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首页> 美国政府科技报告 >Deashing of coal liquids with ceramic membrane microfiltration and diafiltration. Final technical report, August 4, 1992--September 30, 1995
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Deashing of coal liquids with ceramic membrane microfiltration and diafiltration. Final technical report, August 4, 1992--September 30, 1995

机译：用陶瓷膜微滤和渗滤除去煤液。最终技术报告，1992年8月4日 - 1995年9月30日

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摘要

Removal of mineral matter from liquid hydrocarbons derived from the direct liquefaction of coal is required for product acceptability. Current methods include critical solvent Deashing and filtration, both of which produce an ash reject stream containing up to 15% of the liquid hydrocarbon product. This program was directed towards development of an improved process for deashing and recovery of coal-derived residual oil: the use of ceramic membranes for high-temperature microfiltration and diafiltration. Using laboratory scale ceramic membrane modules, samples of a coal-derived residual oil containing ash were processed by crossflow microfiltration, followed by solvent addition and refiltration (diafiltration). Excellent recovery of deashed residual oil was demonstrated. Data from this program were used to develop preliminary estimates for production system capital and operating costs that will be used to assess economic feasibility. The first objective of this program was to demonstrate technical feasibility of crossflow microfiltration (MF) for removal of mineral matter from a coal derived residual oil. A second objective was to demonstrate technical feasibility of diafiltration of W concentrate using a hydrocarbon diluent.

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