Effects of SO2/NO on CO2 capture characteristics of K2CO3/AI2O3 in a bubbling fluidized-bed reactor
CO2 capture from flue gas with SO2 or NO using K2CO3/Al2O3 was;investigated in a bubbling fluidizedbed reactor.Carbonation and regeneration temperature was 60℃ and 350℃ respectively.The products after carbonation or regeneration process were detected with XRD and barium sulfate gravimetric method.In addition,the physical properties of the sorbent such as granule morphology,S or N element distribution were measured by SEM-EDX.The five cycle test shows that when the carbonation reaction gas contains SO2,sulfur compounds were generated,which reduces the utilization ratio of K2CO3,the amount of CO2 captured in carbonation process and released in regeneration progress decreased with the circulation times.Element S distributes on the particle surface uniformly and the sulfur content of the product is approximate to the input amount of SO2.When the carbonation reaction gas contains NO,the amount of CO2 captured in carbonation process and released in regeneration progress changed little,XRD and SEM-EDX analysis confirmed that nitrogen compound or element N was not detected in the product.It can be concluded that NO does not react with the sorbent while SO2 has great effect on the sorbent (K2CO3/A12O3).A 48 times cycle test with different concentration of SO2 and NO in the carbonation reaction gas was conducted,the failure ratio of the sorbent changed when carbonation reaction gases contains different concentration of the acid gas.After the 48 times circulation test,nitrogen compound or element N was not detected in the products.
CO2 capture K2CO3/Al2O3 carbonation SO2 NO
Ye WU Xiaoping Chen Chuanwen Zhao Wei Dong
School of Energy & Environment,Southeast University,Nanjing 210096,China
国际会议
The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)
哈尔滨
英文
858-863
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）