电力行业节能21NO.052023节能ENERGYCONSERVATION垃圾发电厂余热利用技术及其经济性分析丁慧芳1白洋2刘洪福1郭系陈1徐畅2马硕2*(1.河南沃克曼建设工程有限公司,河南郑州450008;2.天津大学环境科学与工程学院,天津300350)摘要:为了研究垃圾焚烧发电厂余热利用潜力及经济性,以安阳市某日处理能力为2250t的垃圾发电厂为研究对象,对其满负荷工作下的余热资源种类及余热量进行全方位监测及计算,提出余热利用技术方案,并进行相关经济性分析。结果显示:垃圾发电厂冷却水及烟气的余热量最显著,冷却水携带热量89.28~99.55MW,烟气携带余热量6.49~6.54MW;可以采用蒸汽压缩式水源热泵对冷却水进行余热回收,采用带有新型防腐材料的焊接板式换热器及防腐烟道对烟气进行余热回收,冷却水余热利用技术方案的投资回收期仅为0.9年,烟气余热利用技术方案的投资回收期为1.2a。研究结果可为我国垃圾焚烧发电厂的余热回收设计与优化提供参考。关键词:垃圾发电厂;余热利用;经济性分析中图分类号:TK172文献标识码:B文章编号:1004-7948(2023)05-0021-05doi:10.3969/j.issn.1004-7948.2023.05.006Analysisofwasteheatutilizationtechnologyandit'seconomicingarbagepowerplantDINGHui-fangBAIYangLIUHong-fuGUOXi-chenXUChangMAShuoAbstract:Inordertoinvestigatethepotentialandeconomyofwasteheatutilizationinwaste-to-powerplants,thegarbagepowerplantofdailyprocessingcapacityabout2250tinAnyangCityastheresearchobject,andcomprehensivelymonitored/calculatedthetypesandamountsofwasteheatresourcesunderfullloadoperation.Thetechnicalschemeofwasteheatutilizationwasfabricated,andtherelativeeconomicanalysiswascarriedout.Theresultsshowthatthecoolingwaterandfluegasofthegarbagepowerplanthavethemostsignificantwasteheat,theheatcarriedbythecoolingwateris89.28~99.55MW,andthewasteheatcarriedbythefluegasis6.49~6.54MW.Thesteamcompressionwatersourceheatpumpcouldbeusedforthewasteheatrecoveryofcoolingwater,theweldedplateheatexchangerswithnewanti-corrosionmaterialsandanti-corrosionfluecouldbeusedforheatrecoveryoffluegas.Theinvestmentrecoveryperiodofthecoolingwaterwasteheatutilizationis0.9year,andtheinvestmentrecoveryperiodofthefluegaswasteheatutilizationis1.2years.Theresearchresultscanprov...