J76
JB
Machinery Industry Standard of the People's Republic of China
JB/T6427-2001
Pressure swing adsorption oxygen and nitrogen production equipment
PSAoxygenandnitrogenplants
Released on 2001-12-29
China Machinery Industry Federation
Released
Implemented on 2002-06-01
JB /T6427-2001
Foreword
This standard is a revision of JB/T6427-1992 "Adsorption Oxygen and Nitrogen Generation Equipment". Compared with JB6427-1992, the main technical content of this standard has changed as follows: the name of the standard has been changed from "Adsorption Oxygen and Nitrogen Generation Equipment" to "Pressure Swing Adsorption Oxygen and Nitrogen Generation Equipment"; 1. Product specifications: Oxygen production has changed from 50m/ h increased to 3000m/h, nitrogen production increased from 200m/h to 3000m/h; oxygen generating equipment added product specifications of 100, 200, 300, 500, 600, 800, 1000, 1200, 1500, 3000 and other products. Nitrogen generating equipment has added product specifications of 300, 500, 600, 800, 1000, 1200, 1500, 1800, 2000, 2500, 3000, etc.: The performance indicators of some products have been changed.
This standard replaces JB/T6427-1992 from the date of implementation. This standard is proposed and managed by the Technical Committee for Standardization of Gas Separation and Liquefaction Equipment in the Mechanical Industry. This standard was drafted by: Hangzhou Oxygen Concentrator Group Co., Ltd. The main drafters of this standard: Zhu Daozhen and Fan Tan. This standard was first released in July 1992, and this is the first revision. 1 Scope
Machinery Industry Standard of the People's Republic of China
Pressure swing adsorption oxygen and nitrogen production equipment
PSAoxygen andnitrogen plantsJB/T6427—2001
Replaces JB/T 64271992| |tt||This standard specifies the terminology, product classification and specification technical requirements, test methods, inspection rules and marking, packaging and transportation of pressure swing adsorption oxygen and nitrogen production equipment (hereinafter referred to as "oxygen and nitrogen production equipment") and storage. This standard is applicable to oxygen and nitrogen production equipment that uses molecular sieve pressure swing adsorption method to separate and produce oxygen or nitrogen from the air at normal temperature, with an output of not more than 3000m/h.
Note:
1 The oxygen and hydrogen production in this standard are all in the standard state, that is, the gas yield at 0°C and 0.101MPa (absolute pressure). The pressure value in unit m2 is unless otherwise noted. Except those, all are gauge pressure values. 2 Referenced standards
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below. GB 1501998
GB 12348—1990
GB 50274—1998
GB 50275—1998
GB/T 2888—1991
GB/T 3863— 1995
GB/T 3864~1996
GB/T4830—1984
GB/T4980—1985
GB/T 13306—1991
GB/ T13384—1992
GBJ 16—1987
JB/T 5902—2001
JB/T 6896—1993
JB/T7263—1994
JB /T8058—1996
YY/T 0298—1998
Steel pressure vessels
Noise standards for industrial enterprise boundaries
Refrigeration equipment, air separation equipment installation engineering construction and Acceptance Specifications Compressor, Fan, Pump Installation Project Construction and Acceptance Specifications Fans and Roots Blower Noise Measurement Methods Industrial Oxygen
T Industry Nitrogen
Industrial Automation Instruments Air Source Pressure Range and Quality Volumetric Compression Determination of machine noise sound power level - Engineering method signage
General technical conditions for mechanical and electrical product packaging
Fire protection specifications for building design
Technical conditions for oxygen piping for air separation equipment Surface cleanliness of air separation equipment
Technical conditions for acceptance of 13X molecular sieves for air separation equipment Technical conditions for acceptance of activated alumina for air separation equipment Approved for implementation on 2002-06-01
3 terms
3.1 Swing adsorption method
JB/T6427-2001
Under isothermal conditions, pressure adsorption, pressure reduction Desorption cycle working method. 3.2 Pressure swing adsorption oxygen and nitrogen production
Use the pressure swing adsorption method to separate and produce oxygen or nitrogen from the air. Product classification and specifications
Product classification and specifications are as specified in Table 1.
