高濃度石炭-水スラリーの流動性に対するアルコールベース多鎖型高分子量非イオン界面活性剤の効果

概要

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A fuel of coal-water slurry (hereinafter simply called CWS) must be combustible in an as-prepared condition without previous dyhydration. For this purpose, it was necessary to increase the concentration of coal in CWS.<BR>Thus, alcohol based multi-branched high molecular nonionic surface active agents were synthesized to evaluate their effects on the fluidity of CWS while measuring their physicochemical properties. The results indicated the following.<BR>1) For CWS of Tatung coal, the coal concentration could not be increased beyond 59% in the absence of a surface active agent.<BR>2) Copolymers prepared by adding propylene oxide and ethylene oxide to glycerol, diglycerol or sorbitol showed excellent fluidity. That is, by these agents, Tatung coal CWS was made having a viscosity of 1, 300 cP at a coal concentration of 71%.<BR>3) Among the above copolymers, a multi-branched high molecular nonionic surface active agent, whose side chain had a molecular weight of 10, 000 or more and an ethylene oxide content between 85 and 95%, improved the fluidity of CWS most effectively.
社団法人日本油化学会の論文