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Volume 5 Issue 1
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NieYao, ZhaoYuechao. Research status and engineering application of competitive adsorption of multicomponent mixed gases in coal[J]. Journal of Mining Science and Technology, 2020, 5(1): 45-57.
Citation: NieYao, ZhaoYuechao. Research status and engineering application of competitive adsorption of multicomponent mixed gases in coal[J]. Journal of Mining Science and Technology, 2020, 5(1): 45-57.
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Research status and engineering application of competitive adsorption of multicomponent mixed gases in coal

  • SchoolofEmergencyManagementandSafetyEngineering,ChinaUniversityofMining&Technology-Beijing,Beijing100083,China

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  • Adsorptioncharacteristicsofgasesincoalarethebasisofresearchonpreventionandcontrol ofdynamicdisastersofmethaneincoalmineandECBMengineering.Coalbedmethanecontainsnot onlyCH4,butalsoCO,CO2,H2Sandotheralkanes.Furthermore,intheprojectsofenhancedcoalbed methanerecoverybygasinjectionandpressuremeasurementbygasinjectionactivelyofcoalseam, competitiveadsorptionbehavioroccursduetothedifferenceadsorptioncapacityofdifferentgasesin coal.First,themechanismofcompetitiveadsorptionofgasincoalwasanalyzed.Themulti-component gasadsorptionequilibriumpredictionmodelincoalporousmediawascomparedandanalyzed.Theinfluencingfactors,characteristicsofadsorptionswellingandadsorptiondynamicbehaviorofcompetitive adsorptionwerediscussed.Second,thephenomenonofpermeabilitydecaycausedbytheswellingdeformationintheprocessofCO2-ECBM,thederivedoutburstdisasterriskandthesupercriticalCO2adsorptionwerediscussed.Finally,theadsorptionequilibriumpredictionmodelofmulticomponentgasesin coal,theengineeringapplicationofcoal-rockdynamicdisasterprevention,ECBMandPSAtechnology werediscussed.
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