|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||95/54 ; 96/9|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 33 인용 특허 : 0|
High-purity oxygen is recovered from air by a high-temperature ion transport membrane system comprising two or more stages in which each stage operates at a different feed side to permeate side pressure ratio. Operation of the system in multiple stages at controlled pressure ratios produces oxygen at a lower specific power consumption compared with single-stage operation.
A process for recovering oxygen from an oxygen-containing gas mixture comprising the steps of: (a) compressing said oxygen-containing gas mixture; (b) heating the resulting compressed gas mixture of step (a); (c) passing the resulting compressed and heated mixture of step (b) into a first membrane separation zone comprising an oxygen-selective ion transport membrane which separates said zone into a feed side and a permeate side, and withdrawing from said zone a first high-purity oxygen permeate stream and a first oxygen-containing non-permeate stream; an...