135 t/h循环流化床锅炉的热分析和[火用]分析  

Energy and Exergy Analyses of a 135 t/h CFB Boiler

作　　者：宋国辉 王红梅 朱亮[3] 张思文[1] 崔晓波 Song Guohui;Wang Hongmei;Zhu Liang;Zhang Siwen;Cui Xiaobo(School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China;Hangzhou Steam Turbine Co., Ltd., Hangzhou 310022, China;Wuxi Huaguang Boiler Co., Ltd., Wuxi 214028, Jiangsu Province, China)

机构地区：[1]南京工程学院能源与动力工程学院,南京211167 [2]杭州汽轮机股份有限公司,杭州310022 [3]无锡华光锅炉股份有限公司,江苏无锡214028

出　　处：《发电设备》2020年第4期229-234,共6页Power Equipment

基　　金：南京工程学院引进人才科研启动基金(YKJ201818,YKJ201407)。

摘　　要：为了分析有、无高压加热器(简称高加)对某135 t/h循环流化床锅炉热效率和[火用]效率的影响,从锅炉本体和锅炉系统进行了热分析和[火用]分析。结果表明:锅炉系统的热效率和[火用]效率取决于锅炉本体的热效率和[火用]效率。在相同主蒸汽质量流量下,无高加有利于提高锅炉本体和锅炉系统的热效率,但不利于提高其[火用]效率,所建立的锅炉[火用]损失计算模型可为后续研究提供参考。To analyze the effects of the conditions with and without high-pressure heaters on the energy efficiency and exergy efficiency of a 135 t/h circulating fluidized bed(CFB)boiler,a study was conducted on the boiler body and boiler system through energy and exergy analyses.Results show that the energy efficiency and exergy efficiency of the boiler system depend on those of the boiler body.Under the same steam flow,the condition with high-pressure heaters is beneficial to the energy efficiencies of the boiler body and system,but is against their exergy efficiencies.The proposed calculation model of boiler’s exergy losses could serve as a reference for further researches.

关 键 词：循环流化床 高加 给水温度 烟气余热 热效率 [火用]效率 [火用]损失 

分 类 号：TK212.4[动力工程及工程热物理—动力机械及工程] TK229.66