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烟气脱硫工艺.pdf

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komnitsas.qxd1/2/20024:27Page109 GlobalNest:theInt.J.Vol3,No2,pp109-116,2001 Copyright©2001GLOBALNEST PrintedinGreece.Allrightsreserved ENVIRONMENTALIMPACTSATCOALWASTEDISPOSALSITES- EFFICIENCYOFDESULFURIZATIONTECHNOLOGIES K.KOMNITSAS1*1Dep.ofMiningandMetallurgicalEng., I.PASPALIARIS1NationalTechnicalUniversityofAthens, ZografosCampus,GR15780Athens,GREECE M.ZILBERCHMIDT2 2MoscowStateMiningUniversity, S.GROUDEV3Dep.ofPhysicsofRockResearch, LeninskyAve.6,117935Moscow,RUSSIA 3UniversityofMiningandGeologySofia, Dept.ofEngineeringGeoecology, StudentskiGradDurvenitza,1100Sofia,BULGARIA Received:04/10/01*towhomallcorrespondenceshouldbeaddressed Accepted:05/12/01e-mail:komni@central.ntua.gr ABSTRACT DuringbeneficiationofcoalatthecoalminingareaofTula,Russia,hugevolumesofcoalwasteswith considerableresidualpyritecontentareproduced.Thesewastesthatareusuallydisposedofwithout specificcareintheenvironmentareactivesourcesofcoalminedrainagegenerationwhichseverely contaminatessoils,surface-andgroundwaterandendangerstheecosystemsofthearea. Inthepresentpaperacompleteenvironmentalcharacterizationresearchiscarriedoutinorderto determinethecharacteristicsofthewastes,establishtheiracidgenerationpotential,theleachability andbio-availabilityofseveralhazardousconstituentsandpredicttheenvironmentalimpactsatthedis- posalsites.Basedonthisdataaswellasonprocessparametersanddisposalpractices,anevaluationof desulphurizationtechnologiesiscarriedout. Experimentalstudiesrevealthatthesewastesareconsideredaspermanentsourcesofcoalmine drainagegenerationandthereforecauseextensivecontaminationatthedisposalsites.Inaddition,due toseveraltechnologicalconstraintsofthedesulphurizationtechnologiesandthecharacteristicsofthe wastes,thepotentialofinsitudesulphurizationisconsideredlow.Desulphurizationtechnologiespre- sentahigherpotentialonlyifappliedintheframeworkofanintegratedwastemanagementscheme. INTRODUCTION AtTulacoalregion,200kmsouthofMoscow,inherentpyriteandthegenerationofacidity. +22- Russia,coalbenefi