燃煤电厂汞污染控制技术研究
许月阳,薛建明,管一明,王宏亮,王小明,王铮
(国电科学技术研究院(国电环境保护研究院),江苏南京 210031)
Research on Mercury Control Technologies for Coal-fired Power Plants
XU Yue-yang,XUE Jian-ming,GUAN Yi-ming, WANG Hong-liang,WANG Xiao-ming,
WANG Zheng
(GuoDian Science and Technology Research Institute(State Power Environmental Protection Research Institute), Nanjing 210031, Jiangsu Province, China)
ABSTRACT: The article introduces the present situation of the mercury emission in the coal-fired plant .The coal-fired power plant mercury emissions technologies are studied.The various factors affecting mercury emissions reduction technology choice of The coal-fired power plant are analysed.The reference are provided for our country mercury pollution control and emissions about the electric power industry
KEY WORD:coal-fired power plant,mercury,emission,control technology,research
摘要:本文介绍了国内外燃煤电厂汞污染控制现状及要求,研究了燃煤电厂汞污染控制技术,分析了燃煤电厂汞减排技术选择应考虑的各种影响因素,为我国燃煤电厂汞污染控制及减排提供了参考。
关键词:燃煤电厂,汞,排放,控制技术,研究
1 引言
汞是燃煤电厂继烟尘、SO2、NOx后要严格控制的污染物。汞对环境造成的污染主要来源于天然和人为两方面。其中人为排放约占3/4,而通过燃煤燃烧释放的汞占人为排放总量的60%[1]。燃煤烟气中汞存在Hg0、Hg2+、Hgp三种形态 [5]。汞的高电离势特性决定了汞易以原子形态存在,因而汞易迁移难富集,利用一般的污染物控制装置无法有效捕捉而排入大气[2]。
2控制要求及标准
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