Table
Product classification
Fluorine making equipment
Nitrogen making equipment
Specifications (output)
510.25, 50.100.200, 300 ,500,,1200,1500,3000
600,800.
1000.
m'/h
5,10,20,50,100.150.200,300., 500.600,800,1000,1200,1500,1800,2000.25003000
Note: The product specifications in the table can be increased according to user requirements. 5 Technical requirements bzxZ.net
5.1 Design conditions
5.1.1 Atmospheric conditions
Air pressure: 0.098MPa (absolute pressure)
Temperature: 0℃;
Relative Humidity: 75%.
5.1.2 Raw air
Mechanical impurities: <30mg/mt
CO,: ≤350 ×10-*;
C,H,: ≤0.5× 10*;
CnHm;≤30×10-;
Oil content: to 0.01×10-;
Acidic substances: ENOx+SO,+HCI+CI, the sum of ≤ 8×10-. 5.1.3 Cooling water
Inlet water temperature: ≤30℃;
Inlet water pressure: According to the contract:
Even floating matter content: ≤100mg/L: ||tt| |Acidity and alkalinity (pH value): 7-8
Total hardness: ≤3.2mmol/L.
5.1.4 Instrument gas should be clean and dry, and the gas source pressure range and quality should comply with the regulations of GB/T4830. 5.1.5 The power supply shall be as specified in Table 2.
2
Voltage V
6000 or 10000
380
220
Tolerance %
±5|| tt||JB/T64272001
Table 2
Phase
Three-phase
Single-phase
Rate
50 Hz||tt ||Tolerance %
±1
5.1.6 If the design conditions are not consistent with 5.1.1~5.1.5 or additional items need to be added, the user and the supplier shall stipulate them in the contract. . 5.2 Basic product parameters and performance
5.2.1 The recommended product specifications and basic performance parameters of oxygen generating equipment are as specified in Table 3. Table 3
Specifications (output)
mh
10
25
50
100
200||tt ||300
500
600
800
1000
1200
1500
3000
Note
Oxygen purity
%
≥90
Product pressure
MPa
≥0.2
≥0.02| |tt||1 unit oxygen production power consumption refers to the oxygen purity converted to 100% under standard conditions. 2 Start-up time refers to the time required from the complete set of equipment to start up until the product gas reaches purity and output. Unit power consumption
kW·b/m
≤1.5
≤1.4
≤1.2
≤1.1
≤1.0
0.5-0.52
5.2.2 Recommended product specifications and basic performance of hydrogen production equipment The parameters are as specified in Table 4. 5.2.3 If the user has special requirements, the product specifications and basic parameters of oxygen and hydrogen production equipment can be specified in the contract. 5.3 Oxygen and ammonia production equipment should be manufactured according to the drawings and technical documents approved by the manufacturing unit's prescribed procedures. 5.4 The supporting compressors, pumps, valves, etc. should comply with the relevant standards or technical documents. Room movement time
min
50
5.5 Pressure vessels should comply with GB150, "Pressure Vessel Safety Technical Supervision Regulations" and relevant standards and regulations. Specifications (output)
m'h
5
10
20
50
100
150|| tt||200
300
500
600
800
1000
1200
1500||tt| |1800
2000
2500
3000
Nitrogen purity
%
99.5
JB/T6427-2001| |tt||Table 4
Product nitrogen pressure
MPa
≥0.6
Unit mouse power consumption
kwh/m
≤0.76
≤0.73
≤0.70
≤0.68
≤0.65
≤0.60
Note: The start-up time refers to the complete set Assume that the start-up time from startup to product gas reaching purity and output is
min
≤40
5.6 Oxygen and nitrogen generating equipment greater than or equal to 1000m'/h The engineering design and installation should not only comply with product design requirements, but also comply with GBJ16, GB50274, GB50275 and other standards and relevant regulations. 5.7 The oil vapor content of the air entering the molecular sieve adsorber should generally not be greater than 0.01×10-° (volume), and the total amount of acidic substances in one section should not be greater than 8×10*, SO, the amount is 1×10-(volume). 5.8 The oxygen pipeline of oxygen generating equipment should comply with the regulations of JB/T5902. 5.9 The surface of parts in contact with oxygen should be clean and degreased. The surface grease residue plate after treatment should comply with the provisions of JB/T6896. 5.10 The acceptance technical conditions of molecular sieves and activated aluminum cyanide used in oxygen and nitrogen production equipment shall be in accordance with JB /T7263, JB/T8058 or the provisions of the contract.
