Liquid nitrogen generatort 2650 KDN-2650 Liquid nitrogen generatort
Standard Products for Pure Nitrogen Plant KDN series manufactured
Typical Product: KDN-2650 Liquid nitrogen generator
Output, purity and pressure
Note: 1.The liquid output is calculated from data of gas, and the
pressure is calculated with 0 meter high at outlet of cold box.
2.Nm3/h is defined as the volume at 0℃, 101.3kPa(A) .
The proposed plant employs a process in which air is purified by
molecular sieve and waste nitrogen is refluxed and expanded.
Following the elimination of dust and other mechanical impurities
from process air in an air filter, the process air enters air
compressor where it is compressed to the rated pressure. The
compressed air enters precooling system to be cooled to the
temperature to the benefit of adsorbtion.
The pre-cooled air enters one of molecular sieve adsorbers where
such impurities contained in air as moisture, CO2, C2H2 and
hydrocarbon are adsorbed by molecular sieve.
The purified air out of adsorber enters main heat exchanger in
which the temperature reduced gradually; out of main heat
exchanger, the cooled air reaches the saturated temperature and
enters the bottom of nitrogen column to take part in rectification.
Air rises in nitrogen column to be condensed continually, of
which the nitrogen content increased, and the product nitrogen gas
is obtained at the top. The nitrogen gas drawn out of the top of
column enters main heat exchanger, and then it is supplied to
client after being rewarmed. The rest of nitrogen gas at the top of
column enters condenser evaporator to be condensed as liquid
nitrogen. The liquid nitrogen flows back to nitrogen column as
refluxed liquid to take part in rectification, and it evaporates
gradually while the oxygen content increases, and oxygen enriched
liquid air is obtained at the bottom.
The liquid nitrogen is fed into liquid nitrogen storage tank SV1 to
be supplied to client as the product liquid nitrogen.
Oxygen-enriched liquid air enters liquid air subcooler to be
subcooled and throttled to be fed into condenser evaporator.
Oxygen-enriched liquid air is vaporized to be oxygen-enriched air
in condenser evaporator and then the oxygen-enriched air to be fed
out of the top of column and into main heat exchanger to be warmed.
The warmed air is fed out of the middle portion of main heat
exchanger and into turbo-expander to be expanded and refrigerated.
Expanded oxygen-enriched air enters main heat exchanger to be fed
out of cold box after to be rewarmed.
Part of oxygen-enriched air fed out of cold box enters electric
heater to be warmed, and then enters another molecular sieve
adsorber as the regenerated gas for molecular sieve adsorber, and
the rest is discharged.
1. Ripening Gases for Fruits
2. Electronics & Semi Conductors
4. Sealing Gas
5. Nitrogen and Helium Leak Test
1. Our company’s economic effectiveness is in the lead of the
industry in China
2. Low-power high-efficiency
3. Quick delivery
4. Widely sales around the world