燃煤含硫量对630 MW机组脱硫系统的经济性影响  

Economic effect of sulfur content in fire coal on desulfurization system of 630 MW unit

作　　者：鄢晓忠[1] 李仞 阮敏[1] 敬佩 陈绍龙 吴爱军 张启平 黎红 YAN Xiao-zhong;LI Ren;RUAN Min;JING Pei;CHEN Shao-long;WU Ai-jun;ZHANG Qi-ping;LI Hong(School of Energy and Power Engineering,Changsha University of Science&Technology,Changsha 410114,China;Hunan Energy Design Institute Co.,Ltd.,China Energy Construction Group,Changsha 410007,China;Hunan Baoqing Coal Power Co.,Ltd.,Shaoyang 422000,China)

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410114 [2]中国能源建设集团湖南省电力设计院有限公司,湖南长沙410007 [3]湖南宝庆煤电有限公司,湖南邵阳422000

出　　处：《长沙理工大学学报（自然科学版）》2020年第4期92-99,共8页Journal of Changsha University of Science and Technology:Natural Science

基　　金：湖南省自然科学基金资助项目(2019JJ50665)。

摘　　要：为了更好地进行SO x减排,提高火电机组脱硫系统的效率,降低脱硫系统的运行成本,提高火电厂的经济效益,以湖南某发电公司630 MW燃煤火电机组的石灰石/石灰-石膏湿法烟气脱硫系统为研究对象,按额定负荷进行了燃煤含硫量变化对系统脱硫效率、脱硫运行成本、脱硫附加收益等方面的影响的试验分析,以此研究燃煤含硫量变化对机组脱硫系统的经济性影响。研究结果表明:当燃煤含硫量在0.6%~1.2%变化时,随着燃煤含硫量的增加,系统脱硫效率也逐渐提高;燃煤含硫量每增加0.1%,每燃烧1 t煤机组脱硫系统综合效益约降低1.62元;但当燃煤含硫量≥4.0%时,脱硫成本将超过所获收益,是不经济的。In order to better reduce SO x emission,improve the efficiency of the desulfurization system of thermal power unit,reduce the operating cost of the desulfurization system,and improve the economic benefit of thermal power plant,the limestone/lime-gypsum wet flue gas desulfurization system of a 630 MW coal-fired thermal power unit in a power generation company in Hunan was taken as the research object.The influence of change of sulfur content in fire coal on desulfurization efficiency,operating cost of desulfurization and additional income of desulfurization was tested and analyzed with the rated load,so as to study the economic effect of change of sulfur content in fire coal on desulfurization system.The research results show that when the sulfur content in fire coal changes within the range of 0.6%~1.2%,with the increase of the sulfur content in fire coal,the desulfurization efficiency of the system also improves gradually.For every 0.1%increase of the sulfur content in fire coal,the comprehensive benefit of the desulfurization system is reduced by about 1.62 yuan when 1 t coal is burned out.However,when the sulfur content in fire coal is more than 4.0%,the desulfurization cost will exceed the profit,which is uneconomical.

关 键 词：燃煤锅炉 湿法脱硫 燃煤含硫量 脱硫成本 经济性分析 

分 类 号：TM6[电气工程—电力系统及自动化]