天然气电厂基于mea的烟气co2捕获系统工艺分析

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1、北京交通大学硕士学位论文态实验水样中形成的表面形貌进行分析，并研究了去掉腐蚀产物后的不锈钢表面腐蚀形貌。结果表明随着时间增加，不锈钢表面不断累积腐蚀产物，使不锈钢表面Fe、Cr、Ni和Mn等基体主要金属元素的含量下降，而C、0等元素含量显著上升。MEA溶液对不锈钢的腐蚀是以点蚀开始，随着浸泡时间的增加，各个蚀点连接成线，并最终形成大面积腐蚀。关键词：天然气电厂；乙醇胺(MEA)；CO：捕获；腐蚀；降解分类号：ABSTRA(-r一—————————————————————————————————————————

2、————————一ABSTRACTABSTRACT：Theincreasinganthropogeniccarbondioxide(C02)emissionthreatenstochangetheearth’sclimate．AmajorreasonofglobalwarmingisC02emissionfrompowel"plants．InChina，coal．firedgeneration’shighproportionandseriouspollutionproblemsneedtobesolved．N

3、aturegashasmanyadvantagessuchasclean，reliable，flexibleandsafe，however．DevelopmentofChina'snaturalgasgenerationisverynecessaryandurgent．OnewayofdecreasingC02emissionsisC02captureandseparation(CCS)．Amongalldifferentpost．combustioncaptureprocessesofC02，chemica

4、labsorptionprocesswasconsideredasanoptimumonebecauseoflowC02concentrationinfluegas．ChemicalabsorptionofC02insimulatedfluegasfromnaturalgaspowerplantwithaqueousmonoethanolamine(MEA)solutionWasinvestigated．ThispaperoptimizestheoperationconditionofC02dynamicca

5、pturedeviceandexplorestheinfluellceoftheconcentrationof02inthefluegas，andanalysisthedegradationofMEAsolutionandcorrosionofequipmentpipeline，screeningforappropnateantidegradantandcorrosioninhibitor．Getthefollowingresultsandconclusions：1)InordertomaketheC02dy

6、namicexperimentaldevicecarlbeusedinoptimumoperatingcondition，traderthesameMEAconcentration，absorptiontemperatureandregenerationtemperature，thetestswereconductedOVertheliquid／gasratio粥from16L／m3to4L／m3，absorptionandregenerationperformanceofC02capturesystemwe

7、reanalysedbyexperimentmethod．Itshowsthat，intheotherconditionsamesituation，theabsorptionandregenerationperformanceofC02capturesystemhaveachievedgoodeffectattheliquid／gasratiois16L／m3．TheC02removalratec觚maintain21hatmorethan80％，andC02regenerationrateeventuall

8、ystabilizedataround70％．2)Underthesameliquid／gasratio，absorptiontemperatureandregenerationtemperature．thetestswereconductedoverMEAconcentrationfrom10％to40％，absorptionandregenerationperformanceofC02captu