PSA industrial nitrogen gas making machine used in Powder
metallurgy
1, Working principle of PSA nitrogen Generator:
Pressure swing adsorption nitrogen production device is a new type
of air separation equipment, with compressed air as the raw
material and carbon molecular sieve as the adsorbent.Using PSA
process under the normal temperature and low pressure, the pressure
swing adsorption (PSA) oxygen and nitrogen in carbon molecular
sieve using the air diffusion rate is different, through the
programmable controller control valve opening and closing, realize
the pressure adsorption and vacuum stripping process, complete
separation oxygen, nitrogen, get high purity nitrogen, nitrogen
purity and gas production rate can be adjusted according to the
customers' needs.
Our company produces the ordinary nitrogen type nitrogen making
device, nitrogen purity is 98 ~ 99.99%, nitrogen production volume
is 5 ~ 1000 Nm3 / h, the ordinary nitrogen type nitrogen making
device with nitrogen gas purification device becomes a high purity
nitrogen type of nitrogen making system, nitrogen purity can reach
to 99.9995%, the oxygen levels in the nitrogen is less than or
equal to 5 PPM, dew point less than or equal to - 60 ℃.
2, Product Features:
- The raw air is taken from nature and nitrogen is produced by
supplying compressed air and power.Low energy consumption, low
operating cost.
- Nitrogen purity is easy to adjust. Nitrogen purity is only affected
by nitrogen exhaust volume.The purity of ordinary nitrogen is
arbitrarily adjusted between 95% and 99.99%;High purity nitrogen
making machine can be adjusted between 99% and 99.999% at user’s
option.
- High degree of automation equipment, gas production fast,
unattended.Nitrogen can be generated within 10-15 minutes after
starting and shutting down by pressing the button.
- The equipment has simple technological process, compact structure,
small floor area and strong adaptability.
- Packing molecular sieve by snowstorm method, avoid powder
phenomenon of molecular sieve caused by high-pressure air shock,
and ensure long time use of molecular sieve.
- Digital display flowmeter with pressure compensation, high
precision industrial process monitoring secondary instrument, with
instantaneous flow and cumulative calculation function.
- Import analyzer online testing, high precision, maintenance free.
- Application Fields
- SMT Industry Application
Nitrogen filling reflow welding and wave soldering, using nitrogen
can effectively restrain the oxidation of solder, improve the
wettability of welding, accelerate the wetting speed, reduce the
production of tin ball, avoid bridging, and reduce welding
defects,DEMING SMT electronics manufacturers with hundreds of sets
of cost-effective pressure swing adsorption nitrogen machine, SMT
industry has a large customer base, SMT industry share of more than
90%.
- Semiconductor silicon industry applications
Semiconductor and integrated circuit manufacturing process of
atmosphere protection, cleaning, chemical recovery, etc. - Semiconductor packaging industry applications
Nitrogen is used for packaging, sintering, annealing, reduction and
storage.Pressure swing adsorption nitrogen production machine helps
the major manufacturers in the industry to win the first
opportunity in the competition, to achieve effective value
enhancement. - Electronic components industry applications
Selective welding, purging and encapsulating with nitrogen.
Scientific nitrogen inert protection has been proved to be an
essential and important link in the successful production of high
quality electronic components. - Application in chemical industry and new material industry
Nitrogen is used to create oxygen free atmosphere in chemical
process, to improve the safety of production process and the power
source of fluid transportation. Petroleum: it can be used for
nitrogen purging of pipeline vessels in the system, nitrogen
filling, replacement and leak detection of storage tanks,
flammability gas protection, as well as diesel hydrogenation and
catalytic reforming.
