O2/CO2方式下钙基吸收剂在脱硫过程中微观结构变化的研究

工程热物理学报 , 2001, 22(1): 127-129.

O2/CO2方式下钙基吸收剂在脱硫过程中微观结构变化的研究

王宏 ^1, , 张礼知 ^2, , 陆晓华 ^3, , 郑楚光 ^4,

1.National Laboratory of Coal Combustion,Huazhong University of Science and Technology,

2.National Laboratory of Coal Combustion,Huazhong University of Science and Technology,

3.National Laboratory of Coal Combustion,Huazhong University of Science and Technology,

4.National Laboratory of Coal Combustion,Huazhong University of Science and Technology,

基金项目: 国家自然科学基金(59806005) 华中理工大学校科研和教改项目(NJ121003)

关键词：二氧化碳 , 钙基吸收剂 , 脱硫 , 孔隙结构

MICROSTRUCTURE CHANGES OF CALCIUM--BASED SORBENT DURING DESULFURIZATION IN O2/CO2 MIXTURE

本文研究了O2/CO2方式下钙基吸收剂在脱硫过程中微观结构的变化。研究结果表明，不同浓度的CO2对孔隙结构的影响完全不同；且提高温度有利于改善高浓度CO2气氛下钙基吸收剂煅烧后的孔隙结构，较之空气气氛，高浓度CO2气氛更有利于高温下炉内喷钙脱硫。

This paper reports on a study of microstructure changes of calcium-basedsorbent during desulfurization in O2/CO2 mixture. It's found thatpronounced influence on microstructure of calcium-based sorbent lies betweenhigh CO2 concentration and low CO2 concentration. The results indicatethat high CO2 concentration is better for capture of SO2 compared toair condition at high temperature accounting for minimizing sintering of CaOand plugging of reaction product CaSO4.

参考文献

[1]	A M Wolsky;E J Danniels;K S Jody .Recovering CO2from Large and Medium-Size Stationary Combusters[J].Journal of the Air And Waste Management Association,1991,41(04):449-454.
[2]	Borgwardt RH .Sintering of Nascent Calcium Oxide[J].Chemical Engineering Science,1989,44(01):53-60.

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