基于发电厂冷源条件的机组节能改造方案分析.pdfVIP

内蒙 古 电力技 术 38 INNERMON()1．1AHECTRI(：pOW { 2013 31卷笫6驯 doi：lO．3969~．issn．1008-6218．2013．06．010 基于发电厂冷源条件的机组节能改造方案分析 樊泽国 ，李宏雄2刘钊彤 。刘 博 (1．内蒙古电力科学研究院，内蒙古 呼和浩特 010020； 2．北方联合电力有限责任公司乌海热电厂，内蒙古 乌海 016O0O) 摘要：以内蒙古华伊卓资热电有限公司某200MW机组为例，根据机组运行特性，利用电 厂现有条件提 出了适合于提高汽轮机真空的温差互补节能改造方案。方案利用发电厂中低 于汽轮机低压缸排汽温度的冷源条件来提高机组真空，同时利用夏季较高温度的凝结水加热 进入化学水车间的生水来提高出水率，达到综合节能的目的。分析认为，环境温度越高则经 过冷却的凝结水喷水减温效果越好；在相同环境温度情况下，负荷越低、减温水温度越低 、减 温水流量越大则真空提高程度越高。 关键词：冷源；凝汽器；化学补水；真空；喷水减温；生水加热器 文献标志码 ：B 中图分类号：TK323 文章编号：1008—6218(2013)06—0038—05 Energy——savingReform Based on Cold Sourcein ThermalPowerPlant Fan Zeguo，LiHongxiong。，Liu Zhaotong，Liu Bo (]．InnerMongoliaElecetriePowerScience ResearchInstitute．InnerMongolia Hohhot 010020； 2．WuhaiFhermalPowerPlantInnerMongolia Wuhai 016000) Abstract：For the sake of energy-saving and 0p timization ofthe currentresource，the complementary reform scheme to improve turbine S vacuum was raised based on the equipments operation characters ofthe thermalpowerplant．The scheme was designed to improve vacuum by thecold sourceswhose temperatureswere lowerthan exhausting steam temperature，and using condensed waterwhich temperaturewashigher in summer to heat the raw water in the chemical water workshop． Via the calculation， the higher environmentaltemperature would improve the temperature reduction effects of the cooling condensed water，and under the same environmentaltemperature，the lower the load was， the lower temperature and the higher flow of desuperheating water would improve the Vacuum ． Keywords：cold source；condenser；chemicalfeedwater；vacuum；temperature reduction