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第 54 卷第 2 期化工学报 Vol 54 №2
2003 年 2 月 Journal of Chemical Industry and Engineering (China) February 2003
研究简报贝壳和石灰石作为燃煤固硫剂的微观结构特性
路春美赵建立韩奎华
(山东大学能源与动力工程学院,山东济南 250061)
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关键词贝壳石灰石微观结构扫1 描电镜固硫特性 2
中图分类号 X 511 文献标识码 A 文章编号1 0438 - 1157 (2003) 02 - 0273 - 04
MICROSTRUCTURAL CHARACTERISTICS OF SHELL AND
LIMESTONE AS BURNING COAL SULFUR SORBENT
LU Chunmei ,ZHAO Jianli and HAN Kuihua
( Institute of Energy and Power Engineering , S handong U niversity ,
Jinan 250061 , S handong , China)
Abstract The microstructure of the raw ,calcined ,and desulfurized samples of shell and limestone was detected
and analyzed by SEM Their ability of capturing SO2 was verified by using LCT 2 thermobalance and the high
temperature tube reactor The results showed that the better pore structure and smaller gas diffusion resistance of
shell were in favor of the inner reaction for SO2 gas Shell had higher calcium utilization ratio than that of
limestone especially under the conditions of high reaction temperature and the increased reaction time The bigger
difference of the inner structure was found in the reaction of sulfation after calcination and direct sulfation In
direct sulfation , the reaction was restrained because of the bad pore connectivity , while the former reaction took
place with good pore connectivity
Keywords shell ,lime