Influence of gas components on removal of SO2 from flue gas in the semidry FGD process with a powder–particle spouted bed

✍ Scribed by X Ma; T Kaneko; G Xu; K Kato

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 154 KB
• Volume: 80
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/s0016-2361(00)00130-7

✦ Synopsis

The in¯uences of CO 2 and O 2 on SO 2 removal from ¯ue gas using a powder±particle spouted bed were investigated. The experimental results showed that O 2 concentration does not affect SO 2 removal from ¯ue gas in the experimental range. The in¯uence of CO 2 on SO 2 removal was found to depend on the approach to saturation temperature (DT a ), which is the difference between bed temperature and adiabatic saturation temperature. The smaller the value of DT a was, the weaker the in¯uence of CO 2 became. Finally, when the value of DT a was smaller than 16 K, SO 2 removal was hardly affected by the presence of CO 2 . In addition, about 40% of the sulfate in the total of sul®te and sulfate was found in the spent SO 2 sorbent, and the mole fraction appeared to be independent of DT a and the CO 2 concentration in the ¯ue gas.