1000MW机组炉烟再循环送粉改造技术研究  

Study on the Recycling of Flue Gas into the Coal Pulverizer System in 1 000 MW Power Plant

作　　者：靖长财 杨富鑫 谭厚章[2] 刘兴[2] 王学斌[2] 

机构地区：[1]神华国华(北京)电力研究院有限公司,北京100025 [2]西安交通大学热流科学与工程教育部重点实验室,陕西西安710049

出　　处：《华北电力技术》2017年第5期49-53,共5页North China Electric Power

摘　　要：针对制粉系统中出口温度过低等问题,以某电厂1 000 MW机组为工程应用背景,提出炉烟再循环送粉的改造方案。采用制粉系统热平衡的方法,对该方案进行热力计算。计算结果表明:炉烟再循环的改造方案,有效提高了制粉系统的出口温度和机组的经济性,并且制粉系统的氧含量质量百分数控制在16%以下,防止了系统的爆燃。To solve the problem that the temperature is quite low in the outlet of coal pulverizer system, a retrofit of recycling the flue gas into the system is proposed in a 1 000 MW power plant. A heat balance method to the coal pul- verizer system was used to calculate the parameters. The results show that the proposal is feasible to control oxygen content in the coal pulverizer system under 16% and to meet the requirements of anti-explosion. The retrofit can in- crease the temperature in the outlet of coal pulverizer and improve the efficiency of the power plant.

关 键 词：锅炉 制粉系统 炉烟再循环 

分 类 号：TK223.25[动力工程及工程热物理—动力机械及工程]