循环流化床锅炉冷渣器供水流量稳定研究
张德运¹，刘袖²，胡益章¹，龙颜长²，柳玉宾²，朱良君²
（1. 华电国际电力股份有限公司天津开发区分公司，天津 300270；2. 华电电力科学研究院有限公司，浙江 杭州 310030）
摘要： 分析了一热电厂3×170 MW 循环流化床锅炉机组冷渣器供水系统流程，发现当该系统外部负荷或者除氧器上
水量发生变化时，冷却器有可能出现流量下降的情况，甚至发生断水事故，导致冷渣器停止运行，严重威胁机组安全。
鉴于此，提出增设一路冷渣器出口至补水再循环管路连接管路的优化方案，实现无论除氧器是否需要上水，均能保证冷
渣器有冷却水供给，有效解决了冷却器流量下降或断水导致冷渣器停运的问题。
关键词： 循环流化床锅炉；冷渣器；供水系统；冷却流量
中图分类号： TK229.66     文献标志码： A     文章编号： 2095-0802-(2022)11-0086-02
Stability of Water Supply Flow of Circulating Fluidized Bed Boiler Slag Cooler
ZHANG Deyun¹, LIU Xiu², HU Yizhang¹, LONG Yanchang², LIU Yubin², ZHU Liangjun²
(1. Tianjin Development Area Branch Company, Huadian Power International Co., Ltd., Tianjin 300270, China; 2. Huadian
Electric Power Research Institute Co., Ltd., Hangzhou 310030, Zhejiang, China)
Abstract: This paper analyzed the process of the water supply system of the slag cooler of a 3 ×170 MW circulating fluidized
bed boiler unit in a thermal power plant, finding that when the external load or the amount of water on the deaerator changes in
the system, the cooler may have a flow drop or even a water outage accident, resulting in the suspension of the slag cooler and
seriously threatening the safety of the unit. In view of this, this paper proposed an optimization scheme for adding a slag cooler
outlet to the water replenishment and recirculation pipeline connection pipeline, so as to ensure that the slag cooler has cooling
water supply regardless of whether the deaerator needs to be supplied with water, and effectively solve the accident of the cooler
flow drop or the water cutout leading to the shutdown of the slag cooler.

Key words: circulating fluidized bed boiler; slag cooler; water supply system; cooling flow