高濃度石炭-水スラリーの流動性に対するポリエチレンポリアミン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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The authors synthesized polyethylenepolyamine base multi-branched high molecular weight nonionic surface active agents and studied their physicochemical properties so as to evaluate their effects for improving the fluidity of coal-water slurry (CWS). The following results were obtained.<BR>1) A surface active agent prepared by the addition of propylene oxide (PO) and ethylene oxide (EO) to polyethylenepolyamine (PEPA) improved the fluidity of CWS.<BR>2) Surface active agents prepared by adding only EO to PEPA brought about less improvement than the above mentioned agent.<BR>3) The effects of the agents depended on the molecular weight of polyoxyalkylene side chain and improvement was best at a molecular weight of 5, 000 or more.<BR>4) Using a small amount of the above agent, Tatung coal CWS with low viscosity and high coal concentration was made.
社団法人日本油化学会の論文