| abstract |
The utility model relates to a partitioned multistage circulating CO 2 The capture and concentration system comprises a partitioned multistage circulating absorption tower, a lean-rich liquid heat exchanger and a CO 2 Regeneration column, CO 2 Concentration device, partitioned multistage circulating absorption tower, lean and rich liquid heat exchanger and CO 2 Regeneration column and CO 2 The concentrating devices are communicated in sequence, and the partitioned multistage circulating absorption tower comprises a prewashing device and 1-n-1 stage CO which are communicated in sequence 2 An absorption section and an n-stage water washing section, wherein n is more than or equal to 3; 1-n-1 grade CO 2 The absorption section and the n-stage water washing section are connected in series in the absorption tower from bottom to top. The utility model adopts a partitioned multistage circulating absorption tower to exert CO thereof 2 The carbon dioxide collecting device has the advantage of high collecting efficiency, and greatly improves the absorption capacity of carbon dioxide; the adopted multi-stage circulation sequentially removes aerosol from bottom to top, improves carbon capture efficiency, maintains absorption rate and pregnant solution concentration, and reduces carbon emission reduction cost. |