9E燃气轮机联合循环电厂余热锅炉深度节能技术改造  

Technical Retrofit of HRSG Deep Energy Saving for 9E Gas Turbine Combined Cycle Plant

作　　者：光旭[1] 林俊光[1] 田家平 牟文彪 傅洪军 林少平 王晓燕[4] 

机构地区：[1]中国能源建设集团浙江省电力设计院有限公司,杭州310012 [2]温州燃机发电有限公司,浙江温州325013 [3]浙江浙能节能科技有限公司,杭州310005 [4]杭州锅炉集团股份有限公司,杭州310021

出　　处：《燃气轮机技术》2015年第4期66-68,共3页Gas Turbine Technology

摘　　要：为解决某9E燃气轮机联合循环电厂油改气后余热锅炉排烟温度偏高的问题,通过对各关键环节的优化设计,提出增设凝结水加热器系统的技术方案。该方案大幅回收烟气余热,并利用新增受热面所产生的饱和蒸汽驱动螺杆膨胀机进行发电。经济性分析表明,改造后每年可以增加发电量15 049 MW·h,年收益903.7万元,4年左右即可回收项目初投资,经济效益显著。In order to solve the over temperature problem of HRSG for 9E gas turbine combined cycle plant after the design fuel changed from heavy oil to natural gas, this paper presents the technical solution of installing condensate heater system through the opti- mization design of every key link. The residual heat of the exhaust gas is recovered greatly, and saturated vapor is produced by new ad- ditional heating surface to drive the screw expander to generate electric power. Economy analysis shows that 15 049 MW · h of electric energy production is generated per year, and the annual income is 903.7 ten thousand yuan. The first cost of the project is recovered in about 4 years, economic benefit being remarkable.

关 键 词：联合循环 排烟温度 凝结水加热器 螺杆膨胀机 

分 类 号：TM611.31[电气工程—电力系统及自动化]