✦ LIBER ✦

99/02371 Drying of biomass particles in fixed and moving beds

Publisher: Elsevier Science
Year: 1999
Weight: 204 KB
Volume: 40
Category: Article
ISSN: 0140-6701
DOI: 10.1016/s0140-6701(99)98140-7

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✦ Synopsis

An assessment of the enhanced solubility of Upper Freeport coal in mixed N-methylpyrrolidone (NMP)-carbon disulfide solvent with respect to the self-association properties of NMP. It was found that the addition of a nonpolar solvent breaks up the self-association of NMP. Thus, diluting NMP with a non-polar co-solvent would impart a thermodynamic advantage to the solvent system prior to mixing it with the coal. It is suggested that the strong osmotic forces exerted by this solvent on the expanded coal 'gel' lead to fracture. Thus some of the enhanced solubility of the coal in the mixed solvents was due to the presence of macroscopic particles broken off from the samples. 99102370

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