Release Behavior of As, Hg, Pb, and Cd during Coal Gasification
Release Behavior of As, Hg, Pb, and Cd during Coal Gasification
复制标题
煤气化过程中As、Hg、Pb、Cd的释放行为
DOI：
10.1080/15567030802606178
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发表时间：
2010-02
影响因子：
2.9
通讯作者：
Feng, J.
中科院分区：
文献类型：
--
作者：
Zhong, L.;Xie, K-C.;Li, W-Y.;Feng, J.
摘要采用固定床反应器研究了义马煤气化过程中As、Hg、Pb、Cd的释放行为。用XRD和连续化学萃取法测定了它们在煤和气化残渣中的赋存状态。铅主要与母煤中的矿物质形成有关。大部分Cd和As与有机质和硫化物稳定结合。汞主要是与有机物结合的汞，但在煤炭气化过程中很容易发生变化。结果表明，随着气化温度的升高，As、Hg、Pb和Cd的析出率均增大，尤其是高温CO2气氛下Pb和As的析出率增大。在本文研究的有毒微量元素中，汞和镉被发现是更易挥发，并在气相中富集，而铅和砷主要是在煤气化过程中转移到固相。
Abstract The release behavior of As, Hg, Pb, and Cd in Yima during coal gasification was investigated in a fixed-bed reactor. Their modes of occurrence in coal and residues after gasification were determined by XRD and sequential chemical extraction. Pb is mostly associated with mineral matter formations in parent coal. A large proportion of Cd and As is stably associated with organic matter and sulfides. Hg is mainly that of being bound to organic matter but could be easily changed during coal gasification. It is found that bleeding ratios of As, Hg, Pb, and Cd increased with an increase of the gasification temperature, especially for Pb and As under CO2 atmosphere at high temperature. Among the toxic trace elements studied herein, Hg and Cd were found to be more volatile and enriched in the gas phase while Pb and As were mainly relegated to the solid phase during coal gasification.
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影响因子：
7.4
作者：
G. P. Reed;A. Ergüdenler;J. Grace;A. Watkinson;A. A. Herod-A.;D. Dugwell;R. Kandiyoti
通讯作者：
G. P. Reed;A. Ergüdenler;J. Grace;A. Watkinson;A. A. Herod-A.;D. Dugwell;R. Kandiyoti
DOI：
10.1016/c2013-0-00949-8
发表时间：
1990-07
期刊：
The Astrophysical Journal Supplement Series
影响因子：
--
作者：
D. J. Swaine
通讯作者：
D. J. Swaine
DOI：
10.5860/choice.28-3100
发表时间：
1983
期刊：
--
影响因子：
--
作者：
V. Valković
通讯作者：
V. Valković
影响因子：
7.4
作者：
R. Yan;D. Gauthier;G. Flamant
通讯作者：
R. Yan;D. Gauthier;G. Flamant
影响因子：
7.5
作者：
FINKELMAN, RB
通讯作者：
FINKELMAN, RB