The paint surface of oxygen and nitrogen generating equipment should be bright and beautiful, and the paint film should be durable; the paint of pressure vessels should comply with the relevant standards 5. 11
.
The manufacturer should provide the user with wearing parts for more than one year or as stipulated in the contract. 5.12
Under the condition that the user abides by the provisions of the product instruction manual, within 18 months from the date of shipment from the manufacturer, the actual operating time of the oxygen and nitrogen generating equipment shall not exceed one day. 5.13
If the product is damaged or does not work properly due to manufacturing quality issues, the manufacturer shall be responsible for replacement (excluding wearing parts) or repair. | |tt | 1)
den
—The total number of instruments.
(1)
5.15 Oxygen and nitrogen making equipment should be rust-proof and mildew-proof before leaving the factory. The anti-rust period shall not be less than - one year. When the storage period exceeds the specified anti-rust period, it should be reinstalled. For anti-rust treatment.
5.16 For the operation of complete sets of equipment, mechanics and instruments must pass the training and examination before they can start operating and be familiar with the performance and structure of the equipment.
5.17 Users should formulate safe use procedures based on the requirements of the actual use process, establish regular records, regular maintenance and inspection systems, spare parts management systems, and fault handling reporting systems. 5.18 In addition to complying with the provisions of this standard, oxygen generating equipment used for medical treatment should also comply with the provisions of YYT0298. 6 Inspection or test methods
6.1 Inspection or test methods for the final product of oxygen and nitrogen production equipment should generally be shipped after passing the test in the manufacturer or as stipulated in the contract. 6.2 The test must be conducted under stable working conditions. Due to limited conditions, when the test working conditions deviate from the design state specified in this standard, the test results should be converted.
6.3 Testing instruments and meters
6.3.1 Testing instruments and meters must be certified by the Metrology Department. 6.3.2 Temperature, pressure, flow, and rotational speed measuring instruments and accuracy requirements are specified in Table 5. Table 5
Instrument name
Glass thermometer
Calendar meter
Rotor flow meter
Snail flow meter
Orifice flow rate Gauge
Barometer
U-shaped tube body pressure gauge
Tachometer
Note: During factory inspection, the accuracy of the pressure gauge is level 1.5. 6.3.3 The instruments used for product oxygen and nitrogen purity analysis should comply with the requirements in Table 6. Graduation or accuracy
±0.5%; graduation value ≤0.5%
Grade 1.5
Grade 1.5
±66.6Pa
Grade 1.5|| tt | ||Table 6
6.3.4 Instruments and meters used for power measurement should comply with the requirements in Table 7. Table 7
Instrument name
Ammeter
voltmeter
wattmeter
current transformer
watt-hour meter
6.3.5 A sound level meter is used for operating sound measurement, and its accuracy is ±1dB (A). 6.4 Measurement method and result calculation
6.4.1 Flow measurement
Graduation or accuracy
Minimum graduation 0.1%0,
Minimum graduation ≤ 0.2%N,
level 5
precision
degree
0.5
to
0.5
1.0
flow measurement The pipe joints of all meter pipes should be checked before use to ensure there are no leaks or blockages. 6.4.1.1
The flow meter should be installed at the outlet of the balancer of the adsorption system. 6.4.1.2
Oxygen and nitrogen flow connection type (2) of dry products Correction: 6.4.1.3
Q=0,
pT
p,7|| tt||In the formula: the corrected drying gas flow rate under the design state, m\/h: Q, - the actual measured gas flow rate, m/h; P - the actual gas pressure in front of the flow meter, MPa ( Absolute pressure); p
One atmospheric pressure, take p=0.098MPa (absolute pressure); One actual temperature of the gas in front of the flow meter, Kt
T—the atmospheric temperature under the design state, take T -273.15K. 2
6.4.1.4 Use a rotor flowmeter to correct the density of oxygen and nitrogen flow rates of dry products. The correction method shall be in accordance with the instructions of the rotor flowmeter.
