发明授权
US4994098A Production of oxygen-lean argon from air 失效
从空气中生产贫氧氩

Production of oxygen-lean argon from air
摘要:
The present invention is an improvement to a method of producing crude argon directly from the cold box of a cryogenic air separation unit. The improvement is the production of crude argon containing greatly decreased concentrations of oxygen, i.e.
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