Oxygen separation device and process

Abstract

The invention relates to an oxygen separation device and process. The oxygen separation device provided by the invention is established by using a mixed conductor oxygen permeable membrane as a base and comprises an air pressurizing system, an oxygen separation system, a vacuuming system and necessary pipelines, valves and gas storage tanks. By adopting the oxygen separation device, air in the atmosphere can be directly separated to obtain oxygen of which the purity is as high as 99.99%, continuous production of high-purity oxygen can be achieved, large-scale oxygen supply demands can be met,in addition, a medium / small-size direct oxygen supply device which is easy to move and is convenient and flexible can be manufactured, the device is small in floor space, simple and convenient in operation process and reliable in operation, and the service life of an oxygen permeable material is long. Compared with the prior art, the device adopts the cheap air as a raw material, is capable of continuously making high-purity oxygen of which the purity is 99.99%, uninterruptedly providing oxygen supply for 24 hours and meeting industrial and laboratory requirements, and has very good application prospects.

Description

technical field [0001] The invention relates to an oxygen separation device and a process, in particular to an oxygen separation device and a process for a multi-channel mixed conductor oxygen permeable membrane, belonging to the technical field of mixed conductor oxygen permeable membrane applications. Background technique [0002] At present, there are two methods of oxygen production that are widely used in industry. One is low-temperature air separation oxygen production: it is characterized by large output and high oxygen purity, and can produce other gases and liquids such as nitrogen and argon at the same time, but it consumes a lot of energy and costs Second, pressure swing adsorption oxygen production: characterized by low purity (purity greater than 92%), small output, but low cost. For large-scale oxygen production, although cryogenic oxygen production technology is relatively mature, it consumes a large amount of power plant energy in the process, accounting for ...

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Problems solved by technology

[0002] At present, there are two methods of oxygen production that are widely used in industry. One is low-temperature air separation oxygen production: it is characterized by large output and high oxygen purity, and can produce other gases and liquids such as nitrogen and argon at the same time, but it consumes a lot of energy and costs High; the second is pressure swing adsorption oxygen production: it is characterized by low purity (purity greater than 92%), small output, but low cost

For large-scale oxygen production, although cryogenic oxygen production technology is relatively mature, it consumes a large amount of power plant energy in the process, accounting for 15% of the investment cost of coal-fired power plants, and there is no possibility of a stepwise decline in energy consumption

However, the pressure swing adsorption oxygen production equipment has the disadvantage of low production capacity, the oxygen production scale is relatively small, up to 150 tons / day, and the oxygen purity is low, only 90-95%.

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