When the atmospheric conditions do not match the design conditions, the gas flow rate is converted according to equation (3): 6.4.1.5
olp.-oP)
Q.=9
(p: -)T.
In the formula: O - gas flow rate under design conditions, m/h (standard state); Po
- atmospheric force under design conditions: MPa (absolute pressure): P - actual Atmospheric pressure under conditions, MPa (absolute pressure); - Relative humidity under design conditions, %:
P
- Relative humidity under actual conditions, %;
(3 )
P,o
JB/T6427-2001
Saturated water vapor pressure in the atmosphere under design conditions, MPa (absolute pressure) Pa - Saturated water in the atmosphere under actual conditions Vapor pressure, MPa (absolute pressure): T. - Atmospheric temperature under design conditions, K; T - Atmospheric temperature under actual conditions, K. 6.4.2 Purity measurement
6.4.2.1 The purity sampling point should be on the pipeline where the gas leaves the balancer of the adsorption system 6.4.2.2. The oxygen purity is measured according to the provisions of GB/T3863 and with an analytical instrument calibrated with standard gas. 6.4.2.3 Nitrogen purity shall be measured according to the provisions of GB/T3864 or using an oxidation oxygen analyzer. 6.4.3 Power measurement
6.4.3.1 Measurement of compressor input power
6.4.3.1.1 The motor input power is measured at the motor terminal, and the input power is according to Equation (4) Calculation: N-./3JUcos@/1000.
In the formula: N
Motor input power, kW:
I——Input current, A;||tt| |U——Input voltage, V;
cos@o
Power factor (provided by the motor manufacturer). 6.4.3.1.2 Compressor input power is calculated according to formula (5): N=Nn.
In the formula: N compressor input power, kW
n
Motor efficiency .
6.4.3.2 Total power (excluding compressed oxygen and compressed nitrogen power) is calculated according to formula (6): EN=N,+N
where: ZN total power, kw; ||tt ||N——Auxiliary engine power (including precooling unit power, instrument gas compressor power, vacuum pump power), kW. 6.4.4 The gas power consumption per unit product is calculated according to formula (7): where: N. —Power consumption per unit product gas, kW·h/m2: Product gas purity, %.
6.4.5 Noise measurement
N
MN
Ooy
6.4.5.1 Noise measurement position is in front of the main operating position of oxygen and nitrogen production equipment The horizontal distance is 1m and the height from the ground is 1.5m. 6.4.5.2 Noise measurement method shall be in accordance with the provisions of GB/T4980. 6.4.5.3 The noise standards for gas emissions from pressure swing adsorption oxygen and nitrogen production equipment shall comply with the provisions of GB12348. 6.4.5.4 The noise measurement method of turbine compressors and Roots blowers shall be in accordance with the provisions of GB/T2888. 6.4.6 Measurement data
6.4.6.1 Measure power and noise once every 2 hours, and take the average of three consecutive times as the measurement data. 6.4.6.2 The flow rate and purity are measured once every hour, and the average value of 5 consecutive times is taken as the measurement data. (4)
5)
(6)
(7)
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