VPSA Oxygenerator

Short Description:

The VPSA Oxygen Generator is a pressurized adsorption and vacuum extraction oxygen generator. Air enters the adsorption bed after compression. A special molecular sieve selectively adsorbs nitrogen, carbon dioxide and water from the air. The molecular sieve is then desorbed under vacuum conditions, recycling high purity oxygen (90-93%). VPSA has a low energy consumption, which decreases with increasing plant size.
Shanghai LifenGas VPSA oxygen generators are available in a wide range of models. A single generator can produce 100-10,000 Nm³/h of oxygen with 80-93% purity. Shanghai LifenGas has extensive experience in the design and manufacture of radial adsorption columns, providing a solid foundation for large-scale plants.

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Product Detail

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Product Description:

The VPSA oxygen generator produces enriched oxygen from the atmosphere. It works by using a blower to transport filtered air into an adsorber. The special molecular sieve in the adsorber then absorbs the nitrogen components, while oxygen is enriched and discharged as the product. After a period of time, the saturated adsorbent must be desorbed and regenerated under vacuum conditions. To ensure continuous production and oxygen supply, the system will typically include multiple adsorbers, with one adsorbing while another desorbs and regenerates, cycling between these states.

Application:

VPSA oxygen generators can be used in the following industries
• Iron and steel industry: Blowing high purity oxygen into converters reduces melting time and improves steel quality by oxidising impurities such as carbon, sulphur, phosphorus and silicon.
• Non-ferrous metals industry: Smelting of steel, zinc, nickel and lead requires oxygen enrichment. The pressure swing adsorption oxygen production system is the ideal oxygen supply source for these processes.
• Chemical industry: The use of oxygen in ammonia production improves the process and increases fertiliser yield.
• Power industry: Coal gasification and combined cycle power generation.
• Glass and glass fibre: Oxygen enriched air fed into glass furnaces and combusted with fuel can reduce NOx emissions, save energy, reduce consumption and improve glass

Iron and Stee

Non-ferrous Metals Industry

Chemical Industry

Defense

Steel industry: High-purity oxygen blown into the converter oxidizes impurities such as carbon, sulfur, phosphorus and silicon in iron, which can shorten the smelting time and improve the quality of steel.

Non-ferrous metals industry: Smelting steel, zinc, nickel, lead, etc. require oxygen-enriched, and the pressure swing adsorption oxygen system is the best oxygen supply source.

Chemical industry: The use of oxygen in the production of fertilizer from ammonia can enhance the process and increase fertilizer yield.

Energy industry: Coal gasification co-generation & Coal gasification industry.

Defense: Liquid oxygen can be used as a fuel booster for rockets and supersonic aircraft, and combustibles soaked in liquid oxygen can be used as explosives.

Model Selection

Model	Dimension（LWH）	Outlet Pressure(barg)	Oxygen Purity**	Oxygen Flowrate Nm³/h(0℃)	Power Consumption(kW)*	Weight(T)
LFGO90-11	3.02.02.4	0~5	92±2%	11	12±5%	3.6
LFGO90-23	4.52.22.8	0~5	92±2%	23	24±5%	5.4
LFGO90-35	6.02.43.0	0~3	92±2%	35	33±5%	7.5
LFVGO90-53	7.52.23.3	0~1.5	92±2%	53	21±5%	9.0
LFVGO90-105	9.52.43.3	0~1.5	92±2%	105	38±5%	13.5
LFVGO90-210	13.52.83.5	0~1.5	92±2%	210	77±5%	21

Note : * The unit only consumes electricity, does not need cooling water, and the power consumption data is based on the test values under ambient atmospheric pressure 100KPaA and temperature and humidity 20°C/65%.

** The components other than oxygen are mainly inert gases (nitrogen, argon), and the water content is not more than 3ppm(v)

Taking LFVGO105 as an example, the payback period analysis is shown in the table below,

(Assuming that the market price of liquid oxygen is 1000 RMB(¥)/ton and the unit electricity supply price is 0.8 yuan /kwh, the payback period of Shanghai Lianfeng ambient oxygen supply module LFVGO105 is 1.91 years)

Payback Period（Year）

LFVGO105		Electricity Supply Price（RMB(¥)/KWh）
LFVGO105		0.6	0.7	0.8	0.9	1	1.1	1.2	1.3
LOX Price RMB(¥)/T	800	2.35	2.46	2.59	2.73	2.89	3.07	3.28	3.51
	900	2.02	2.11	2.20	2.30	2.42	2.54	2.68	2.83
	1000	1.78	1.84	1.91	1.99	2.07	2.16	2.26	2.37
	1100	1.58	1.64	1.69	1.75	1.82	1.88	1.96	2.04
	1200	1.43	1.47	1.52	1.56	1.61	1.67	1.73	1.79
	1300	1.30	1.34	1.37	1.41	1.45	1.50	1.54	1.59
	1400	1.19	1.22	1.26	1.29	1.32	1.36	1.40	1.44
	1500	1.10	1.13	1.16	1.18	1.21	1.24	1.28	1.31

The Advantages of VPSA&PSA Oxygen Generator

1. Oxygen supply design by the principle of high quality and high stability ensures the annual operating rate of the equipment is 98%;

2. No need shelter workshop, unattended, which greatly reduces infrastructure investment and its related project approval, fire protection approval and other administrative approvals and procedures.

3. Fully automatic operation, one-button start and stop. Remote IoT monitoring platform technical service is an option.

4. Equipped high-quality and reliable imported switching valves, high-quality ultra-high energy-efficiency rotating equipment, greatly lower oxygen unit power consumption;

5. High-quality, energy-saving, customized, low-attenuation, high-temperature proof and stable imported molecular sieve, guarantee 10-year service lifespan.

6. LFVGO vacuum pressure swing adsorption process, equips screw blower, no need vacuum pump to soften water, high energy-saving efficiency, lower noise.

7. Unique oxygen-efficient and energy-saving compact air cooler design.

8. Liquid oxygen backup provides automatic switching protection.

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