热力发电2017，Vol.46Issue(10)：100-105,6.DOI:10.3969/j.issn.1002-3364.2017.10.100
空气预热器旁路烟气余热利用系统热力特性数值模拟
Numerical simulation on thermodynamic characteristics of air preheater bypass flue gas waste heat utilization system
摘要
Abstract
High exhaust temperature and large heat loss of flue gas are common problems occurred in utility boilers.Therefore,on the basis of energy cascade utilization principle,a complete system model including boiler,steam turbine and generator was established using the commercial software EBSILON,by taking a supercritical 600 MW unit as the example.On this basis,the thermodynamic characteristics of the normal low pressure economizer system and air preheater bypass flue gas waste heat utilization system were numerically simulated.The results show that,the air preheater bypass flue gas waste heat utilization system can increase the utilization level of flue gas waste heat,realize the cascade utilization of energy,of which the energy saving effect is about 2 times of that of the conventional low pressure economizer system.The air preheater bypass flue gas waste heat utilization system is more suitable for the units with larger hot primary air drying capacity.关键词
燃煤锅炉/排烟温度/空气预热器/低压省煤器/旁路烟气/余热利用/EBSILON软件Key words
coal-fired boiler/exhaust temperature/air preheater/low pressure economizer/bypass flue gas/waste heat utilization/EBSILON software分类
资源环境引用本文复制引用
谢天,范庆伟,房瑾,黄嘉驷..空气预热器旁路烟气余热利用系统热力特性数值模拟[J].热力发电,2017,46(10):100-105,6.基金项目
中国华能集团公司总部科技项目(HNKJ15-H09)Science and Technology Project of China Huaneng Group (HNKJ15-H09) （HNKJ15-H09）
