| 摘要: |
| 以贵州凯里褐煤进行燃烧实验，研究采用CoCl2（负载量20％）改性的活性炭去除烟气中的单质汞。颗粒态汞占烟气总汞的87％，而单质汞占气态汞的80．4％。改性活性炭吸附了气态汞中97％的单质汞，而吸收液只吸收了3％的单质汞。可见改性活性炭也能有效地吸附煤燃烧实验中的烟气汞。实验结果表明，煤中汞的释放率为59．5％，1kg的改性活性炭可以吸附208t煤所产生的烟气中的气态单质汞。 |
| 关键词: 汞 活性炭 吸收 修正 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目（90510009） |
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| Removal of Element Mercury in Coal-burning Gas by Activated Carbon Loaded by Catalysts |
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SHEN Zhe-min, MA Jing, XIANG Fei
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School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China
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| Abstract: |
| The combustion test was carried out with wood coal from KaiLi GuiZhou. In this study, we chose activated carbon modified by CoGl2 （20% loading） to remove the elemental mercury in flue gas. Particulate mercury accounted for 87% of total mercury, while elemental mercury accounted for 80.4% of gaseous mercury. Modified activated carbon adsorbed 97% of elemental mercury in gaseous mercury; however, the absorption liquid only absorbed 3% of elemental mercury. Consequently, modified acti- vated carbon was able to absorb gaseous mercury in coal combustion test efficiently. The results showed that the release ratio of Hg in coal was 59.5% , and 1 kg of modified activated carbon could absorb the gaseous elemental mercury in flue gas yielded by 208 t of coal. |
| Key words: mercury activated carbon adsorption modification |
