INFLUENCE OF THERMAL TREATMENT CONDITIONS ON TRANSFORMATION OF TRACE ELEMENTS IN DATONG COAL

GUO Ruixia; YANG Jianli; LIU Dongyan; LIU Zhenyu

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INFLUENCE OF THERMAL TREATMENT CONDITIONS ON TRANSFORMATION OF TRACE ELEMENTS IN DATONG COAL

更新时间：2025-12-10

- INFLUENCE OF THERMAL TREATMENT CONDITIONS ON TRANSFORMATION OF TRACE ELEMENTS IN DATONG COAL
- CIESC Journal Issue 11, Pages: 1603-1607(2003)
- 作者机构：
  
  中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西,太原,030001
- 作者简介：
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- DOI：
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- Online First：25 November 2003，
  
  Published：25 November 2003
- 稿件说明：
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GUO Ruixia, YANG Jianli, LIU Dongyan, et al. INFLUENCE OF THERMAL TREATMENT CONDITIONS ON TRANSFORMATION OF TRACE ELEMENTS IN DATONG COAL[J]. CIESC Journal, 2003, (11): 1603-1607.
DOI：

GUO Ruixia, YANG Jianli, LIU Dongyan, et al. INFLUENCE OF THERMAL TREATMENT CONDITIONS ON TRANSFORMATION OF TRACE ELEMENTS IN DATONG COAL[J]. CIESC Journal, 2003, (11): 1603-1607. DOI：

摘要

在自行设计的加压密闭热解反应器中研究了大同煤中As、Pb、Cr、Cd和Mn等微量有害元素在氮气条件下随温度（300～700℃）、压力（0.1～4MPa）和停留时间的变化规律，同时也考察了热解气氛（氮气和氢气）的影响.结果表明：这5种元素的析出率均随热解温度的升高而升高，随停留时间的延长而增大；反应压力的升高抑制了微量元素的释放；长停留时间，氢气气氛有利于微量元素的挥发；热解过程中As和Cd较其他3种元素表现了较强的挥发性.

Abstract

Transformation of As

Cd and Mn in Datong coal during pyrolysis was studied. The pyrolysis experiment was carried out in a closed stainless steel reactor.The effects of temperature(300—700℃ )

pressure（0.1—4MPa）

and residence time under nitrogen atmosphere on the release of the trace elements were investigated.The influence of reaction atmosphere (N2 or H2) on the emission of the trace elements was also investigated. Results showed that the release of As

Cd and Mn increased with increasing pyrolysis temperature and residence time. Higher pressure inhibited the release of the trace elements. H2 environment resulted in a higher release of the trace elements. In the temperature range studied

As and Cd showed higher volatility than the other three elements during pyrolysis.

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