| 摘要 |
A system for capturing CO 2 from a flue gas stream comprises:
- a CO 2 absorber (18) comprising first and second absorption stages (54, 56),
- first contacting means (58, 60) for contacting, in the first stage (54), the flue gas stream (FG) with a mixture of CO 2 -lean ammoniated solution and recirculated CO 2 -enriched ammoniated solution,
- second contacting means (62, 64) for contacting, in the second stage (56), partly cleaned flue gas stream with the recirculated CO 2 -enriched solution,
- a device (66) for collecting the mixture of CO 2 -lean solution and recirculated CO 2 -enriched solution,
- a pipe (20) for passing a first portion of the collected CO 2 -enriched solution for regeneration,
- a CO 2 -lean solution pipe (34) for passing the CO 2 -lean solution from regeneration to the first stage (54), and
- a recirculation pipe (74) for passing a second portion of the collected CO 2 -enriched solution to the second stage (56). |
