Gas-liquid absorption reaction between (NH4)2SO3 solution and SO2 for ammonia-based wet flue gas desulfurization
Gas-liquid absorption reaction between (NH4)2SO3 solution and SO2 for ammonia-based wet flue gas desulfurization
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DOI：
10.1016/j.apenergy.2010.03.023
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发表时间：
2010-08-01
期刊：
影响因子：
11.2
通讯作者：
Cen, Kefa
中科院分区：
文献类型：
--
作者：
Gao, Xiang;Ding, Honglei;Cen, Kefa
为了研究亚硫酸铵之间的反应特性。针对某电厂氨基湿法烟气脱硫过程中的主脱硫液和烟气中含有的二氧化硫，在搅拌釜反应器中研究了二氧化硫与亚硫酸铵溶液的气液吸收反应。实验结果表明，当亚硫酸铵浓度低于005 mol/L时，二氧化硫的吸收受气膜和液膜共同控制，而在较高浓度时，二氧化硫的吸收主要受气膜控制。在后一种情况下，发现反应速率相对于亚硫酸铵浓度呈零级。二氧化硫的吸收速率随着入口气体二氧化硫浓度和温度的升高而增大。反应速率相对于二氧化硫浓度为0.6级。 (C) 2010 Elsevier Ltd. 版权所有
In order to investigate the characteristics of the reaction between ammonium sulfite. the main desulfurizing solution, and the flue-gas-contained sulfur dioxide during the process of ammonia-based WFGD (wet flue gas desulfurization) in a power plant, the gas-liquid absorption reaction between sulfur dioxide and an ammonium sulfite solution was studied in a stirred tank reactor. The experimental results indicate that the absorption of sulfur dioxide is controlled by both the gas- and liquid-films when the ammonium sulfite concentration is lower than 005 mol/L, and mainly by the gas-film at higher concentrations In the latter case, the reaction rates are found to be zero-order with respect to the concentration of ammonium sulfite The absorption rates of sulfur dioxide increase as the concentration of sulfur dioxide in inlet gas and the temperature increase. The reaction rate is of 0.6th-order with respect to the concentration of sulfur dioxide. (C) 2010 Elsevier Ltd. All rights reserved