Cryogenic Air Separation Plant 200/500 Nm3/h KDON-200/500 L/h
Cryogenic Air Separation Plant KDON 200 ~ 350 Nm3/h Series
Typical Product: KDON 200/500 Cryogenic Air Separation Plant
Output, purity and pressure
The feed air is divided into two streams after pre-processed: part
air goes into gas bearing for being expanded, after which goes into
upper column; the rest is continuously cooled in heat exchanger to
saturation temperature with certain humidity-bearing, and then
throttled to lower column.
Due to different boiling points of oxygen and nitrogen (oxygen is
high than nitrogen), the nitrogen contained in the liquid air
evaporates first, which goes up to the condensation side top of
condenser evaporator through sieve trays, where it exchangers heat
with liquid oxygen of the evaporation side, by which the gaseous
nitrogen is liquefied to liquid nitrogen. Part liquid nitrogen is
sent to the top of column through V-3 valve as the reflux liquid
for the rectification of upper column after being subcooled by
liquid nitrogen subcooler. After complete rectification in upper
column, the required gaseous oxygen and nitrogen are respectively
obtained from the bottom and top of upper column.
The waste nitrogen drawn from the upper position of upper column
becomes the regeneration gas of purifier or blown off after being
rewarmed in heat exchanger.
The oxygen out of fractionating column is rewarmed through
subcooler and main heat exchanger, and then it is sucked into
oxygen compressor to be compressor to 15 MPa to be charged into
The nitrogen out of fractionating column is rewarmed through main
heat exchanger, and then it is charged into cylinder or discharged.
1. Metal production
2. Automotive and transportation equipment
4. Protective gas
5. Depth refrigerant
1. Self-cleaning type air filter: feed air filter adopts the most
advanced air-powered self-cleaning air filter in China, which can
eliminate mechanical impurities and dust in feed air. Technical
features: the material of filter element is adopted with imported
material and its service life can be 1~2 years.
2. The molecular sieve purification system: the advanced, reliable
and special design software is used for calculation of the system
performance and of the structure of adsorber to ensure both the
advantages and reliability of this system