变磨煤机组合下的墙式对冲燃煤锅炉炉内燃烧特性数值模拟  

Numerical Simulation on Combustion of an Opposed Firing Boiler with Different Burners Arrangement

作　　者：邓云天 李道林 潘卫国 DENG Yuntian;LI Daolin;PAN Weiguo(Shanghai Electric Power Generation Environment Protection Engineering Co., Ltd., Shanghai 201612, China;College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China;Key Laboratory of Clean Power Generation and Environmental Protection Technology in Mechanical Industry, Shanghai 200090, China)

机构地区：[1]上海电气电站环保工程有限公司,上海201612 [2]上海电力大学能源与机械工程学院,上海200090 [3]机械工业清洁发电环保技术重点实验室,上海200090

出　　处：《锅炉技术》2020年第4期38-42,共5页Boiler Technology

基　　金：国家重点研发计划资助项目(2018YFB0604204);上海市科技攻关项目(18DZ1202502)。

摘　　要：为了研究亚临界墙式对冲燃煤锅炉变燃烧器组合工况下的炉内燃烧特性,建立了锅炉炉膛的研究模型,利用数值模拟方法对某电厂600 MW亚临界对冲燃煤锅炉开展了数值模拟研究,并分析了锅炉变燃烧器工况下对炉膛温度场和燃尽率的影响。结果表明:停用前墙上层燃烧器比停用后墙上层燃烧器的炉膛出口温度稍高;停用上层燃烧器比停用下层燃烧器更有利于煤粉燃尽和降低排放量;以上模拟分析为以后的锅炉运行的经济性和环保性提供指导依据。In order to study the subcritical opposed coal-fired boiler change burner combination conditions of furnace combustion characteristics,boiler furnace is presented in this paper the research model,using the method of numerical simulation of 600 mw subcritical hedge coal-fired boiler was carried out by numerical simulation research,and analyzed the boiler burner condition on the furnace temperature and the influence of burning rate.The results show that the furnace outlet temperature of the upper layer burner on the front wall is slightly higher than that of the upper layer burner on the back wall.Stopping upper burner is more beneficial to pulverized coal burning and emission reduction than stopping lower burner.The above simulation analysis provides the guidance basis for the future boiler operation economy and environmental protection.

关 键 词：对冲锅炉 数值模拟 磨煤机组合 NOX排放 

分 类 号：TK223.2[动力工程及工程热物理—动力机械及工程]