- Powder metallurgy, metal processing industry
Heat treatment industry application steel, iron, copper, aluminum
products annealing, carbonization, high temperature furnace
protection, low temperature assembly of metal parts and plasma
cutting. - Food, pharmaceutical industry applications
Mainly used in food packaging, food preservation, food storage,
food drying and sterilization, medicine packaging, medicine
replacement gas, medicine transport atmosphere. - Other areas of use
In addition to the use of nitrogen machine in the above industries,
in coal mine, injection molding, brazing, tire nitrogen, rubber
vulcanization and many other fields are widely used.With the
progress of science and technology and the development of society,
nitrogen device is used in more and more fields. On-site gas
production (nitrogen production machine) has gradually replaced the
traditional nitrogen supply methods such as liquid nitrogen
evaporation and bottled nitrogen with its advantages of saving
investment, low cost and convenient use.
4, Composition of PSA nitrogen making machine:
- Compressed air purification system:Carbon molecular sieve is the
key material to determine the production capacity of nitrogen
machine. Since the compressed air provided by air compressor
usually contains oil and water, oil and water will reduce the
adsorption capacity of carbon molecular sieve, so the compressed
air needs to remove oil and water before entering the oxygen and
nitrogen separation system. Firstly, the air is compressed by the
compressor to be 0.75-1.0 MPa and enter air purification system,
the pipeline filter will remove most of the water, oil and
mechanical impurities, and then the freeze drying machine dewaters
by cooling and make the pressure dew point to be 2 ℃ to 10 ℃,
furthermore, the air is processed by the precision filter, super
precision filter and activated carbon degreaser, the air with
pressure 0.75-1.0 MPa, pressure dew point with 2 ℃ to 10 ℃, and the
oil content less clean 0.01 PPm will be got. Compressed air
purification system is composed of pipeline filter, freeze-drying
machine, fine filter, ultra-fine filter, activated carbon deoiler,
automatic sewage valve, ball valve and so on.
- Air tank system: The purpose of the air storage tank system is to
ensure the stability of the gas used in the oxygen and nitrogen
separation system. When the oxygen and nitrogen separation system
is switched, it can prevent the instantaneous airflow velocity from
going too fast, affect the air purification effect, improve the
quality of compressed air entering the adsorber, and help to extend
the life of the molecular sieve.Air tank system consists of air
tank, protective valve, globe valve, ball valve, pressure gauge,
etc.
- Body of Nitrogen making machine:Oxygen and nitrogen separation
system is the core part of air separation. Its main body is two
adsorption towers filled with carbon molecular sieve. When the
clean compressed air enters the adsorption tower, oxygen, carbon
dioxide and trace water are absorbed by the carbon molecular sieve,
and nitrogen is output from the outlet end. When nitrogen is
adsorbed in one column, oxygen, carbon dioxide and water adsorbed
in the molecular sieve can be discharged from the pores by
decompression in the other column to achieve biodesorption of the
molecular sieve.The two columns adsorb and regenerate alternately
and continuously output nitrogen.The main body of nitrogen making
machine is composed of adsorption tower, carbon molecular sieve
filled in the tower, pneumatic valve, muffler, throttle valve,
compression cylinder, pressure gauge and so on.
- Nitrogen buffer system : The main function of nitrogen buffer
system is to balance the pressure and purity of nitrogen separated
from the main body of nitrogen making machine and ensure the
continuous supply of nitrogen.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.At the same time, 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. Nitrogen buffer system consists of buffer tank, flow
meter, dust filter, pressure regulating valve, throttle valve,
protective valve, etc.
- Electrical Control System :The main functions of the electrical
control system are equipment start and stop operation, working
status indicator light display, fault sound-light alarm indication,
purity display and drive pneumatic valve according to the set
program.The electrical control system is composed of programmable
controller, air source triplex, solenoid valve, indicator light,
micro oxygen meter, etc. It is mainly installed in the electric
control cabinet.
5,Technical Parameters
Stable and adjustable pressure, purity and flow to meet different
needs of customers
● Nitrogen output —— 110Nm3/hr
● Purity ——95%
● Pressure ——≤0.7Mpa
● Atmospheric dew point ——≤-45℃
Note: lower oxygen content and dew point requirement, NP-series
nitrogen purification device is optional.
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