1CO2 capture using lime as sorbent in a carbonation/calcination cycle

In order to mitigate the CO2 emissions from coal power generation systems efforts are being devoted worldwide to improve the existing capture technologies and to develop lower cost processes to separate CO2. The lime carbonation/calcination cycle is based on separation of CO2 with the use of lime as an effective CO2 sorbent. Previous work has been carried out in an entrained flow calciner studying the flash calcination process for the preparation of lime [1]. The current work is focused on advanced dry CO2 capture system applicable for both PF and CFB boilers, using lime as sorbent. A twin fluidized bed carbonator/calciner system is used in order to study the impact of flue gas contaminants and sorbent post-treatment for sulphur separation, to evaluate the optimized calcination process (with O2-firing, steam addition, varying CO2 levels, etc.). Topic: Capture and Separation /Advanced Concept