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Low Pressure 99.6% Air Separation Plant Oxygen Generating Machine 250m³/h

Categories Air Separation Plant
Model Number: KDON-250/500
Certification: ISO9001;2008 CE cetificate
Place of Origin: China
MOQ: 1set
Price: negotiation
Payment Terms: T/T or L/C
Supply Ability: 100sets month
Delivery Time: 60working days after received your payment
Packaging Details: Packed in standard export packing
Product Name: Oxygen plant
Application: Separate oxygen from air
Oxygen output: 250 +-5% cube meter per hour
Feature: Long service life low energy consumption
Standard: ISO9001;2008 CE cetificate
purity: 99.6%
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    Low Pressure 99.6% Air Separation Plant Oxygen Generating Machine 250m³/h


    99.6% Air Separation Plant FON- 250-500 Industrial Oxygen Plant With Low Energy Consumption



    1.1 Design basic conditions
    Atmosphere pressure 0.1013Mpa (A)
    Atmosphere tempt. 30℃
    Relative humidity 80%
    O2 contained in air 20.95% O2

    1.2 Cooling water

    Feeding water:Tempt. 30℃)

    Pressure 0.45MPa(G)

    PH value 7~8

    Fouling factor 0.0004m2 ℃.h/Kcal

    Total hardness 100mg/L

    Turbidity 10~30mg/L

    1.3 Earth quake: <6 degree

    1.4 Sea level: 50m

    1.5 Impurity in atmosphere


    CO2 ≤350 ppm
    SO2 ≤0.44 mg/m3
    H2S ≤2.3 mg/m3
    CH4 ≤5.2mg/m3
    C2H2 ≤0.03 ppm
    CnHm(excluding C2H2) ≤5 ppm
    Dust content ≤10mg/m3

    1.5 Power supply
    Low voltage 380V/220V±5%

    AC,3-phase,4-wire
    Frequency 50±0.5Hz

    Loaded power ~220KW(Name plate power, not incl. O2 compressor)


    2. Main technical performance parameters

    2.1 Product output,purity , pressure

    O2 output 250m3/h±5%

    O2 purity ≥99.6%O2

    O2 pressure ~0.034MPa(G)

    N2 output 500m3/h±5%

    N2 purity ≤10ppmO2

    N2 pressure ~0.012 MPa(G)

    Product quantity status(at 0℃,101.325Kpa)

    2.2 Start pressure 0.65MPa(G)

    2.3 Plant operation period(between two defrosting times) 12 months

    2.4 Start time ~24 hours

    2.5 Specific power ~0.65kWh/m3O2(not incl.

    O2 compressor)

    3.Pocess description:

    KDON-250/500 air separation plant is of low pressure process.

    Raw air comes from air, goes through air filter for removal of dust and other mechanical particle and enters non-lub air compressor to be compressed by two stage compressor to approx. 0.65MPa(g).It goes through cooler and enters precooling unit to be cooled to 5~10℃. Then it goes to switch-over MS purifier for removal of moisture, CO2, carbon hydrogen. Purifier consists of two molecular sieve filled vessels. One is in use while anther is under regeneration by waste nitrogen from the cold box and through heater heating.

    After purified, small part of it is used as bearing gas for turbine expander, other enters cold box to be cooled by reflux(pure oxygen, pure nitrogen and waste nitrogen) in main heat exchanger. Part of air is abstracted from the middle part of main heat exchanger and goes to expansion turbine for production of cold. Most of expanded air goes through subcooler which is cooled by oxygen from upper column to be delivered to upper column. Small part of it goes through bypass to waste nitrogen pipe directly and is reheated to go out of the cold box. The other part of air continues to be cooled to near liquid air tempt to lower column.

    In lower column air,air is separated and liquefied as liquid nitrogen and liquid air. Part of liquid nitrogen is abstracted from the top of the lower column. Liquid air after subcooled and throttled is delivered to the middle part of upper column as reflux.

    Product oxygen is abstracted from the lower part of upper column and reheated by expanded air subcooler, main heat exchange. Then it is delivered out of column. Waste nitrogen is abstracted from the upper part of upper column and is reheated in subcooler and main heat exchanger to go out of column. Part of it is used as regeneration gas for MS purifier. Pure nitrogen is abstracted from the top of the upper column and is reheated in liquid air , liquid nitrogen subcooler and main heat exchanger to be delivered out of the column.

    Oxygen out of the distillation column is compressed to customer.

    4. Scope of supply:

    4.1,Air compressor(reciprocating non-lub. ) 1 set

    Manufactory Liuzhou

    Type VW-22/6.5

    Discharge capacity 22m3/min

    Discharge pressure 0.65MPa(G)

    Motor power 120kW

    Cooling water consumption ~5t/h

    Cooling water tempt. ≤30℃

    Cooling water pressure ≥0.3MPa

    Scope of supply:

    4.1.1 Motor 1set

    4.1.2 Compressor body 1set

    4.1.3 Control panel 1set

    4.1.4 Spare parts with machine 1set

    4.1.5 End stage cooler 1set

    4.2,Air compressor(reciprocating non-lub. ) 1 set

    Manufactory Liuzhou

    Type ZW-6/7

    Discharge capacity 6m3/min

    Discharge pressure 0.7MPa(G)

    Motor power 37kW

    Cooling water consumption ~2t/h

    Cooling water tempt. ≤30℃

    Cooling water pressure ≥0.3MPa

    Scope of supply:

