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时间:2020-03-28
《大规模碳捕集电站贫液CO2负载率优化研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第35卷第1期动力工程学报V01.35No.12015年1月JournalofChineseSocietyofPowerEngineeringJan.2015文章编号:1674—7607(2015)01—0076—07中图分类号:X701.7文献标志码:A学科分类号:610.30大规模碳捕集电站贫液C02负载率优化研究刘文毅1,唐宝强1,徐钢1,胡胡1,杨勇平1,宋晓娜2(1.华北电力大学国家火力发电工程技术研究中心,北京102206;2.北京信息科技大学机电实习中心,北京100192)摘要:针对燃煤
2、电站CO。捕集能耗较高的问题,在统筹考虑大规模碳捕集燃煤电站汽水系统、脱碳单元和C0。多级压缩单元的相互影响下,对脱碳单元贫液CO。负载率进行了优化.结果表明:脱碳单元再生能耗随贫液CO:负载率的增大呈先减小后增大的趋势,且在贫液CO。负载率为0.26mol/mol时取得最小值;不同再生压力下,随着贫液CO。负载率的增大,脱碳单元的辅机泵功随之增大;在COz捕集率保持不变的情况下,CO。压缩功几乎不随贫液CO。负载率的增大而发生变化;大规模碳捕集燃煤电站的供电效率随贫液CO:负载率的增大呈先提高后降低
3、的趋势,在贫液CO:负载率为0.26mol/mol、再生压力为250Pa时取得最优值.关键词:CO:捕集;贫液CO。负载率;工艺模拟;燃煤电站OptimizationonLeanSolventC02LoadinginCoal—firedPowerPlantswithLarge—scale002CaptureL工UWenyil,TANGBaoqian91,XUGan91,HUYuel,YANGYongpin91,SONGXiaona2(1.NationalThermalPowerEngineering&
4、TechnologyResearchCenter.NorthChinaElectricPowerUniversity,Beijing102206,China;2.ElectricalandMechanicalPracticeCenter,BeijingInformationScience&TechnologyUniversity,Beijing100192,China)Abstract:TosolvethehighenergyconsumptionprobleminC02captureofcoal—f
5、iredpowerplants,anop—timizationonleansolventC02loadingwasconducted,basedonacomprehensiveconsiderationofthemutu—aleffectsamongthesteam—watersystem,decarbonizationunitandthemultistageC02compressionunit.Resultsshowthattheregenerationenergyconsumptionofdeca
6、rbonizationunitincreasesfirstanddecreaseslateronwiththeriseofleansolventC02loading,whichreachestheminimumattheleansolventC02load—ingof0.26mol/mol;thepowerconsumptionofauxiliarypumpincreaseswiththeriseofleansolventC02loadingatdifferentregenerationpressur
7、es;inthecasethattheC02captureratioremainsunchanged,theC02compressionpowerconsumptionhardlychangeswiththeleansolventC02loading.Forpowerplantswithlarge-scaleC02capture,thepowersupplyefficiencyincreasesfirstanddecreaseslateronwiththeriseofleansolventC02loa
8、ding,andtheoptimumpowersupplyefficiencycanbeobtainedattheleansolventC02loadingof0.26mol/molandthepressureof250Pa.Keywords:C02capture;leansolventC02loading;processsimulation;coal—firedpowerplant收稿Et期:2014—0卜lo修订日期:2014—05—06基金项目:国
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