燃煤机组烟气水分回收系统设计与运行最优化  

Design and Operation Optimization of Water Recovery System from Flue Gas for Coal-fired Power Plants

作　　者：贾晨辉 刘培[1] 李政[1] JIA Chenhui;LIU Pei;LI Zheng(State Key Lab of Power Systems,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学能源与动力工程系,电力系统国家重点实验室,北京100084

出　　处：《动力工程学报》2023年第2期151-157,213,共8页Journal of Chinese Society of Power Engineering

基　　金：国家重点研发计划资助项目(2019YFE0100100)。

摘　　要：采用陶瓷复合膜冷凝器进行燃煤机组烟气水分回收时会存在燃煤机组发电负荷波动范围大的问题,为此提出一种基于情景的设计-运行两阶段最优化方案,通过考虑机组负荷波动特征,生成一组带有概率的情景,以整个寿命周期内总投资和运行成本最低为目标函数,获得最优的陶瓷复合膜冷凝器的设计和运行方案。最后,以某330 MW燃煤机组为案例进行计算。结果表明:与仅基于额定负荷优化的参考方案相比,基于情景的设计-运行两阶段最优化方案可使膜面积减小3%,总成本节省8%,其中投资成本降低3%,运维成本降低12%。Ceramic composite membrane condensers can be used for water recovery from flue gas in coal-fired units,there exists a large range of power generation load fluctuation of coal-fired units.Therefore,a scenario-based two-stage design and operation optimization method was proposed.By considering the charateristics of load fluctuation,a group of scenarios with proability was generated,and the optimal design and operation scheme of ceramic composite membrane condenser was obtained with the lowest total investment and operation cost in the whole lifespan cycle as the objective function.Finally,a 330 MW coal-fired unit was taken as an example for calculation.Results show that compared with the reference scheme based on rated condition,the proposed scheme can reduce the membrane area by 3% and the total cost by 8%,the investment cost and the operation and maintenance cost are reduced by 3% and 12% respectively.

关 键 词：膜冷凝器 燃煤机组 水分回收 两阶段最优化 系统集成 

分 类 号：TK115[动力工程及工程热物理—热能工程]