石灰石一石膏湿法烟气脱硫资料.docVIP

摘　要 随着人们对环境质量要求的日益增强，电厂排放的二氧化硫对环境的影响越来越引起社会的关注，电厂锅炉尾部烟气的二氧化硫排放量控制也成为大气污染物治理的重中之重。石灰石．石膏湿法脱硫工艺是世界上应用最广泛的一种脱硫技术，日本、德国、美国的火力发电厂采用的烟气脱硫装置约90％采用此工艺。本文主要分析石灰石一石膏法烟气脱硫技术在大型火电机组上的应用。文中首先对国内外各种脱硫技术进行分析比较，比较结果表明石灰石一石膏湿法脱硫工艺是一种适合大型火电机组的工艺。并结合华能德州电厂2×300MW机组烟气脱硫工程，阐述了该脱硫工艺的特点、流程、原理，以及该脱硫工程系统与设备、设计主要参数及计算成果。最后分析了由此产生的环境效益和社会效益。通过石灰石一石膏湿法脱硫技术在华能德州电厂2×300MW机组及其他电厂机组成功应用，证明该工艺具有完全成熟，运行安全可靠，可用率高的优点。 关键词：石灰石一石膏湿法烟气脱硫；烟气脱硫装置；吸收塔；二氧化硫 Abstract Along with environmental quality requirement increasingly，the emission of sulfur dioxide in power plant arouse more and more care so desulphurization is very important．the SO2 emission control from thermal- electric power stations becomes very important in the treatment for air pollution Flue gas desulfurization based on wet limestone-gypsum process (WLST-FGD) which has been taken by 90％of FGD devices for thermal．power plant in Japan，Germany, America is most widely used technology in FGD field all over the world．important．This paper mainly study on FGD technique of the limestone-gypsum method is large thermal power units．Firstly it compares domestic and international various desulphurization technology show FGD technique of the limestone—gypsum method suit large thermal power units．Then with the project of 2×300 MW of power plant of flue gas desulphurization as example，have elaborated equipment，process，principle，as well as this desulphurization project system and the characteristic of this desulphurization technology，design major parameter and calculate accomplishment．Finally the environmental benefit and social benefit that produces from this was analyzed．The successful applications of FGD technique of the limestone-gypsum method in power plant prove that this technology has many merits：completely mature，reliable operation and the advantage with high rate． KEY WORDS： Flue gas desulfurization； FGD device；absorber；S02；limestone； 目 录 1　概 述 1 1.1 国内外脱硫技术的发展状况及需要研究的问题 1 1.2 几种主要脱硫工艺简介 2 1.2.1 石灰石一石膏湿法脱硫工艺 2 1.2.2 氧化镁法 3 1.2.3 循环流化床干法 4 1.2.4 氨法 6 1.