Cryogenic Air Separation Plant 50/2500 (Nm3/h) KDON-50GOX/2500GAN
Cryogenic Air Separation Plant KDON 50~200 Nm3/h GOX
Typical Product: KDON 50/2500 Air Separation Plant
Output, purity and pressure
◆ The process is that air is purified by molecular sieve and
refrigerated by boosting turbine expander; fractionating column is
sieve trays column.
◆ Air filter AF purifies air, and compressor compresses air. Air
precooling system reduces temperature of air.
◆ Molecular sieve adsorber adsorbes moisture, CO2, C2H2.
◆ The purified air is divided into three streams:
One stream is fed out to be instrument air;
Another stream enters main heat exchanger (E1) to be cooled to the
saturated temperature by reflux gas and then enters nitrogen column
(C1); the air keeps rising in the nitrogen column and being
condensed to increase the nitrogen content, and the nitrogen will
be obtained at the top. Part nitrogen will be sent to oxygen column
to be as completion heat source of liquid oxygen evaporator.
The rest nitrogen is withdrawn as product, and then goes out of
cold box after being rewarmed with main heat exchanger, and after
being boosted to the required pressure of user with the boosting
end of expander, it is fed into the nitrogen pipe network.
◆ The oxygen enriched liquid air at the bottom of nitrogen column
goes into the liquid air subcooler to be subcooled, and then part
liquid air to be throttled goes into the nitrogen column
condensation evaporator. And the rest goes into the oxygen column
as reflux liquid.
◆ The oxygen enriched liquid air is evaporated to be oxygen
enriched air which is withdrawn from the top and goes into the main
heat exchanger to be rewarmed, and then it toes into the expander
tor expansion refrigeration after being withdrawn from the middle
of main heat exchanger.
◆ The expanded oxygen enriched air enters main heat exchanger to be
rewarmed, and then goes out of cold box.
◆ The liquid oxygen will be obtained after the oxygen enriched
liquid air is rectified in oxygen column. The liquid oxygen goes
into the main heat exchanger to be rewarmed after being boosted
with liquid oxygen pump, and then it goes out of cold box as
- Welding Gas
- Agricultural and Agro Industry
- Shielding gas
- Successful experience of made many plants
- Low Operating Cost
- Quick delivery
- Economization of energy,