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Air separation


Air separation Equipment Supplier

Non-cryogenic processes

Pressure swing adsorption provides separation of oxygen or nitrogen from air without liquefication. The process operates around ambient temperature; a zeolite (molecular sponge) is exposed to high pressure air, then the air is released and an adsorbed film of the desired gas is released. The size of compressor is much reduced over a liquification plant, and portable oxygen concentrators are made in this manner to provide oxygen-enriched air for medical purposes. Vacuum swing adsorption is a similar process, but the product gas is evolved from the zeolite at sub-atmospheric pressure.

Membrane technologies can provide alternate, lower-energy approaches to air separation. For example, a number of approaches are being explored for oxygen generation. Polymeric membranes operating at ambient or warm temperatures, for example, may be able to produce oxygen-enriched air (25-50% oxygen). Ceramic membranes can provide high-purity oxygen (90% or more) but require higher temperatures (800-900 deg C) to operate. These ceramic membranes include Ion Transport Membranes (ITM) and Oxygen Transport Membranes (OTM). Air Products and Chemicals Inc and Praxair are developing flat ITM and tubular OTM systems, respectively.

Membrane gas separation is used to provide oxygen poor and nitrogen rich gases instead of air to fill the fuel tanks of jet liners, thus greatly reducing the chances of accidental fires. Conversely, membrane gas separation is currently used to provide oxygen enriched air to pilots flying at great altitudes in aircraft without pressurized cabins.


Large amounts of oxygen are required for coal gasification projects; cryogenic plants producing 3000 tons/day are found in some projects. Insteelmaking oxygen is required for the basic oxygen steelmaking. Large amounts of nitrogen with low oxygen impurities are used for inerting storage tanks of ships and tanks for petroleum products, or for protecting edible oil products from oxidation.

Zhejiang Yuanda Air Separation Equipment Co., LTD  

YDGET have a range of PSA nitrogen & oxygen generators, membrane nitrogen & oxygen generators, nitrogen purification systems etc, and are widely used in industries of petroleum, oil & gas, chemicals, electronics, metallurgy, coals, pharmaceuticals, aerospace, autos, glass, plastics, food, medical treatment, grain, etc. With years research in air separation technology and rich solution experiences in various industries, YDGET sticks to providing our clients with more reliable, more economical, more convenient professional gas solutions.

We have an experienced professional team always ready to be at your service. The sales engineers carefully analyze your specified requirements and offer suitable solutions for you. The after-sale service system guarantees swift response to your problems within 24 hours and their resolutions in the shortest time. YDGET is responsible for after-sales services to nitrogen/oxygen generators and other related equipment offered by us.

YDGET is dedicated to supplying with our customers with more reliable, more economical and more convenient air separation solutions and professional service. 

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