    4.2.1Motor 1set

    4.2.2 Compressor body 1set

    4.2.3 Control panel 1set

    4.2.4 Spare parts with machine 1set

    4.2.5 End stage cooler 1set

    4.3,Air buffer Pc

    Volume 2m3

    Working pressure 0.8MPa

    4.4,Air precooling unit 1 Group

    Manufacturer Hangzhou

    Type GAYL-1680/8

    Process air 1680m3/h

    Inlet pressure ≤0.8MPa(G)

    Air inlet tempt. ≤40℃

    Air outlet tempt. ~8℃

    Motor power ~15kW

    Recycling tempt. inlet pressure ≥0.3MPa

    Recycling tempt. inlet tempt. ≤30℃

    Recycling water capacity ~10t/h

    Scope of supply:

    4.4.1 Inlet refrigeration compressor 1set

    4.4.2 Condenser 1set

    4.4.3 Evaporator 1set

    4.4.4 Pipe valves 1set

    4.4.5 Refrigeration auto control element 1set

    4.4.6 Electric control board 1set

    4.4.7 Operation instrument panel 1set

    4.4.8 Water separator 1set

    4.4.9 Liquid level warning device 1set

    Note:All above assembled as one unit.


    4.5,MS purification system 1 set

    Type HXK-1680/8

    Process capacity 1680m3/h

    Working pressure 0.8MPa

    Air inlet tempt. 12℃

    Absorbing time 8h

    Regenerating gas inlet tempt. 250℃

    Regenerating gas outlet tempt. 100℃

    Heater power 36kW

    Scope of supply:

    4.5.1 MS absorbent column(containing MS) 2sets

    4.5.2 Heater 1set

    4.5.3 Filter 1pc

    4.5.4 Pipe and valve 1set

    Note:Above skid-mounted

    4.6,Rectification column 1set

    Manufacturer Kaide

    Model FON-250/500

    Type Two stage rectification column

    Process air 1500m3/h

    O2 output 250m3/h±5%

    O2 purity ≥99.6%O2

    N2 output 500m3/h±5%

    N2 purity ≤10PPmO2

    Dim. 2200×2300×16000mm

    Scope of supply:

      4.6.1 Main heat exchanger 1set

    4.6.2 Subcooler 2set

    4.6.3 Condenser-evaporator 1set

    4.6.4 Distillation column 1set

    4.6.5 Cold box 1set

    4.7,Expansion turbine 1 group/2 sets

    Type PLPK-7/6.4-0.5

    Flow rate 420m3/h

    Inlet tempt 150K

    Inlet pressure/outlet pressure ~0.74MPa(A)/0.15MPa(A)

    Working medium air

    Brake method Fan brake

    Insulation efficiency ≥72%

    Scope of supply:

     4.7.1 Expansion turbine body 2sets

     4.7.2 Expansion extending knob 4ps

    4.7.3 Expander inlet filter 2ps

     Note:With distillation column as one body

    4.8 O2 compressor ( 55 kw)

    Type ZW-3.35/165 O2 compressor, :1 set

    Manufacturer Hangzhou

    Non-lub. piston O2 compressor

    Discharge capacity 200M3/h

    Discharge pressure 165kg

    Weight : 5.5tons

    4.9 O2 compressor: 1 set of distillation water lub. O2 compressors

    Capacity 100M3/h

    Manufacturer Hangzhou

    4.10 Filling ramp : 1 set

    connectors 12x2=24 connectors

    4.11. Balloon 100M3 : 1set


    5. Instrument and electric control system

    5.1Description for instrument and electric design

    KDON-250/500 plant electric and instrument control is of local panel control.

    5.2. Air compressor has one electric control panel and control face, pressure and tempt. indication, warning and operation buttons are provided on the operation desk.

    5.3. Purifier has purifier board and one heater power resource switch gear.

    5.4. Instrument board for distillation column.

    5.4. Instrument for expansion turbine.

    5.5. Tempt., flow rate, liquid level are digital-displayed in meters.

    1. Scope of supply by the buyer
      1. Connection valves, pipes (incl. flanges, bolts, nuts, washer, gaskets and accessories), necessary pipe support, valves, valves support, insulation material, packing steel belt, etc. between each unit(machine).
      2. Air suction part (buyer should ensure the air quality for the oxygen plant.

    6.3 Measuring pipe, pipes support, cable and wire, pipes for each single unit and equipment and accessories for sealing gas system.

    6.4 Anti-lightning device, earthing device for outside of the rectification column and vessels.

    6.5 Engineering design for the workshop, including all civil work for , incl. light, utility engineering, workshop foundation sanitation, water supply and drainage, communication, indoor air conditioning, fire control, heating device as well as lifting device inside workshop., hoisting facility, etc.

    HV power supply panel, voltage drop starter (if needed) , etc distribution equipment.

    1. All measuring meters pipe line, pipe support, cable(low tempt. cable in the cold box not included.), all pipe line and accessories in seal gas system.
    2. Engineering design for the workshop, including all civil work for , incl. light, utility engineering, workshop foundation sanitation, water supply and drainage, communication, indoor air conditioning, fire control, heating device as well as lifting device inside workshop., hoisting facility, etc. Cranes for workshop.
    3. Cooling tower, water pump, pipe, valves and accessories, etc. for the water cooling system.

    6.10 Coating and paint for final painting of the plant.

    6.11 Material and oil for operation of the plant.

    6.12 N2 analyzer


    KDON - 250/500 oxygen plant



    Quality Low Pressure 99.6% Air Separation Plant Oxygen Generating Machine 250m³/h for sale
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