700MW超超临界机组降低排烟温度的参数调整研究  

Parameter Adjustment Research of Reducing Exhaust Gas Temperature of 700MW Ultra Supercritical Unit

作　　者：洪杰南 应冬军 温达 

机构地区：[1]国家电力投资集团江西电力有限公司新昌发电分公司

出　　处：《电站系统工程》2016年第5期66-68,71,共4页Power System Engineering

摘　　要：针对某700 MW超超临界燃煤机组,系统分析了影响排烟温度的各种因素,并从运行参数优化调整的角度,开展了一系列的优化调整试验,寻找控制排烟温度的有效措施。结果表明,加强换热面的吹灰、减少锅炉的漏风量、控制合适的总风量、控制制粉系统的投入数量、减少燃尽风用量以及减少一次风量、提高磨煤机出口温度等措施能有效降低排烟温度,提高电厂运行的经济性。The various factors of influencing the exhaust temperature for 700MW ultra-supercritical coal-fired unit is systematic analyzed. In order to find effective measures to control exhaust gas temperature, a series of optimization and adjustment test has carried out from the angle of operation parameter optimization adjustment. The results indicated that, the measures of strengthening soot blowing of heat transfer surface, reducing leakage air of boiler, controlling the volume of total air, reducing the quantity of coal pulverizing system, reducing the dosage of over fire air, reducing the volume of primary air, improving the outlet temperature of coal mill can effectively reduce the exhaust gas temperature and improve the economic benefit of power plant.

关 键 词：超超临界锅炉 排烟温度 运行调整 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]