| 高温烟气脱除HCl时CO2的影响 |
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| 引用本文： | 林瑜,魏敦崧,陈德珍.高温烟气脱除HCl时CO2的影响[J].煤气与热力,2006,26(3):19-22. |
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| 作者姓名： | 林瑜 魏敦崧 陈德珍 |
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| 作者单位： | 同济大学,热能与环境工程研究所,上海,200092 |
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| 基金项目： | 教育部留学回国人员科研启动基金;中国-丹麦科技合作项目 |
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| 摘 要： | 一般烟气或热解产生的燃气中CO2的体积分数远高于HC l气体,因此在石灰吸收剂高温干式净化HC l气体过程中必须考虑CO2的影响。由于烟气中CO2的作用,很大一部分石灰吸收剂将转变为CaCO3。CO2与HC l气体之间存在着对石灰吸收剂的争夺,从而削弱了HC l气体的净化效果,降低了石灰的有效利用率。采用钠碱溶液处理制成的改性石灰在中高温段的碳酸钙化率较低,能在一定程度上降低CO2对净化反应的不利影响。
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| 关 键 词： | 高温燃气净化 高温烟气净化 HCl气体 CO2 石灰 改性石灰 |
| 文章编号： | L000-4416（2006）03-0019-02 |
| 收稿时间： | 2004-10-11 |
| 修稿时间： | 2004-10-11 |
Influence of CO2 on HCl Removal from High-temperature Flue Gas |
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| LIN Yu,WEI Dun-song,CHEN De-zhen.Influence of CO2 on HCl Removal from High-temperature Flue Gas[J].Gas & Heat,2006,26(3):19-22. |
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| Authors: | LIN Yu WEI Dun-song CHEN De-zhen |
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| Affiliation: | Institute of Thermal and Environmental Engineering, Tongfi University, Shanghai 200092, China |
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| Abstract: | The volume fraction of CO_2 in conventional flue gas or gas generated by pyrolysis is much more than that of HCl gas,so the influence of CO_2 is to be taken into account in the course of high-temperature dry removal of HCl gas by lime(absorbent).A large part of lime will be transformed into CaCO_3 due to the effect of CO_2 in flue gas.There is a competition for lime between CO_2 and HCl gas,thus abating the removal effect of HCl gas,and reducing the effective utilization rate of lime.Compared with lime,the modified lime treated by sodium solution changes into CaCO_3 to a much less extent at moderate and high temperatures,and the negative impact of CO_2 on HCl removal is decreased to some extent. |
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| Keywords: | high-temperature purification of gas high-temperature purification of flue gas HCl gas CO_2 lime modified lime |
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