电厂燃煤锅炉烟气余热回收的优化利用  

Optimized Utilization of Waste Heat Recovery from Flue Gas of Coal-Fired Boiler in Power Plant

作　　者：王迅[1] 李宇曦 李想[3] 高建强[2] 冯玉珠 刘文师 Wang Xun;Li Yuxi;Li Xiang;Gao Jianqiang;Feng Yuzhu;Liu Wenshi(School of Mechanical Engineering,Tianjin University,Tianjin 300354,China;School of Energy and Mechanical Engineering,North China Electric Power University,Baoding 071003,China;College of Management and Economics,Tianjin University,Tianjin 300354,China;Liangshan De Sheng New Equipment Manufacturing Co.,Ltd,Liangshan 272000,China)

机构地区：[1]天津大学机械工程学院,天津300354 [2]华北电力大学能源动力与机械工程学院,保定071003 [3]天津大学管理与经济学部,天津300354 [4]梁山德圣新能设备制造有限公司,梁山272000

出　　处：《燃烧科学与技术》2018年第1期15-20,共6页Journal of Combustion Science and Technology

基　　金：天津市自然科学基金资助项目(10JCYBJC08100)

摘　　要：提出利用温差发电技术进行电厂燃煤炉烟气余热回收的优化应用方式.在应用最小二乘法处理实验数据的基础上,结合河南某2×300,MW电厂燃煤锅炉的实际运行参数和煤质分析,利用温差发电技术,针对不同排烟温度和冷却水出口温度,在布片面积、冷却水流量等方面对电厂燃煤锅炉烟气余热回收进行了优化分析计算.计算表明,若合理降低排烟温度,年可回收约1.4×10~8 kW·h的电.The application of thermoelectric power generation technology in waste heat recovery of flue gas from coal-fired stove of power plant was introduced.Experimental results were dealt by least square method.Actual operating conditions were considered and coal quality of a 2×300,MW thermal power plant in Henan province was analyzed.The area of thermoelectric tablets and the mass flow of cooling water were calculated under different exhaust gas temperatures and cooling water outlet temperatures using thermoelectric power generation technology.The results show that if a reasonable reduction in exhaust gas temperature is achieved,the annual recyclable amount will reach about 1.4×108 kW·h.

关 键 词：低温余热回收 电厂烟气余热利用 温差发电技术 

分 类 号：TK448.21[动力工程及工程热物理—动力机械及工程]