99.6% O2 / N2 Cryogenic Air Separation Unit Liquid Oxygen Plant

99.6% Air Separation Plant Industrial KDON-315/500 Oxygen Plant With Low Energy Consumption

1.1 Atmosphere pressure       96kPa(A)
Atmosphere tempt.    25℃
Relative humidity 75%
O2 contained in air    20.95%O₂

1.2 Annual average tempt.                                18.4℃
Max. Tempt.                                       45℃
Min. Tempt.                                        -15℃
Average tempt. in Summer                           25℃
Average tempt. in Winter                             -15℃

1.3 Earth shake :  ＜6 Mcalli degree

1.4 Sea level:       ～425m

1.5 Impurity in atmosphere:
CO2       ≤300 ppm
SO2       ≤0.44 mg/m3
H2S       ≤2.3 mg/m3
CH4       ≤5.2mg/m3
C2H2     ≤0.03 ppm
CnHm(Except C2H2)     ≤5 ppm
Dust content       ≤10mg/m3

1.6 Recycling water

Inlet tempt.   30℃
Inlet pressure      0.4 MPa(G)
Max. pressure drop    0.2 MPa(G)
Max. tempt. rising       10℃
Turbidity of cooling water   12 mg/L
PH value       7.2

Total hardness       2.5
Fouling factor 0.0004 m2 hºC/ kW

       Water consumption: 180T/h Recycling water   ～25T/h(not incl. O2 compressor)

1.6 Power supply
HV power supply               10kV±5%
LV power supply                380V/220V±5%
Frequency                      50±0.5Hz

     Loaded power                      ～330KW(Name plate not iccl.

O2compressor)

 

2.  Main technical parameters

2.1 Output and purity, pressure(out of the cold box)

 

O2 output                             315m³/h±5%

O2 purity                             ≥99.6%O₂

O2 pressure                           ～0.034MPa(G)

N2 output                             800m³/h±5%

N2 purity                             ≤10ppmO₂

N2 pressure                           ～0.012 MPa(G)

Product output status(at 0℃,101.325Kpa)

2.2 Start pressure                        0.65MPa(G)

2.3 Continuous operation period between two defrosting times   12months

2.4 Start time                            ～24 Hours

2.5 Specific power consumption            ～0.64kWh/m³O₂(not incl. O2 compressor)

 

3. Process description:

KDON-315/500 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 s 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:

4.1.1 Non-lub reciprocating air compressor 1 set (Louzhou)

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:for each

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

4.1.2  Non-lub reciprocating air compressor 1 set (Louzhou)

Type                                 VHn-13/7

Discharge capacity                   780m³/h

Discharge pressure                   0.7MPa(G)

Motor power                          kW

Cooling water consumption            ～2t/h

Cooling water tempt.                 ≤30℃

Cooling water pressure               ≥0.3MPa

Scope of supply:

4.2.1 Main motor                     1set

4.2.2 Compressor body                1set

4.2.3 Electric control panel         1set

4.2.4 Accessory with machine         1set

4.2.5 End stage cooler               1set

 

4.2,Air buffer                Pc

      Volume                              2m³

    Working pressure                    0.8MPa

4.3,Air precooling unit       1 Group

    Manufacturer                   Hangzhou

Type                                 GAYL-2000/8

Process air                          2000m³/h

Inlet pressure                           ≤0.8MPa(G)

Air inlet tempt.                          ≤40℃

Air outlet tempt.                              ～8℃

Motor power                          ～15kW

Recycling inlet pressure             ≥0.3MPa

Recycling inlet tempt.               ≤30℃

Recycling water capacity             ～12t/h

Scope of supply:

4.4.1 Inlet refrigerator compressor  1set

4.4.2 Condenser                      1set

4.4.3 Evaporator                     1set

4.4.4 Pipe valve                     1set

4.4.5 Refrigeration control element  1set

4.4.6 Electric control panel         1set

4.4.7 Operation instrument panel     1set

4.4.8Water separator                 1set

4.4.9 Liquid level warning device    1set

Note:All above designed and installed  as a whole set.

