PSA industrial Oxygen Gas making machine used in sewage treatment
PSA Oxygen Generator
PSA oxygen making machine working principle: PSA oxygen making
machine is an automatic equipment which takes zeolite molecular
sieve as adsorbent, USES the principle of pressure adsorption,
decompression desorption to adsorb and release oxygen from the air,
so as to separate oxygen. Zeolite molecular sieve is a kind of
processed one by special pore processing technology, the surface
and the internal microporous spherical granular adsorbent. It is
white. Its pass characteristics enable it to achieve the kinetic
separation of oxygen and nitrogen. The effect of zeolite molecular
sieve on the separation of oxygen and nitrogen is based on the
slight difference in the kinetic diameters of the two gases.
Nitrogen molecules have a faster diffusion rate in the pores of
zeolite molecular sieve, while oxygen molecules have a slower
diffusion rate. The diffusion of water and carbon dioxide in
compressed air is not much different from that of nitrogen. What
ends up coming out of the adsorption column is oxygen molecules.
PSA oxygen production is to use the selective adsorption
characteristics of zeolite molecular sieve, using pressure
adsorption, decompression desorption cycle, the compressed air into
the adsorption tower to achieve air separation, so as to
continuously produce high purity oxygen.
PSA oxygen production machine is based on the principle of PSA
pressure adsorption, using high quality zeolite molecular sieve as
adsorbent, in a certain pressure, from the air to make oxygen. The
purified and dried compressed air were carried out in the adsorber
for pressure adsorption and decompression desorption. Due to the
aerodynamic effect, the diffusion rate of nitrogen in the pores of
zeolite molecular sieve is much higher than that of oxygen.
Nitrogen is preferentially adsorbed by zeolite molecular sieve, and
oxygen is enriched in the gas phase to form finished oxygen. The
adsorbent then desorbs the adsorbed impurities such as nitrogen
through decompression to atmospheric pressure. Generally, two
adsorption towers are set in the system, one is for adsorption and
oxygen generation, the other is for desorption and regeneration.
PLC program controller is used to control the opening and closing
of pneumatic valve to make the two towers circulate alternately, so
as to realize the purpose of continuous production of high-quality
oxygen. The whole system consists of the following components:
compressed air purification unit, air storage tank, oxygen and
nitrogen separation device, oxygen buffer tank.
2, Technical characteristics of PSA oxygen generator:
- Compressed air is equipped with air purification and drying
treatment device. Clean and dry compressed air is conducive to
extending the service life of molecular sieve.
- The new pneumatic globe valve adopted has the advantages of fast
opening and closing speed, no leakage, long service life, frequent
use of psa process and high reliability.
- Perfect process design, selection of new molecular sieve.
- Adopt new technology of oxygen production, optimize device design
constantly, reduce energy consumption and capital investment.
- The compact structure of the equipment reduces the occupied floor
space.
- Stable performance, PLC control, automatic operation, low annual
failure rate.
- Fast start-up speed, 15 ~ 30 minutes can provide qualified oxygen.
- Fully automatic operation of the equipment, the whole process can
realize unattended
- High efficiency molecular sieve filling, more compact, more solid,
longer service life.
- Stable and adjustable pressure, purity and flow to meet different
needs of customers.
- Reasonable structure, advanced process, safety and stability, low
energy consumption.
- Compared with the high cost of bottled oxygen and liquid oxygen,
oxygen generator has the lowest cost of oxygen production, which is
the most cost-effective for enterprises engaged in medical
treatment, plateau, breeding, environmental protection and
combustion.
Application fields:
PSA industrial oxygen generator can be widely used in
oxygen-enriched combustion petrochemical industry, electric furnace
steelmaking, papermaking, glass production, making ozone,
aquaculture, sewage treatment, aerospace and other industries and
fields, for the different requirements of different users of
different industries use of oxygen, since provide personalized,
specialized oxygen equipment, fully meet the requirements of
different users of gas.
PSA oxygen generator system components and working process
- Compressed air purification units:Air compressor to provide
compressed air first into the compressed air purification
component, compressed air by the first pipeline filters to remove
most of the oil, water and dust, then through freeze drying machine
further in addition to water, fine filter oil removal, dust
removal, and by superfinishing deep purification filter, to prevent
possible trace oil seepage, provide full protection for molecular
sieve. Rigorous air purification components ensure the life of the
molecular sieve.
- Air storage tank:The role of the air tank is to reduce the flow of
pulsation, as a buffer;In this way, the pressure fluctuation of the
system can be reduced, and the compressed air can pass through the
compressed air purification component smoothly, so as to fully
remove the oil and water impurities and reduce the load of
subsequent PSA oxygen and nitrogen separation device. At the same
time, when the adsorption tower is switched, it also provides a
large amount of compressed air required for PSA oxygen and nitrogen
separation device to rapidly boost pressure in a short time, so
that the pressure in the adsorption tower will soon rise to the
working pressure, ensuring the reliable and stable operation of the
equipment.
- Oxygen and nitrogen separation unit:There are two adsorption towers
A and B equipped with special molecular sieve. When the clean
compressed air enters the inlet end of tower A and flows through
the molecular sieve to the outlet end, N2 is adsorbed by it, and
oxygen of the product flows out from the outlet end of the
adsorption tower. After A period of time, the molecular sieve in
tower A adsorbs saturated. At this time, A tower automatically stop
adsorption, compressed air flow into B tower for nitrogen
absorption and oxygen production, and A tower molecular sieve
regeneration. Molecular sieve regeneration is achieved by rapidly
lowering the adsorption column to atmospheric pressure to remove
the adsorbed nitrogen. The two towers adsorb and regenerate
alternately, complete oxygen and nitrogen separation, and
continuously output oxygen. These processes are controlled by a
programmable logic controller (PLC).When the oxygen content at the
outlet end is less than the set value, the PLC program functions to
automatically vent the valve, and automatically vent the
unqualified oxygen to ensure that the unqualified oxygen does not
flow to the gas point. The noise is reduced to less than 75dBA by
silencer when the gas is discharged.
- Oxygen buffer tank:The oxygen buffer tank is used to balance the
pressure and purity of oxygen separated from the nitrogen-oxygen
separation system to ensure the stability of continuous oxygen
supply. At the same time, after the switch of the adsorption tower,
it will recharge part of its own gas adsorption tower, on the one
hand to help the adsorption tower boost pressure, but also play a
role in protecting the bed, in the process of equipment work plays
a very important role in the process of technological assistance.
Technical Parameters
● Oxygen output——≤98Nm3/hr
●Purity——90%-93%
● Pressure——0.3~0.4 Mpa
● Atmospheric dew point——≤-40℃
Product Picture:
Date of delivery:75 days after receiving deposit,
Monthly output:60 sets/month
Payment term:30% deposit against the signed PI,70% balance should
be paid before shipment.
After Sales:Factory site installation and debugging qualified
acceptance