Nitrogen generation plant 5000 Nm3/h / 170 L/h KDN-5000/170Y
The Standard Products List KDN 5000~6000 Series Nitrogen Generation
Typical Product: KDN-5000/170Y Nitrogen generation plant
Output, purity and pressure
First operating mode:
5000 Nm3/h / 170 L/h
This plant employs a process in which the air is purified by
molecular sieve, expansion turbine is provided with braking
effected by fan and nitrogen is produced by means of single column
with expansion accomplished through backflow.
After the feed air is cleaned of dust and mechanical impurities in
air filter, it is compressed in air compressor.
The compressed air is then fed into air pre-cooling system. When it
is cooled to about 5~8℃, it becomes saturated.
The saturated and compressed air flows into switched molecular
sieve adsorbers where such hydrocarbons as H2O, CO2 and C2H2 are
adsorbed from the air.
A small part of purified process air is drawn out to be used as
instrument air and the remainder is fed into main heat exchanger.
The expanded waste nitrogen is drawn, which cooled after being
expanded to a saturation temperature and moisture- bearing to a
certain extent, is throttled into the bottom of nitrogen column for
participation in rectification. The nitrogen gas and liquid
nitrogen are then obtained at the top of nitrogen column while the
saturated and oxygen-rich liquid air at the bottom of column is
throttled into the evaporation side of condenser evaporator to
condense the nitrogen gas at the top of column.
Oxygen-rich liquid air at the evaporation side of condenser
evaporator is heated and vapored to be saturated gas by nitrogen
gas at the top of column, and then it is drawn out and into cold
end of main heat exchanger, after being rewarmed, it is drawn out
and into turbo-expander to be expanded and refrigerated.
Expanded oxygen-rich liquid air enters main heat exchanger to be
rewarmed to normal temperature and to be fed out of cold box;
partial gas is to be regeneration gas for molecular sieve adsorber,
the rest is blowed off.
The nitrogen gas and liquid nitrogen are drawn out of the top of
nitrogen column. The nitrogen gas flows out of cold box to the
client after it is rewarmed in main heat exchanger to a normal
In order to prevent hydrocarbon from accumulating in condenser
evaporator, a small stream of liquid drawn from oxygen-rich liquid
air evaporation side is discharged as waste liquid.
- Generate Vegetable Maturity Gas
- Sealing Gas
- Enrichment Gas
- Automotive, Ship, Aerospace & Aeronautics Industries
- Pulp & Paper
- Chemical synthesis
- High reliability.
- Short time delivery. Good service.
- Low Working Pressure
- Low-power high-efficiency