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《構(gòu)造煤與原生結(jié)構(gòu)煤的孔隙結(jié)構(gòu)及吸附性差異.pdf》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、2012年9月，第18卷，第3期，528—532頁September2012，Vo1．18，No．3，P．528—532構(gòu)造煤與原生結(jié)構(gòu)煤的孔隙結(jié)構(gòu)及吸附性差異王向浩，王延斌，高莎莎，洪鵬飛，張美娟中國礦業(yè)大學(xué)(北京)地球科學(xué)與測繪工程學(xué)院，北京100083摘要：基于晉城和焦作煤樣的吸附實驗，對比分析了構(gòu)造煤與原生結(jié)構(gòu)煤的孔隙結(jié)構(gòu)、吸附能力差異及其影響因素。結(jié)果表明，與原生結(jié)構(gòu)煤相比，構(gòu)造煤低溫液氮吸附兩階段的拐點相對提前，中值孔徑顯著偏小，總孔容、微孔一中孔范圍內(nèi)各孔徑段孔容以及相應(yīng)的孔比表面積均要大幾到十幾倍。構(gòu)造煤平均孔容具
2、有微孔一小孔>中孔的特點，原生結(jié)構(gòu)煤卻呈中孔>小孔一微孔的規(guī)律，但兩類煤體分段孔比表面積比例卻不存在實質(zhì)性差別。同時，構(gòu)造煤吸附能力顯著強于相同煤級的原生結(jié)構(gòu)煤，原因在于構(gòu)造煤的吸附孔孔容及相應(yīng)的孑L比表面積顯著較高。此外，構(gòu)造動力對煤孔隙結(jié)構(gòu)乃至煤吸附性的改造可能涉及與煤大分子結(jié)構(gòu)相關(guān)的微孔層次，有關(guān)現(xiàn)象和機理值得進一步深入探討。關(guān)鍵詞：構(gòu)造煤；原生結(jié)構(gòu)煤；孔隙結(jié)構(gòu)；吸附性中圖分類號：P618．11文獻標識碼：A文章編號：1006—7493(2012)03—0528—05oDifferencesinPoreStructuresa
3、ndAbsorptivityabetweenTectonicallyDeformedandUndeformedCoals高ⅡWANGXianghao’WANGYanbin’GAOShasha，HONGPengfei’ZHANGMeijuan’，，，校r【CollegeofGeoscienceandSurveyingEngineering，ChinaUniversityofMining&Technology，Beijing100083，ChinaC也aAbstract：Basedontheadsorptionexperimentof
4、thecoa1samplesfromtheJinchengandJiaozuoareas，thedifferenceand質(zhì)Ugeologicalcontrolsofporestructureandadsorptivitybetweenthetectonicallydeformedandundeformedcoalswerecomparatively學(xué)diSscussed．Itwasfoundthattheturningpointbetweentwoliquidnitrogenadsorptionstagesforthedefor
5、medsamplesmoveforwardcomparingtotheundeformedsamples，indicatingthesmallermediandiameterandthelargervolumeandspecificsurface報areaoftotal，middleandmicro—poresinthedeformedsamples．Tectonicallydeformedcoalshavelargermicro—andsmall—porevolumesandsmallermiddle-porevolume，wh
6、ileundeformedcoalshowlargermiddle—porevolumeandfewersmall—andmicro—porevolume，butthespecificsurfaceareaatvariousporesizespandoesnotexistsubstantialdifferencesbetweentwotypesofthecoals．TheabSOrptivitv0fthedeformedcoalsissignificantlystrongerthanthatofundeformedcoalswit
7、hthesamecoalrankbecausetheabsorptionporevolumeandspecificsurfaceareaofthede~rmedsamplesissignificantlyhigher．Inaddition，itwassuggestedthattheaherationofthetectonicdynamicstotheporestructureandadsorptivityofcoalmayinvolvethemicro—porerelatedtothemacro—molecularstructur
8、eofcoal，whichisworthyoffurtherinvestigation．Keywords：tectonicallydeformedcoal；undeformedcoal；porestructure；absorptivityFirst
