循环流化床机组深度调峰性能分析与评价  

Performance analysis and evaluation of deep peak-regulating for circulating fluidized bed units

作　　者：于浩洋 高明明[1] 张缦 杨海瑞 宋珺琤 巩晨 YU Haoyang;GAO Mingming;ZHANG Man;YANG Hairui;SONG Juncheng;GONG Chen(State Key Lab of Alternate Electric Power System With Renewable Energy Sources(School of Control and Computer Engineering,North China Electric Power University),Beijing 102206,China;State Key Laboratory of Power System and Generation Equipment Control and Simulation,Tsinghua University,Beijing 100084,China;Tianjin Development Branch,Huadian Power International Corporation,Ltd.,Tianjin 300270,China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学控制与计算机工程学院),北京102206 [2]清华大学电力系统及发电设备控制和仿真国家重点实验室,北京100084 [3]华电国际电力股份有限公司天津开发区分公司,天津300270

出　　处：《热力发电》2020年第5期65-72,共8页Thermal Power Generation

基　　金：国家重点研发计划项目(2016YFB0600205);国家自然科学基金项目(U1810126);华电国际电力股份有限公司科技项目(CHDKJ19-01-88)。

摘　　要：某330 MW循环流化床机组进行深度调峰改造后,能长期保持30%负荷段运行,但深度调峰时机组存在热效率差、单位发电成本高、难以投入自动的问题。本文通过分析该机组深度调峰运行数据,建立深度调峰性能分析评价流程;在对机组深度调峰时的热力性能、发电成本等问题的分析过程中,研究了入炉煤粒径与流化风量对炉膛物料分布的影响,并计算了深度调峰的经济性。结果表明:循环流化床机组在深度调峰条件下具有天然优势与可行性;深度调峰改造后,该330 MW循环流化床机组每日可稳定调峰6 h以上,初步计算每年可以获得约1700万元的效益。本文研究结果可以为今后循环流化床机组深度调峰运行的改造提供参考。After deep peak-regulating retrofitting,a 330 MW circulating fluidized(CFB)bed unit can maintain 30%load segment operation for a long time.However,the problems of poor thermal efficiency,high power generation cost and difficulty in putting into automatic operation are more prominent in deep peak-regulating.By analyzing the deep peak-regulating operation data,the performance evaluation process of deep peak-regulating was established in this paper.In the process of analyzing the thermal performance and generation cost of the unit and other problems during deep peak-regulating,the influence of coal particle size and fluidized air volume on furnace material distribution was studied.Moreover,the economics of deep peak-regulating were calculated.The results show that,the CFB unit has natural advantages and feasibility under deep peak-regulating conditions.After the retrofitting,the 330 MW CFB unit can perform stable peak-regulating for more than 6 hours per day,and get about 17 million yuan in benefits.The research results in this paper can provide a reference for the future transformation of deep peak-regulating of CFB units.

关 键 词：循环流化床机组 深度调峰 运行特性 物料分布 分析评价 经济性分析 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]