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基于实测的燃煤电厂氯排放特征

邓 双 张 辰 刘 宇 曹 晴 许月阳 王宏亮 张 凡

邓 双, 张 辰, 刘 宇, 曹 晴, 许月阳, 王宏亮, 张 凡. 基于实测的燃煤电厂氯排放特征[J]. 环境科学研究, 2014, 27(2): 127-133.
引用本文: 邓 双, 张 辰, 刘 宇, 曹 晴, 许月阳, 王宏亮, 张 凡. 基于实测的燃煤电厂氯排放特征[J]. 环境科学研究, 2014, 27(2): 127-133.
DENG Shuang, ZHANG Chen, LIU Yu, CAO Qing, XU Yue-yang, WANG Hong-liang, ZHANG Fan. A Full-Scale Field Study on Chlorine Emission of Pulverized Coal-Fired Power Plants in China[J]. Research of Environmental Sciences, 2014, 27(2): 127-133.
Citation: DENG Shuang, ZHANG Chen, LIU Yu, CAO Qing, XU Yue-yang, WANG Hong-liang, ZHANG Fan. A Full-Scale Field Study on Chlorine Emission of Pulverized Coal-Fired Power Plants in China[J]. Research of Environmental Sciences, 2014, 27(2): 127-133.

基于实测的燃煤电厂氯排放特征

基金项目: 国家环境保护公益性行业科研专项(200909025,201009048)

A Full-Scale Field Study on Chlorine Emission of Pulverized Coal-Fired Power Plants in China

  • 摘要: 选取我国4家电厂的6台煤粉锅炉进行现场测试,采集并分析烟气以及飞灰、底渣、脱硫石膏等燃煤副产物样品,以开展燃煤电厂Cl污染物排放特征的研究. 结果表明:燃煤中96.99%以上的Cl析出进入烟气,原烟气中ρ(Cl)范围为10.17~33.63mg/m3.除尘器和石灰石-石膏湿法脱硫装置对烟气中的Cl具有协同脱除作用,尤其是石灰石-石膏湿法脱硫装置. 除尘器对烟气中Cl脱除效率为12.29%~19.86%,石灰石-石膏湿法脱硫装置对烟气中Cl的平均脱除效率为95.22%. 经过燃烧和烟气污染控制装置后,燃煤中0.35%~3.01%的Cl转移到底渣中,6.46%~15.00%的Cl转移到飞灰中,68.88%~77.31%通过脱硫废水排放,9.19%~15.95%的Cl转移到脱硫石膏中;只有2.21%~5.54%的Cl排入大气中,净烟气ρ(Cl)仅为0.34~1.38mg/m3. 目前我国燃煤电厂Cl污染的主要问题是妥善处理脱硫石膏和废水,以防止Cl的二次污染.

     

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出版历程
  • 收稿日期:  2013-07-15
  • 修回日期:  2013-10-29
  • 刊出日期:  2014-02-25

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