        

4.4,MS purification system            1 set

     Type                                 HXK-2000/8

  Process capacity                        2000m³/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:

4.4.1 MS absorbent column(containing MS)   2sets

4.4.2 Heater                                                              1set

4.4.3 Filter                                                               1pc

4.4.4 Pipe and valve                    １set

Above is designed as a skid-mounted mood.

4.5,Distillation column       1 set

  Manufacturer                                                        Kaide

   Model                                    FON-315/800X

   Type                                 Two stage rectification column

   Process air                          2000m³/h

   O2 output                            315m³/h-5%

   O2 purity                            ≥99.6%O₂

N2 output                            800m³/h-5%

  N2 purity                             ≤10PPmO₂

   Dim.                                 2200×2300×18000mm

Scope of supply:

　 4.5.1 Main heat exchanger                                       1set

4.5.2 Subcooler                                                        2set

4.5.3 Condenser-evaporator                                     1set

4.5.4 Distillation column                1set

   4.5.5 Cold box                           1set

4.6,Expansion turbine         1 group/2 sets(Jiangsi)

    Type                                  PLPK-7/6.4-0.5

  Flow                                  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:

　4.6.1 Expansion turbine body                    2sets

　4.6.2 Expansion extending knob                  4ps

4.6.3 Expander inlet filter                      2ps

　Note: distillation column as one body

 

4.7,Baloon(100m³)               1 pc   (Jiangdu)

4.8,O2 filling ramp (24connectors)    2 sets

4.9. Spare parts for one year

4.12.1  O2 compressor                            1 set

 Type ZW-3.33/165 O2 compressor,      

Manufacturer                       Hangzhou      

        Non-lub. piston O2 compressor

        Discharge capacity                   200M3/h(can be used as 220M3/h)

        Discharge pressure                    165kg

Weight :                             5.5tons

4.12.2    O2 compressor                         1 set

Model          ZW-1.67/150 

Type Distillation water lubricating compressor              

Capacity                                 100M3/h

4.13 . Filling ramp       48 connectors        1 set

4.14. Balloon (100M3)                            1 set

4.15. Electrical and instrument panel                1 set

 

5.  Description for instrument and electric design

KDON-315/500 plant electric and instrument control is of local panel control.

 

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

5.2. Air compressor has one electric control panel and control face,  pressure and tempt. indication, warning and operation bottoms 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.

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

       

1. Scope of supply by the buyer
   1.   Air suction part (buyer should ensure the air quality for the oxygen plant).

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

6.3  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. Coating and paint for final painting of the plant.

6.5 Material and oil for operation of the plant.

6.6 N2 analyzer and N2 baloon.

6.7 All pipes and cable between single unit(equipment).

 

Competitive Advantage:

 

We Hang Zhou tai lian  Co., Ltd. is a gas plant and machinery supplier which is special faced to Bangladesh market.

Our supply scope has: air separation plant (gas oxygen plant, liquid oxygen plant, nitrogen plant), acetylene plant, hydrogen plant, CNG station plant, etc.

Also we are exporting gas plant related items: air compressor, oxygen compressor, liquid oxygen pump, oxygen/nirtogen/argon cylinders, cylinder valves, regulators, cylinder testing machines.

We have more than 10 companies corporated in Bangladesh.

We have the Ce certificate

  We persists in the principle of process lays the foundation,standard strengthens the quality,Implement decides the success,Innovation changes the future. According to the requirements of ISO9001 quality system standard, we have established effective quality system and feasible quality manual, which are firmly implemented. Over the past ten years, we have installed more than 300 air separation plants all over the world and have obtained the recognition of users. Our products are widely marketed throughout more than 30 provinces and autonomous regions, and also exported to dozens of countries including Vietnam, Kazakhstan, Bangladesh, Iraq, Egypt, Cambodia, Angola, Philippines, Pakistan, Venezuela, North Korea, Indian, Nigeria,etc.

 

O2 output	315m3/h±5%
O2 purity	>99.6%
O2 pressure	0-0.034mpa
N2 output	800m3/h±5%
N2 purity	<10ppmO2
N2 pressure	0-0.012mpa
Start pressure	0.65mpa
Start time	0-24h

 

 

KDON - 350/800 oxygen plant