燃气预热温度对燃气-蒸汽联合循环性能影响  

Influence of preheating temperature of nature gas on performance of gas-stem combined cycle

作　　者：付忠广[1] 王霄楠[1] 卢可[1] 张辉[1] FU Zhongguang WANG Xiaonan LU Ke ZHANG Hui(National Thermal Power Engineering ＆ Technology Research Centre, North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学国家火力发电工程技术研究中心,北京102206

出　　处：《热力发电》2016年第10期16-22,共7页Thermal Power Generation

基　　金：中央高校基本科研专项资金资助项目(2014ZZD04)

摘　　要：以西门子V94.3燃气-蒸汽联合循环系统为例,采用Aspen Plus软件对该系统投运性能加热器后燃气预热温度变化对联合循环性能的影响进行了模拟计算。结果表明:投运性能加热器预热天然气后,燃气轮机(燃机)效率提升了0.15%,联合循环效率上升了0.06%,排烟温度下降了1.98℃;并且随着燃气预热温度的提高,燃机效率和联合循环效率上升,联合循环排烟温度下降。Gas preheating is an important way to improve cycle efficiency and maintain stable combustion. In this paper,the Simens V94.3 gas-stem combined cycle system was simulated to analyze the influence of gas preheating temperature on performance of the combined cycle after the performance heater was installed, by using the Aspen Plus software. The results show that, the application of the performance heater can in- crease the gas turbine efficiency by O. 15% and the combined cycle efficiency by O. 06% ,and reduce the ex- haust temperature by 1.98℃. Moreover,as the gas preheating temperature rises,the efficiency of the gas turbine and the combined cycle grows, and the exhaust temperature drops.

关 键 词：燃气-蒸汽联合循环 性能加热器 天然气 排烟温度 热效率 模拟计算 

分 类 号：TK16[动力工程及工程热物理—热能工程]