Reaction Behavior of Sulfur Dioxide with Ammonia
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- 作者：Yanxia Guo ; Zhenyu Liu ; Zhanggen Huang ; Qingya Liu ; and Shijie Guo
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2005
- 出版时间：December 21, 2005
- 年：2005
- 卷：44
- 期：26
- 页码：9989 - 9995
- 全文大小：156K
- 年卷期：v.44,no.26(December 21, 2005)
- ISSN：1520-5045
文摘
To understand the sulfur recovery behavior during regeneration of SO2-adsorbed sorbents inNH3, the reactions of SO2-NH3-H2O in the absence of O2 are studied in a temperature rangeof 10-80 
C and feed NH3/SO2 molar ratios of 1-3. The solid products are analyzed by thermalgravimetric analysis, the element analysis, and the wet chemical analysis. The results showthat the reactions are very fast and the products are mixtures of various types of ammonium-sulfites with (NH4)2SO3 as the main component. A lower temperature, a greater NH3/SO2 molarratio, and a higher water vapor content favor the SO2 conversion to the sulfites. The amount ofthe sulfites collected and their composition are correlated to temperature and the feed NH3/SO2molar ratios.
C and feed NH3/SO2 molar ratios of 1-3. The solid products are analyzed by thermalgravimetric analysis, the element analysis, and the wet chemical analysis. The results showthat the reactions are very fast and the products are mixtures of various types of ammonium-sulfites with (NH4)2SO3 as the main component. A lower temperature, a greater NH3/SO2 molarratio, and a higher water vapor content favor the SO2 conversion to the sulfites. The amount ofthe sulfites collected and their composition are correlated to temperature and the feed NH3/SO2molar ratios.