Skid-mounted Argon plant 50 Nm3/h ~ 150 Nm3/h KDONAr-4700/2800/140Y/100Y Refrigerant Liquid Nitrogen
KDONAr-50 Nm3/h ~ 150 Nm3/h Argon plant Series
Typical Product: KDONAr-4700/2800/140Y/100Y Argon plant
Output, purity and pressure
4700 Nm3/h /2800 Nm3/h/140 Nm3/h
99.5% O2 /5ppmO2/ 2ppmO2,3ppmN2
This plant employs a process in which the air is purified by
molecular sieve at normal temperature and refrigeration is created
by booster turbo expander. The fractionating column is packed with
structural packing and argon is extracted through complete
After the feed air is cleaned of dust and mechanical impurities in
air filter, it is compressed in air compressor to a certain
pressure and then pre-cooled in air cooling tower. The water supply
to air cooling tower is divided into 2 sections. The treated
circulating water is used at the lower section of air cooling tower
while the low temperature water cooled by water cooling tower is
used at the upper section of air cooling tower. The wire-mesh
screen demister is provided at the top of air cooling tower in
order to prevent the moisture from being brought out and remove the
water drops in air.
The air going out of air cooling tower flows into 2 switched
molecular sieve adsorbers for removal of such impurities as H2O, CO2 and C2H2 from the air.
The purified process air is divided into 3 streams of which one is
used as the instrument air. The second stream flows through main
heat exchanger into lower column to take part in the rectification.
The third stream is boosted in recycle compressor. The air at a
flowrate equivalent to expander capacity is extracted from the
medium pressure section of recycle compressor, boosted and cooled
at the booster end of expander and then fed to main heat exchanger.
It is extracted from the middle part of exchanger, expanded in the
expander and fed to the lower column for participation in
rectification. The rest is boosted and cooled at the high pressure
section of recycle compressor and then cooled in main heat
exchanger. It flows into lower column for participation in
rectification after being fed out of main heat exchanger and
throttled. After the air is preliminarily rectified in lower
column, the liquid air and pure liquid nitrogen are obtained. The
liquid air and pure liquid nitrogen extracted from the lower column
are throttled through subcooled and fed to the upper column.
Following further rectification in upper column, the liquid oxygen
at purity of 99.6％ is obtained at the bottom of upper column. Some
of the liquid oxygen is delivered to the liquid oxygen pump,
reheated in main heat exchanger after it is compressed to a certain
pressure and then delivered to the client. The rest is delivered to
the liquid oxygen storage system.
Some of the liquid nitrogen drawn out of the top of upper column is
delivered to the liquid nitrogen storage system. The rest is
delivered to the liquid nitrogen pump and fed out of cold box to
the client after it is compressed to a certain pressure and
reheated in main heat exchanger.
After the waste nitrogen gas drawn from the upper part of upper
column is reheated in subcooler and main heat exchanger, it is fed
out of cold box to mainly satisfy the regeneration of molecular
sieve while the rest is delivered to water cooling tower.
A certain amount of argon fraction is extracted from the middle
part of upper column is fed to the crude argon column. The crude
argon column is divided into 2 sections in structure. The reflowing
liquid at the bottom of the second section (crude argon column Ⅱ)
is delivered through liquid pump to the top of the first section
(crude argon column Ⅰ) where it is also used as the reflowing
liquid. After the argon fraction is rectified in crude argon
column, the crude liquid argon is obtained and fed to the middle
part of pure argon column. The pure liquid argon product is
obtained at the column bottom following rectification. Some of
liquid argon is delivered to the liquid argon pump and fed out of
cold box to the client after it is compressed to a certain pressure
and reheated in main heat exchanger while the rest is delivered to
the liquid argon storage system.
- Used for inerting storage tanks of ships and tanks for petroleum
products, or for protecting edible oil product from oxidation.
- Automotive and transportation equipment
- Illumination industry
- Construction & Machinery
- Food industry
Hangyang has a long history in small ASU manufacturing. The
integral skid-mounted structure has been developed to meet the
requirement of customers, to achieve convenience, portable and high
stability which can save construction cost for the users and thus
are welcomed by global customers.