PSA Nitrogen making machine used in food industry
Working principle of PSA nitrogen generator: PSA nitrogen generator
is a new kind of air separation equipment, taking compressed air as
the raw material and carbon molecular sieve ( CMS ) as the
adsorbent. under the principle of pressure adsorption,
decompression desorption to achieve oxygen. According to the
differences of adsorption and diffusion between oxygen and nitrogen
in CMS, through controlling the programme on/off to realize
pressure adsorption and decompression desorption so that to get the
qualified nitrogen.
Our company can produce purity of nitrogen from 95% to 99.99%, the
output of nitrogen is 10 ~ 1000 Nm3 / h. When combining the
ordinary nitrogen making machine with the nitrogen purification
system, nitrogen purity can be reached to 99.9995%, the oxygen
levels in the nitrogen is less than or equal to 5 PPM, dew point
less than or equal to - 70 ℃.
Features of PSA nitrogen plant:
Compressed air purification system:Carbon molecular sieve plays an
important role of producing nitrogen in nitrogen plant. It is well
known that the air contains oil and water, but oil and water will
damage the performance of carbon molecular sieve. When the air come
into the separation system, it is needed to remove the oil and
water. Firstly, the pipeline will remove the most water, oil and
some other impurities when the air passes through purification
system. Secondly, the water in the air will be reduced by the
cooling system. The compressed air purification system is composed
of pipeline filter, refrigerant dryer, filter, active carbon, oil
remover, automatic drainer valve, ball valve and so on.
- Air tank system: The aim of the air tank is to keep the stability
of the gas which will be used in the separating system. It ensures
that if the flow rate of the gas is fast, it will not affect the
purification of the gas so that to prolong the service life of
molecular sieve, ball valve, pressure gauge, etc.
- Body of Nitrogen making machine: The oxygen and nitrogen separating
system is the significant part of air separation -- with two
adsorption towers which has filled with carbon molecular sieve(CMS)
separately. The O2, CO2, micro H2O will be adsorbed when the clean
air enters into the adsorption tower and then the N2 will come out.
And the adsorbed parts will be released by controlling the pressure
so that to realize the regeneration. The two towers make sure that
the process will work continuously. This part is made up of
adsorption tower,CMS, pneumatic valve, pressure gauge.
- Nitrogen buffer system :The main function nitrogen buffer tank is
to balance the purity and pressure of nitrogen so that the
qualified gas will be supplied continuously. At the same time, when
the adsorption tower is transformed from regeneration to
adsorption, it will recharge the partially qualified nitrogen
stored in the adsorption tower to protect the molecular sieve bed,
and also help the adsorption tower boost pressure. Moreover, when
the adsorption tower is regenerative to adsorption, it will
recharge the partially qualified nitrogen stored in the protective
bed of the adsorption tower, and also help the adsorption tower
boosting pressure. The nitrogen buffer tank consists of buffer
tank, flow meter, filter, pressure regulating valve, protective
valve,etc.
- Electrical Control System :The main items of electrical controlling
system are--shut-off equipment operation, the sign of working
status, the alarm indicator, purity display, programmed pneumatic
valve and so on. The electrical controlling system is made up of
PLC, solenoid valve, etc. The sign indicator, micro oxygen gauge
are placed in the control cabinet.
Product Features:
- Low cost: PSA is an advanced but also simple way to produce
nitrogen. The nitrogen can be produced in few minutes with lower
energy consumption.
- Reliable performance: It is easy to start this machine, just need
to press the start -off button so that the nitrogen will be
produced. The nitrogen purity is stable and it can be seen from the
control screen so that the purity will be guaranteed.
- Excellent imported carbon molecular sieve: it has the
characteristics of large adsorption capacity, high compression
resistance and long service life.
- High quality control valve: excellent imported special pneumatic
valve can ensure the stable and reliable operation of the
equipment.Strong technical force and excellent after-sales
service.Equipment is containerized, and only gas source, power
source and water source need to be connected during field
installation.Excellent electrical and mechanical assembly
technology, provide continuous technical service, be responsible
for site commissioning and training operation.
Main Application Fields:
PSA Nitrogen Generator widely used in Electronic industry,
metallurgy industry, petrochemical industry, food industry,
pharmaceutical industry, chemical fiber industry, heat treatment
industry, rubber tires etc.
Technical Parameters:
Stable and adjustable pressure, purity and flow to meet different
needs of customers
● Nitrogen output —— 400Nm3/hr
● Purity ——99.99%
● Pressure ——≤0.7Mpa
● Atmospheric dew point ——≤-40℃
Note: lower oxygen content and dew point requirement, NP-series
nitrogen purification device is optional.