Cryogenic Air Separation Plant - China

Air which was sucked in from air intake tower enters the

suction air filter and after being removed of dust and other

mechanical contaminants in it, it is compressed to the

pressure of 0.55MPa by centrifugal air compressor.

Air from

the air compressor is cooled to 10℃ in the direct contact

after cooler and refrigeration unit after the water being

separated its condensed water, taken into the molecular

sieve adsorber for removing H2O, C2H2 and CO2 - There are two

molecular sieve adsorbers which operate on a staggered

cycle, i.

e.

one vessel is adsorbing the contained impurities

while the other is being reactivated by waste nitrogen from

the rectifying column.

Then the cleaned air is divided into two streams, one of

them is taken into the rectifying column and cooled by the

returned waste nitrogen, oxygen and nitrogen through the

main heat exchanger.

The steam- liquid air mixture is taken

into the lower column for rectifying, and herein the pure

nitrogen of 99.99% from the top of the column enters into

the evaporator- condenser and condensed by liquid oxygen from

the upper column.

A part of the liquid nitrogen is fed to

the lower column as reflux.

The other part is divided into

two streams, one of them after subcooling enters into the

top of the upper column after throttled, the other enters

crude argon condenser of crude argon column, after

vaporized, it enters in upper column.

Another cleaned stream is compressed in booster end of the

booster expansion turbine, and then enters the main heat

exchanger.

Two streams of air from the middle and cold end

of the main heat exchanger joint together and enter into the

turbine expansion to generate most refrigeration for need of

the plant' s operation.

After the expanded air is removed of

overheat through the thermosyphon heat exchanger, it enters

to the middle of the upper column for rectifying.

A stream of 8% Ar is drawn from middle- lower section of

upper column and enters Crude Argon Column I to be

rectified.

Gas is drawn from top of Crude Argon Column I and

enters Crude Argon Column II, then enters condenser as its

reflux.

The liquid at the bottom of Crude Argon Column II is

pumped into top of the Crude Argon Column I as reflux, the

crude argon is drawn from Crude Argon Column I and enters

heat exchanger then enters pure argon column, pure liquid

argon of 99.99% Ar is drawn from bottom of pure argon column

and enters Lar storage & gasification system.

The product oxygen with the purity of 99.8% O2 gained at the

bottom of the upper column is warmed up through the heat

exchanger and then delivered to the compressed oxygen

system.

The LOX of 99.8% O2 is drawn from oxygen side of the

evaporator- condenser, some of them enters storage tank as

product.

The product nitrogen of 99.99% N2 from recycle N2

compression system is supplied to the user for use.

The waste nitrogen from the top of the upper column is

warmed up, one part goes to the regeneration molecular sieve

adsorber, another goes to waste nitrogen tower to cool the

water.

Company Contact:

• Posted By: Henan Kenuo Energy Equipment Co., Ltd.

• Phone: 008637128888159

• Address: Dingliguoji Universal North Huanghe Road Jinming D, KAIFENG , China

• Email:

• Website: http://www.air-separation-supplier.com/

• Business Description: Henan Kenuo Energy Equipment Co., Ltd. is a Chinese professional
  
  manufacture r of air separation equipments specializing in gas supply
  
  solution and gas investment, which is located in Kaifeng, the capital of
  
  Song dynasty in Henan province.
  
  Founded for 30 years, the company
  
  already occupies 200 acres and has 410 employees including 50
  
  technicians.