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1、第7卷第3期南京师范大学学报(工程技术版)Vo.l7No.32007年9月JOURNALOFNANJINGNORMALUNIVERSITY(ENGINEERINGANDTECHNOLOGYEDITION)Sep,2007火电厂循环冷却水应用中水的试验研究12李传统,卫荣章(1.南京师范大学动力工程学院,江苏南京210042;2.上海大屯能源股份有限公司发电厂,江苏徐州221618)[摘要]生活污水处理以后,仍具有含氨量、微生物、悬浮物均较高的特点,如果直接用作火电厂循环冷却水,将会因藻类骤生增加
2、冷凝器水侧热阻,降低机组运行的热经济性.对中水作为火电厂循环冷却水的合理处理方法与工艺流程进行了研究,对影响中水作为火电厂循环冷却水的因素进行了分析和优化,使中水在2台12MW的燃煤机组上进行了工业性试验研究,经过2年多的连续运行表明,在每周投胶球1次的情况下,冷凝器端差常年保持小于5,在环境温度38时,仍能使排汽温度不超过45.运行结果表明,生活污水经过合理的处理和工艺优化以后,完全能够满足火电厂循环冷却水的要求,不仅降低了火电厂循环冷却水的取水费用,而且减少了生活污水对环境的污染.[关键词]
3、生活污水,火电厂,循环冷却水,水处理,优化[中图分类号]TK16[文献标识码]B[文章编号]1672-1292(2007)03-0030-05ExperimentalStudyonUseofTreatedDomesticSewageasCriculatingColingWaterinPowerPlant12LiChuantong,WeiRongzhang(1.SchoolofPowerEngineering,NanjingNormalUniversity,Nanjing210042,China;
4、2.DatunCoal&ElectricityCompany,Xuzhou221618,China)Abstract:Afterroutinephysicaltreatment,thedomesticsewagestillcontainsammonias,microbesandsuspendedmatters.Ifuseddirectlyasthecirculatingcoolingwaterinpowerplant,itwillresultsinthecorrosionofheatex-change
5、surfaceincondenser,andtheheatresistancewillincreaseonwatersideduetoalgaegrowthsoastoinfluencethethermaleconomyoftheunits.Inthispaper,studiedarethereasonabletreatmentmethodandprocessofthedo-mesticsewageascirculationcoolingwater,andtheinfluencefactorsarea
6、nalyzedandoptimized.Theindustrialex-perimentonuseofdomesticsewageascirculatingcoolingwaterisconductedinthetwo12MWcoa-lfiredfluidized-bedunits,andthetwoyearcontinuousoperationindicatesthatthistechnologyfeaturesenvironmentalprotectionandhigheconomy.Byusin
7、gtherubberballscleaningonceaweek,theendstemperaturedifferenceofcondenseriskeptlessthan5,andevenattheenvironmentaltemperatureof38,thetemperatureofexhauststeamneverexceeds45.Theexperimentalresultsshowthatthedomesticsewagecanmeetthedemandsofcirculatingc
8、oolingwaterafterreasonabletreatmentandprocessoptimization,anditnotonlyreducesthewaterfeesbutalsocontributestotheim-provementofChinasenvironmentalprotection.Keywords:domesticsewage,powerplant,circulatingcoolingwater,watertreatmen
