中国电力2012，Vol.45Issue(12)：26-30,41,6.
采用混合式烟气再热技术治理火电厂“石膏雨”
Elimination of Gypsum Rain with Admixing and Heating Cleaned Flue Gas
吴炬 1邹天舒 1冷杰 1曲莹军 2徐晓初2
作者信息
- 1. 东北电力科学研究院有限公司,辽宁沈阳 110006
- 2. 中电投抚顺热电有限责任公司,辽宁抚顺 113006
- 折叠
摘要
Abstract
A large number of raindrops, so-called gypsum rain are found frequently around the smoke stack of large thermal power plants with no GGH installedin the wet FGD system in China., which seriously affects the environment and the living of people around the plant. It is mainly attributed to the lowe temperature and high humidity of the cleaned flue. Therefore, heating the cleaned flue gas by hot secondary air from boiler island, i. e. admixing and heating the cleaned flue gas (AHG) is designed and applied to eliminate the gypsum rain. Based on the practice in a cogeneration power plant in Fushun, the principle, implementing measure and main designed parameters of AHG are introduced. The technical and economic analysis is carried out with the test data, such as boiler efficiency, auxiliary power consumption and net coal consumption. Taking a 300-MW unit for example, the economics and the safety are compared among AHG, medium GGH and rotation GGH. Significant economic and social benefits are observed from the practice in which the gypsum rain is eliminated by AGH with low investment and annual cost, no corrosion or blocking compared with GGH.关键词
湿法脱硫/石膏雨/净烟气加热/混合式烟气再热技术/烟气再热器(GGH)/热二次风/煤耗Key words
wet flue gas desulfurization/ gypsum rain/ heating of cleaned flue gas/ fundamentals on admixing and heating of cleaned flue gas/ gas-gas heater/ hot secondary air/ coal consumption分类
信息技术与安全科学引用本文复制引用
吴炬,邹天舒,冷杰,曲莹军,徐晓初..采用混合式烟气再热技术治理火电厂“石膏雨”[J].中国电力,2012,45(12):26-30,41,6.
