高盐废水调质后在余热烟气中的蒸发应用贾西部

36520185EnvironmentalEngineeringVol．36No．5May2018710065。pH、、SO3、。DOI10.13205/j．hjgc．201805011APPLICATIONOFHIGHSALTWASTEWATEＲEVAPOＲATIONAFTEＲQUALITYMODIFICATIONINTHEWASTEHEATOFFLUEGASJIAXi-buChinaDatangNorthwestElectricPowerTestandＲesearchInstituteXi’an710065ChinaAbstractDesulfurizationwastewaterisonekindofhighsaltwastewaterattheendofcoal-firedpowerplants．Highsaltwastewaterzerodischargewasachievedbytheuseofwasteheatoffluegasevaporationtechnology．Inthisarticlethroughblendingchemicalindustrialproductsthestablehighsaltwastewaterwasobtained．AfterpHconditioningthepapercomparativelystudiedoperationalcharacteristicsoftemperaturedropofsubsequentsmokewindsystemchlorinedistributionSO3removalefficiencyaciddewpointandscalingbeforeandafterquenchedandtemperedhighsaltwastewaterandobtainedtheoptimalschemeofwastewaterconditioning．Keywordshighsaltwastewaterqualitymodificationfluegasductwasteheatevaporation2017－08－18020154《》“”。、20%、、“”。、Cl－。pH4～6mg/L1。“”“”2。1、、、Cl－。Cl－3。。36。60μm20°～30°90°。、41＞15m。。1。1Fig．1Flowchatoffluegasductwasteheatevaporationtechnology22.11pH、COD。、CaCl2、MgCl2、CaSO4、MgSO44。3.36%。1Table1DesulfurizationwastewaterqualityofthetestunitpH8～10ρSS/mg·L－1＜70ρCOD/mg·L－1＜150ρCa2+/mg·L－1≈5000ρMg2+/mg·L－1≈2000ρNa+/mg·L－1≈4600ρCl－/mg·L－1≈20000ρSO2－4/mg·L－1≈2000/%3.362.25。NaCl、Na2SO4、NaOH6。12。2Table2Balancecomparisonofanionandcation/mg·L－1/mmol·L－1/mmol·L－1Na+/mg·L－1Ca2+4800120606Mg2+199283Na+4600200Cl－2002256460632994NaClSO2－42016212982Na2SO4Cl－SO2－4Na+NaCl32994mg/LNa2SO42982mg/L0553.60%。NaOHpH。32NaOHpH3。3NaOHTable3Additionofsodiumhydroxide1234NaOH/mol·L－10.0000.0050.0100.025pH8.289.8410.6111.82NaOH/g·m－302004001000600MW600～1500L/h。360MW39.95×104m3/hO26%11.5m/s4634L/h0.45MPa180m3/h0.45MPa。Cl－SO3。3.1。。Cl－Cl－。Cl－。2。2。Cl－9%28%、、Cl－35%。、100%。12.5%。1—Cl－2—、、Cl－3—Cl－。2Fig．2Distributionbalanceofchlorideinfluegassystem3.2、、。Q=cmTQkJckJ/kg·KmkgΔTK。3。8.2℃。3Fig．3Effectofmodifiedhigh-saltwastewaterontemperaturereductionoffluegas3.3SO31536SO3OkkesAG7tsld=10.8809+27.60lgpH2O+10.83lgpSO3+1.06lgpSO3+2.99432.191tsld℃pH2OPapSO3SO3Pa。1SO3。SO3。SO3pH。44。4SO3Fig．4Desulfurizationeffectsofmodifiedhigh-saltwastewateronSO3influegas4Table4Effectsofmodifiedhigh-saltwastewateronaciddewpoint℃pH=8.28pH=9.84pH=10.61pH=11.82132.1136.2131.5124.1124.0127.3122.8117.0122.8122.0118.0124.31.25.34.8－7.3SO3pH10.5。SO3。130℃10℃。3.4。8。。9。pH。。pHpH10.61。pH。NaOHNaOH。41ρNaOH0.01mol/LpH10.5。2130℃10℃。2555Fig．5Scalingfeaturesofmodifiedhigh-saltwastewaterinfluegassystem3。1．J．201632316-20．2．J．20164719-12．3．J．201729128-32．4．J．2016459105-108．5．PM2.5J．2016304953-960．6．J．201746261-66．7．J．201531537-39．8．J．2016351255-262．9．－J．20164912174-179．1982－、、。櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅[e-mail]-UNITSrecommendationsforsystemdesignandoperationZ．Berlin2009221-229．6BrannockWDHwYWLeslieG．EvaluationofmembranebioreactorperformanceviacomputationalfluiddynamicsmodelingEffectofmembraneconfigurationandmixingZ．UK2007．7NicolasＲINMW．ModelinghydrodynamicsinMBＲsystemsusingcomputationalfluiddynamicsZ．2008．8JankhahPBCC．HowfoulinginsubmergedhollowfibermembranesisrelatedtosurfaceshearforcesZ．Ghent200826-37．9．J．2008251144-47．10DrewsAPrieskeHKraumeM．Optimierungderblasen-undzirkulationsstrmunginmembranbelebungsreaktorenJ．ChemieIngenieurTechnik200880121795-1801．11Khalili-GarakaniAMehrniaMＲMostoufiNetal．AnalyzeandcontrolfoulinginanairliftmembranebioreactorCFDsimulationandexperimentalstudiesJ．ProcessBiochemistry20114651138-1145．12LiuWJordanEKippaxVetal．UsingcomputationalfluiddynamicsCFDandparticleimagevelocimetryPIVtocharacterizeairandwatertwophaseplugflowmembranecleansystemJ．ProceedingsoftheWaterEnvironmentFederation2009142798-2811．13．MBＲCFDJ．20134107-119．14．A2/O-MBＲDOJ．201636161-71．1960－。[e-mail]。[e-mail]35