The Plant uses normal temperature molecular sieve adsorption, medium pressure booster expansion reflux flow.
Raw air is sucked from the atmosphere, It is going through filter for removal of dust and mechanical impurities., then it is compressed to a certain degree by single stage screw compressor, via end stage cooler, air pre-cooling system, the air is cooled to approx. 8ºC. After water separation moisture is separated in water separator and then it goes to purifier for removal of moisture, CO2, C2H2 and hydrogen dioxide.
Then most part of air enters main heat exchanger to be cooled to saturated tempt. and partly is liquefied to the lower part of lower column; another part of air is compressed to a certain degree through two stage compression booster, via end stage cooler enters into oxygen heat exchanger to be cooled to be near saturated temperature, then after throttle goes to lower column. Through lower column pre-distillation we can get enriched oxygen liquid air from the bottom of the column. After cooling through sub-cooler, after throttled it goes to the middle part of upper column as reflux liquid for rectification. WN is obtained from the top of lower column, after condensed through condenser-evaporator, a part of WN is used as rectification reflux liquid for lower column; another part after cooling through sub-cooler and after throttling goes to the top of upper column as rectification reflux liquid. Pure liquid oxygen is obtained from the bottom of upper column, and it is condensed by condenser-evaporator. Liquid oxygen is abstracted from the bottom after cooling through sub-cooler, then it goes to LOX pump to be pressurized. It is evaporated in O2 heat exchanger and is reheated to normal tempt and then directly goes to oxygen filling ramp for filling of cylinders.
WN from the top of upper column goes through sub-cooler, the ower part of main heat exchanger to be reheated to a certain tempt. Then it goes to expansion turbine to create cold and returns to sub-cooler and main heat exchanger again to be reheated to normal tempt. A part of it passes to purifier as regenerating gas resource and another part goes to be vented partly.
Products |
Capacity
(m3/h) |
Purity
(%) |
Pressure
(Mpa) |
Dewpoint
( ºC ) |
GO(Gases-oxygen) |
80±5% |
≥99.7 |
15 |
-70 |
Ntinuous operation period |
≥15 months |
Defrost Period |
12 Hours |
Starting time |
6-9 Hours |
Process air |
Compressor Capacity |
750 Nm3/h |
Working Pressure |
1.25 MPa |
Power |
Air compressor |
110KW |
Air pre-cooling system |
3.7 KW |
Power of heater |
18KW( 5KW) |
(15 MPa)
Liquid Oxygen Pump |
4 KW |
Raw Air Composition |
N2+Ar |
O2 |
H2O |
Σ |
|
V% |
≥79.0 |
≤21.0 |
Saturated |
100.0 |
|
Atmosphere Condition |
Atmosphere Temperature |
20 ºC |
Atmospheric Pressure |
968mba |
Power Condition
|
Voltage |
380±5%V |
Frequency |
50 HZ |
AC Three phase four wire system, neutral point directly earthed |
Hangzhou Union Industrial Gas-equipment Co., Ltd. Are a technology enterprise specialized in R&D, design and manufacture of various air separators and cryogenic application equipments. Our company always insists on taking the technology as the motility, emphasizing technique and products innovation, cooperating with many scientific and research institutes, academic schools which are in the same industry range with us. On the basis of integration into advanced design concept and strict management procedure and the outstanding production technique and give the enthusiastic service support. Decisive adoption of new processes, new technology, the R&D and manufacturing capability of the company is enhanced and the development is oriented to the Saving Energy variety and perfection of the products.
The products of the company cover the fields of metallurgy, petrochemical industry, electronics, machinery, construction material, Medicine, New materials which have been well received all over the country and also been supplied to many Asian and African countries(Russia, Kazakhstan, Tajikistan, India, Bangladesh, Thailand, Philippines, North Korea, Mongolia, Equatorial Guinea, Botswana, Zambia, Angola, Tanzania). The main products are: the medium and small size oxygen nitrogen plants, liquid oxygen and liquid nitrogen plants, oxygen and nitrogen liquefaction plants, high purity nitrogen generators, molecular sieve pressure swing adsorption plants and PSA (VPSA) oxygen (nitrogen) plants.
In addition to provide high-quality products, our company also undertakes technical consulting, engineering design, equipment installation, technical training and other services, and implementation of the turn-key project. Sincerely welcome your contact and visit to the company.
