METHOD AND DEVICE FOR SEPARATION OF GAS MIXTURE Russian patent published in 2016 - IPC B01D53/14 

FIELD: gas industry.

SUBSTANCE: invention is aimed at creation of method of separating gases in fed mixed gas stream and apparatus for implementing said method. Method according to invention includes: i) bringing mixed gaseous stream fed with liquid absorbent in absorption column under pressure of 1 bar or more, wherein said liquid absorbent is selective in relation to absorption of one or more gases in fed mixed gas flow so that portion of gas in fed mixed gas flow absorbed by liquid absorbent, which leads to production of enriched with liquid absorbent; II) regeneration at least part of liquid absorbent by contacting liquid enriched absorbent with desorption membrane, at that pressure on side of penetration of desorption of membrane at least 1 bar higher than pressure on side of penetration of desorption of membrane to at least part of absorbed gas desorbed of rich liquid absorbent and flows through desorption membrane, thereby forming depleted liquid absorbent; and iii) recirculation of at least part of depleted liquid absorbent at stage i) to contact with supplied mixed gas flow.

EFFECT: invention enables to use cost effective regeneration of absorbent.

15 cl, 4 dwg