FIELD: chemistry.
SUBSTANCE: invention can be applied in environment protection by CO2 extraction and recovery from waste gas generated by fuel burning. Aggregate for CO2 extraction includes absorption tower 13 where CO2 containing gas and CO2 absorbing solution is fed. CO2 containing gas contacts CO2 absorbing solution to obtain concentrated solution of CO2 14, which is transported to recovery tower 15, where weak solution 16 is obtained from it. Recovery tower 15 incorporates heating element 30 heating concentrated solution 14 by generated steam. Additionally the aggregate includes second transport line for transporting weak solution 16 from recovery tower 15 to absorption tower 13 and first transport line for transporting concentrate solution 14 from upper point of recovery tower 15 by pipeline 32 to lower point. In heat exchanger 23 heating of concentrated solution 14 by weak solution 16 is performed.
EFFECT: reduced power cost.
7 cl, 1 tbl, 6 dwg
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