循环流化床锅炉热效率估算及影响因素分析  

Calculation and analysis of thermal efficiency for circulating fluidized bed boilers

作　　者：付周[1] 王传亮 魏东[1] FU Zhou;WANG Chuanliang;WEI Dong(Jiuquan Satellite Launch Center of China,Jiuquan 732750,China)

机构地区：[1]中国酒泉卫星发射中心,甘肃酒泉732750

出　　处：《区域供热》2024年第3期94-99,共6页District Heating

摘　　要：锅炉热效率是锅炉运行状况经济性评价的关键指标,是指导锅炉高效运行的重要依据。针对锅炉热效率无法在线测量的问题,基于反平衡法提出了锅炉热效率的离线估算模型,利用某75 t/h循环流化床锅炉DCS运行数据和燃煤参数仪器化验值对锅炉热效率进行解算。通过对解算结果的分析表明,锅炉运行负荷和锅炉吹灰操作均会对锅炉热效率产生影响。最后,针对锅炉热效率的影响因素,提出了锅炉运行的优化策略。上述研究对提高锅炉运行效率具有潜在应用价值。Boiler thermal efficiency is a key indicator for the economic evaluation of boiler operating conditions and is an important basis for guiding the efficient operation of boilers.For the problem that boiler thermal efficiency cannot be measured online,an offline estimation model of boiler thermal efficiency is proposed based on anti-balance method,and the boiler thermal efficiency is solved by using the DCS operation data of a 75 t/h circulating fluidized bed boiler and the instrumental assay values of coal combustion parameters.The analysis of the boiler thermal efficiency results shows that the boiler operating load and the boiler soot blowing operation have an impact on the boiler thermal efficiency.Finally,the optimization strategy of boiler operation is proposed for the influencing factors of boiler thermal efficiency.The above research has potential application value for improving boiler operating economy.

关 键 词：反平衡法 循环流化床锅炉 锅炉热效率 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]