Patent ID: 9278314
Filing Date: 2016-03-08
CPC Classification: B01D,Y02A,Y02C

Claim Text:
1. A method, comprising: receiving a gas stream, the gas stream comprising a target gas component and at least one acid gas, the at least one acid gas being different from the target gas component; contacting the gas stream with a sorbent to remove at least a portion of the target gas component to form a purified gas stream and a loaded sorbent comprising the removed target gas component, the sorbent also removing and the loaded sorbent also comprising a portion of the at least one acid gas; removing at least most of the removed target gas component from the loaded sorbent to form a lean sorbent comprising at least most of the removed portion of the at least one acid gas and/or a salt thereof; and contacting the lean sorbent with a regeneration solution to remove at least most of the removed portion of the at least one acid gas and/or a salt thereof and form for recycle to the gas stream contacting step the sorbent, wherein the target gas component is a carbon oxide, wherein the at least one acid gas is one or more of a sulfur oxide, a nitrogen oxide and hydrogen sulfide, wherein the sorbent is an amine-base sorbent, and wherein the regeneration solution has a pH of at least pH 10.