Air Separation Plant Nm3/h KDON-3000/6000 Metal production Depth
refrigerant Argon Generator
Product List for KDON-3000(GOX)/50~7000 GAN Air Separation Plant
≤2 ppm O2
≤3 ppm N2
Typical Product: KDON-2600/1500 Air Separation Plant
Output, purity and pressure
The oxygen internal compression process with molecular sieve for
purification and air boosting, medium pressure boosting turbo
expander, and the expanded air flows into lower column, the argon
is extracted through complete rectification is employed by this air
The purified air is split into two streams. One stream is as
The other stream is split into two parts: one part is sent into
lower column after expanded. The other part is sent into plate-fin
heat exchanger after cooled to exchange heat with refluxed gas. The
cooled air flows into liquid oxygen evaporator to exchange heat
with LOX, after which the air is throttled into lower column.
Liquid air, pure liquid nitrogen and waste liquid nitrogen are
obtained after preliminary rectifying in lower column, and after
being throttled in the subcooler, they are sent into upper column.
LOX is obtained at the bottom of upper column after further
rectification in upper column, which is sent into LOX evaporator
after being boosted in the LOX pump. The evaporated oxygen gas
flows into plate-fin heat exchanger to be rewarmed and fed out of
cold box to oxygen pipelines.
A certain amount of argon fraction extracted to the crude argon
column which is structurally divided into two sections. The reflux
liquid at the bottom of the second section (crude argon column Ⅱ)is
fed by liquid pump to the top of the first section (crude argon
columnⅠ) where it is also used as the reflux liquid. The crude
liquid argon is obtained through argon fraction rectified in crude
argon column and fed to the middle of pure argon column. The pure
liquid argon is obtained at the bottom of pure argon column
following rectification in this column.
- Automotive and transportation equipment
- Welding and metal processing
- Metal production
- Health care
- Source of energy
- Depth refrigerant
- The extraction of argon by means of complete cryogenic
rectification ensures the safety to a greater extent.
- All pressure vessels, pipelines and elements are strictly designed,
fabricated and inspected in accordance with the applicable national
codes. The cold boxes for air separation plants and pipelines etc.
inside columns are accepted by means of strength calculation.
- Economization of energy
- Rich historical experience over 60 years
- Widely sales around the world