燃煤电厂钙法脱硫废水的资源化利用研究

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英文篇名：Research on the resource utilization of calcium desulfurization wastewater in coal-fired power plants 作者：陈文旭 ; 陈侠 ; 宋伟 英文作者：Chen Wenxu;Chen Xia;Song Wei;Tianjin University of Science & Technology; 关键词：脱硫废水 ; 蒸发结晶 ; 钙法脱硫 ; 火电厂 英文关键词：desulfurization wastewater;;evaporation;;calcium desulfurization;;thermal power plants 中文刊名：GYSC 英文刊名：Industrial Water Treatment 机构：天津科技大学; 出版日期：2019-04-20 出版单位：工业水处理 年：2019 期：v.39;No.338 语种：中文; 页：GYSC201904019 页数：4 CN：04 ISSN：12-1087/X 分类号：74-77

摘要

研究了国内电厂钙法脱硫废水的组成并对其相图进行分析,在此基础上对某公司废水进行分阶段连续蒸发实验,最终得到蒸发结晶析盐规律,同时通过直接蒸发结晶分离提纯各盐类物质。实验结果表明:该脱硫废水蒸发析出的无机盐为硫酸钙、一水硫酸镁、一水硫酸镁与氯化钠的混合物。
        The components of calcium desulphurization wastewater of thermal power plants in China have been inve-stigated and the related phase diagrams analyzed. Based on this,continuous evaporation experiments by stages have been accomplished for the wastewater of a company,and the rules of evaporative crystallization salting finally obtained. Various kinds of salt materials can be separated and purified by direct evaporative crystallization. The experime-ntal results show that the inorganic salts evaporated and separated from desulfurization wastewater are calcium sulfa-te,magnesium sulfate monohydrate,and a mixture of magnesium sulfate monohydrate and sodium chloride.

引文

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