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- W2384682625 abstract "Two different rank coals were extracted with carbon disulfide and N-melthy-2-pyrolidinone(CS2/NMP) mixed solvent.It was found that the extraction process is not only dissolution of the soluble fraction,but also there is suspension effect,for extraction fraction in the mixed solvent,which couldn't deposit in the residue under centrifugal conditions.The high extraction yield of coals with the CS2/NMP mixed solvent is not obtained entirely from the dissolution of molecular scale.By adding back-extractant into the extraction solution,two suspended substances are highly enriched to form two solids: ultra-pure coal and caking components.The coal inbuilt state model and its conception are proposed.Coal is a mixture composed of five group components: macromolecular components,meso-molecular components(meso-molecular componentsⅠ and meso-molecular componentsⅡ),sub meso-molecular components and micro-molecular components.The five group components are connected by the means of inbuilt state distribution and can be separated by CS2/NMP solvent during the extraction and back-extraction process.Finally,the extraction process is rationally explained using the coal inbuilt state structural model." @default.
- W2384682625 created "2016-06-24" @default.
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- W2384682625 date "2008-01-01" @default.
- W2384682625 modified "2023-09-26" @default.
- W2384682625 title "TEM Analysis of Coal Extraction and Coal Inbuilt State Structural Model" @default.
- W2384682625 hasPublicationYear "2008" @default.
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