煤基吸附剂脱除燃煤电厂烟气中汞的研究进展  

Carbonaceous sorbent for mercury removal in coal-fired flue gas of power plants

作　　者：吴鹏[1,2] 苗文华[1,2] 姜军清[1,2] 张旭辉[1,2] 王娟[1,2] 

机构地区：[1]国网电力科学研究院,江苏南京210003 [2]北京国电富通科技发展有限责任公司,北京100071

出　　处：《洁净煤技术》2012年第6期102-105,119,共5页Clean Coal Technology

基　　金：国家科技部科研院所专项基金(2011EG121189)

摘　　要：燃煤电厂产生的烟气是汞排放的主要来源之一。概述了目前电厂烟气中汞污染情况和主要脱汞方法,介绍了煤基吸附剂在汞污染控制中的应用。煤基吸附剂应用于烟气脱汞时其吸附活性与多种因素有关,总结了烟气中SO2,CO2,CO,HCl等成分对活性炭吸附剂脱汞性能的影响,讨论了不同吸附温度和炭汞比例下活性炭的吸附效率,分析了不同改性方法对活性炭脱汞效率的影响机理。针对活性炭脱汞成本较高的问题,介绍了飞灰吸附剂的脱汞性能及吸附温度和入口汞含量对其的影响。此外,褐煤活性焦成本低廉,具有丰富的比表面积和孔径结构,化学活性高,吸附性能好,是一种很有前景的电厂烟气脱汞用吸附剂。The flue gas of coal-fired power plants is one of the major sources of mercury emissions. Provide an overview of current power plant flue gas mercury pollution and major mercury removal methods, introduce the coal- based adsorbent used in mercury pollution control. The adsorption activity of coal-based adsorbent is related to a variety of factors. Summarize the effects of SO2, CO2, CO, HCl and others in flue gas on mercury removal performance of activated carbon, discuss the activated carbon adsorption efficiency on different adsorption temperature and carbon-mercury ratio, analyse the effects of different modification methods on mercury removal efficiency and the impact mechanism. As the high cost of activated carbon application, introduce the mercury removal properties of fly ash, then summarize the effects of adsorption temperature and inlet mercury content on fly ash adsorption efficiency. The lignite active coke has the advantages of low cost, abundant surface area and pore structure, high chemical activity and great adsorption properties, is a promising mercury removal adsorbent for power plant flue gas.

关 键 词：活性炭 褐煤活性焦 烟气脱汞 吸附 

分 类 号：TD849[矿业工程—煤矿开采] X701.7[矿业工程—矿山开采]