燃煤电厂脱硫石膏汞形态及热稳定性分析

doi:10.11930/j.issn.1004-9649.2013.9.145.4

中国电力 ›› 2013, Vol. 46 ›› Issue (9): 145-149.DOI: 10.11930/j.issn.1004-9649.2013.9.145.4

燃煤电厂脱硫石膏汞形态及热稳定性分析

殷立宝¹, 高正阳², 钟俊², 郑双清², 陈传敏²

1. 广东电网公司电力科学研究院,广东广州 510080; 2. 华北电力大学能源动力与机械工程学院,河北保定 071003

收稿日期:2013-03-06 出版日期:2013-09-23 发布日期:2015-12-10
作者简介:殷立宝（1977—）,男,黑龙江哈尔滨人,高级工程师,从事洁净煤发电技术及大型火电站锅炉运行优化研究。
基金资助:
广东省省部产学研结合重点项目（2012B091000166）

Analysis of Mercury Species and Thermal Stability of Desulphrized Gypsum in Coal-fired Boiler

YIN Li-bao¹, GAO Zheng-yang², ZHONG Jun², ZHENG Shuang-qing², CHEN Chuan-min²

1. Electric Power Research Institute of Guangdong Power Grid Corporation, Guangzhuo 510080, China; 2. School of Energy Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China

Received:2013-03-06 Online:2013-09-23 Published:2015-12-10

摘要/Abstract

摘要： 分析燃煤电厂脱硫石膏中汞的化合物形态及其释放规律,对脱硫石膏的利用具有指导意义。利用X-射线荧光光谱仪（XRF）对2个火电厂石膏样品进行成分分析;为确定石膏中汞的热稳定性和形态分布,对各石膏样品和石膏滤渣样品进行2种加热方式的热处理,测定热处理前后各样品的失重率和汞含量。研究结果表明, 2个电厂脱硫石膏汞的初始释放温度不同,分别为100 ℃和200 ℃;石膏及石膏滤渣样品的快速释放温度在200~400 ℃;所有样品在500 ℃时基本完成汞的释放;石膏滤渣中的总汞含量有所减少;脱硫石膏中含有的汞化合物主要有HgCl₂和HgS。

关键词: 燃煤电厂, 湿法脱硫, 脱硫石膏, 汞

Abstract: Identifying the Hg species and release characteristics have guiding significance for WFGD gypsum utilization. The X-ray fluorescence spectrometry(XRF) was used to make the composition analysis of the two gypsum samples of the coal-fired power plant. In order to determine the thermostability and species distribution of Hg in gypsum, the gypsum sample and gypsum residue sample were heated by two heating method and the gypsum weight loss and Hg contents were measured after heating treatment. The results show that the Hg release began at 100 ℃ and 200 ℃ respectively for the two gypsum samples; the rapid release occurred at the temperature between 200 ℃ and 400 ℃; the Hg release finished at 500 ℃for all the gypsum samples; the Hg in gypsum residue decreased and the main Hg compounds in WFGD were HgCl₂ and HgS.

Key words: coal-fired plant, wet flue gas desulphurization (WFGD), desulphrized gypsum, mercury

中图分类号:

X773

殷立宝, 高正阳, 钟俊, 郑双清, 陈传敏. 燃煤电厂脱硫石膏汞形态及热稳定性分析[J]. 中国电力, 2013, 46(9): 145-149.

YIN Li-bao, GAO Zheng-yang, ZHONG Jun, ZHENG Shuang-qing, CHEN Chuan-min. Analysis of Mercury Species and Thermal Stability of Desulphrized Gypsum in Coal-fired Boiler[J]. Electric Power, 2013, 46(9): 145-149.

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https://www.electricpower.com.cn/CN/Y2013/V46/I9/145

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燃煤电厂脱硫石膏汞形态及热稳定性分析

Analysis of Mercury Species and Thermal Stability of Desulphrized Gypsum in Coal-fired Boiler

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燃煤电厂脱硫石膏汞形态及热稳定性分析

Analysis of Mercury Species and Thermal Stability of Desulphrized Gypsum in Coal-fired Boiler

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