可再生脱汞吸附剂的研究进展

doi:10.16085/j.issn.1000-6613.2016-2392

摘要/Abstract

摘要： 现有的脱汞技术中，在烟道中利用吸附剂将烟气中的汞吸附脱除是综合实际因素考虑最具有发展潜力的一项脱汞技术，为了实现燃煤电厂脱汞技术的环保性和经济性，对可再生脱汞吸附剂的研究十分有必要。本文介绍了脱汞吸附剂的研究现状，卤素改性吸附剂、贵金属改性吸附剂、金属氧化物吸附剂和金属硫化物吸附剂对汞脱除均取得了显著的效果，金属氧化物吸附剂由于其经济性和良好的可再生性是现在可再生吸附剂的研究重点；同时简述了可再生脱汞吸附剂再生方法，有研究学者用热再生法、低温等离子再生法及水洗再生法对脱汞吸附剂进行了再生处理均取得了较好的再生效果，热再生法是目前研究最多、应用最广泛的再生方法，而低温等离子再生法具有环保性和节能性是一项具有前景的再生技术。

关键词: 可再生, 脱汞, 金属氧化物, 热再生, 低温等离子

Abstract: Considering the practical factors,using absorbents to remove mercury in flue gas is the most potential mercury control technology in current technologies,in order to achieve environmental protection and economy in coal-fired plant mercury control,researching the regenerable mercury sorbents is very necessary. This paper introduces the research status of mercury adsorbents,illustrates that halogen modified adsorbent,noble metal modified adsorbent,metallic oxide adsorbent and metallic sulfide adsorbent all have a prominent effect on demercuration,and metallic oxide adsorbent is the key research in regenerable sorbents due to its economy and good regenerability;this paper also briefly describes the regeneration methods,researchers regenerated used mercury sorbents through thermal regeneration,non-thermal plasma regeneration or water washing regeneration and all the regeneration methods made the used sorbents have activity again,thermal regeneration is the most studied and the most widely used method,and non-thermal plasma regeneration is a very promising regeneration technology due to its environment conservation and energy saving.

Key words: regenerable, demercuration, metallic oxide, thermal regeneration, non-thermal plasma

中图分类号:

X511

许静, 段钰锋, 姚婷, 刘猛. 可再生脱汞吸附剂的研究进展[J]. 化工进展, 2017, 36(S1): 442-448.

XU Jing, DUAN Yufeng, YAO Ting, LIU Meng. Research progress on regenerable mercury sorbents[J]. Chemical Industry and Engineering Progress, 2017, 36(S1): 442-448.

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