PROMOTER-IMPROVED COOLED AMMONIA-BASED SYSTEM AND METHOD OF REMOVING CARBON DIOXIDE FROM FLUE GAS FLOW Russian patent published in 2013 - IPC B01D53/62 B01D53/34 

FIELD: process engineering.

SUBSTANCE: invention relates to absorption of carbon dioxide from gas flow. Proposed method comprises the following steps: bringing flue gas flow bearing carbon dioxide in contact lean solution of filling agent. Note here that the latter comprises ammonia-bearing ionic cooled-ammonia-based solution or suspension, and promoter selected from piperazine or enzyme system to obtain enriched solution of filling agent. It comprises also regeneration of said enriched solution with release of carbon dioxide and sedimentation of ammonia bicarbonate from said enriched solution to produced lean solution of filling agent. Invention covers also increasing sedimentation of ammonia bicarbonate solid particles from cooled ammonia-based ammonia-bearing ionic solution for removal of carbon dioxide from flue gas flow.

EFFECT: accelerated formation of ammonia bicarbonate in lean solution of filling agent.

6 cl, 5 dwg