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Study on Species Transformation and Emission Characteristic for Mercury during Coal Combustion in Power Station with Sea Water Flue Gas De-Sulphurization

Abstract

汞是一种剧毒、高挥发性、易在生物体内富集并导致病变的持久性环境污染物。由于原煤中含有汞,耗煤量巨大的燃煤电站成为环境中汞污染的最主要人为排放源。目前,燃煤电站汞排放特性及控制技术研究已成为各国研究的前沿及热点。 本文以燃煤过程产生的汞污染物为对象,以配有完整烟气净化装置的大型滨海电站燃煤锅炉烟气的排放流程为主线,研究燃煤过程汞的形态转化与排放特性,结合锅炉燃煤烟气净化工艺,讨论汞污染的控制技术。主要内容和结果如下: (1)论文研究了燃煤电站常用的烟煤中汞的含量,分析汞含量与煤种的相关性,发现煤中汞含量与硫含量具有较强的相关性。本研究采用小型管式炉进行燃煤排放烟气中汞的形态分布模拟实验。在6...Mercury has been identified as a persistent pollutant with characteristics of high toxicity, volatility, bioaccumulation and mutagenicity to human health and environment. Since the coal contains mercury, the coal-fired power plants have become the main source for anthropogenic discharge of mercury to the atmosphere. The emission features and the control of mercury exhausted from coal-fired power p...学位:工学博士院系专业:海洋与环境学院环境科学与工程系_环境工程学号:B20043401

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