High Purity Liquid Oxygen Nitrogen Plant , 1.2Mpa Industrial
Place of origin:China(mainland)
Model number:KDO, KDON SERIES
Production capacity:50-1000 m3/hour
Power :76-1000 KW
Life:20 years with proper maintenance
After-sales service provided: Engineers available to service plants
Usage: medical (oxygen, liquid oxygen,nitrogen,liquid nitrogen)
UIG Air separation plants are designed for a vast range of
capacities and products summarized below: FOR OXYGEN 99.7 % AND
Oxygen filling (or booster) with liquid pump.
The Plant uses normal temperature molecular sieve adsorption,
medium pressure booster expansion reflux flow.
Raw air is sucked from the atmosphere,It is going through filter
for removal of dust and mechanical impurities.,then it is
compressed to a certain degree by single stage screw compressor,via
end stage cooler, air pre-cooling system, the air is cooled to
approx. 8℃. After water separation moisture is separated in water
separator and then it goes to purifier for removal of moisture,
CO2, C2H2 and hydrogen dioxide.
Then most part of air enters main heat exchanger to be cooled to
saturated tempt. and partly is liquefied to the lower part of lower
column; another part of air is compressed to a certain degree
through two stage compression booster, via end stage cooler enters
into oxygen heat exchanger to be cooled to be near saturated
temperature, then after throttle goes to lower column. Through
lower column pre-distillation we can get enriched oxygen liquid air
from the bottom of the column. After cooling through
sub-cooler,after throttled it goes to the middle part of upper
column as reflux liquid for rectification. WN is obtained from the
top of lower column, after condensed through condenser-evaporator,
a part of WN is used as rectification reflux liquid for lower
column; another part after cooling through sub-cooler and after
throttling goes to the top of upper column as rectification reflux
liquid. Pure liquid oxygen is obtained from the bottom of upper
column, and it is condensed by condenser-evaporator. Liquid oxygen
is abstracted from the bottom after cooling through sub-cooler,
then it goes to LOX pump to be pressurized. It is evaporated in O2
heat exchanger and is reheated to normal tempt and then directly
goes to oxygen filling ramp for filling of cylinders.
WN from the top of upper column goes through sub-cooler, the ower
part of main heat exchanger to be reheated to a certain tempt. Then
it goes to expansion turbine to create cold and returns to
sub-cooler and main heat exchanger again to be reheated to normal
tempt. A part of it passes to purifier as regenerating gas resource
and another part goes to be vented partly.
we supplied to many countries (Russia, Kazakhstan, Tajikistan,
India, Bangladesh, Thailand, Philippines, North Korea, Mongolia,
Equatorial Guinea, Botswana, Zambia, Angola, Tanzania) .
It adopts up-to-date air separation technics flow and reasonable
equipment schemes, having the virtues as low working pressure,
simple operation, less maintenance fee and good discontinuous
It adopts the nitrogen-water pre-cooling system with back cooler
and regulated packing, needing much less water in the system.-It
equips inter-lock device to avoid water into purifier.