电站锅炉烟气余热及水分回收系统仿真研究  

Simulation on Waste Heat and Water Recovery System of Flue Gas in Plant Boiler

作　　者：王金平[1] 邓煜[1] 李斌[1] 朱瑞[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003

出　　处：《系统仿真学报》2017年第7期1553-1560,共8页Journal of System Simulation

基　　金：国家科技支撑计划(2010BAA07B01)

摘　　要：为了进一步提高电厂经济性,提出了锅炉烟气余热及水分回收系统。建立了烟气冷却器的数学模型,同时构建了烟气余热及水分回收系统的仿真模型,并将其集成到该机组的仿真系统中并对该系统进行仿真实验,分析了系统的投入对火电机组运行特性的影响。通过阀门扰动实验,研究了余热及水分回收系统的动态特性。结果表明,系统的投入不仅能提高机组经济性,还能够有效的回收烟气中的水分,同时对火电机组运行的稳定性影响不大,在机组原DCS控制系统的调节下,机组能稳定运行。To further improve economy of power plant, the waste heat and water recovery system was put forward. The mathematical model of the gas cooler was established, and the simulation model of this system was built. This simulation model was integrated into the simulation system of a 350 mw heating unit, and the simulation experiment was carried out. The influences caused by the introduction of the flue gas waste heat and water recovery system to thermal power unit were analyzed. The dynamic characteristics of the flue gas waste heat and water recovery system based on the valve perturbation experiments were studied. The results indicate that the introduction of the flue gas waste heat and water recovery system can not only improve the economy of the unit, but also can effectively recover the moisture in the flue gas. Besides, it has little effect on the operation stability of the thermal power unit, and the stable operation of this unit by the regulation of DCS control system can be realized.

关 键 词：余热利用 水分回收 烟气冷却器 动态特性 

分 类 号：TK019[动力工程及工程热物理]