Removal of mercury from coal by mild pyrolysis and leaching behavior of mercury
Removal of mercury from coal by mild pyrolysis and leaching behavior of mercury
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DOI：
10.1016/j.fuel.2003.05.004
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发表时间：
2004-04-01
期刊：
影响因子：
7.4
通讯作者：
Ohki, A
中科院分区：
文献类型：
--
作者：
Iwashita, A;Tanamachi, S;Ohki, A
在300和400 degreesC（温和热解）下对各种类型的煤进行热解，并测定了煤中汞的去除。不同煤种对汞的去除率差异很大，在20 ~ 80%之间。去除率与煤的比表面积和粒度无关。采用3-巯基丙酸（MPA）等含硫螯合剂对煤中汞的浸出进行了试验。不同煤种的汞浸出率也有很大差异。在MPA浸出中的%Hg浸出程度与在温和热解中的%Hg去除程度之间存在良好的相关性。(C)2004 Elsevier Ltd.保留所有权利。
Various types of coals were subjected to the pyrolysis at 300 and 400 degreesC (mild pyrolysis), and the removal of Hg from coal was determined. The removal efficiency of Hg greatly varied with coal type from 20 to 80%. The removal efficiency was dependent neither on the specific surface area of coal nor on the particle size of coal. The leaching of Hg from coal was tested using sulfur-containing chelating agents such as 3-mercaptopropionic acid (MPA). The Hg leaching efficiency also varied greatly with coal type. There was a good correlation between the degree of %Hg leaching in the MPA leaching and that of %Hg removal in the mild pyrolysis. (C) 2004 Elsevier Ltd. All rights reserved.