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公开(公告)号:US4816140A
公开(公告)日:1989-03-28
申请号:US32699
申请日:1987-04-01
CPC分类号: C10G21/003 , C10G31/11
摘要: For deasphalting an asphaltene-containing hydrocarbon oil, employed is a hydrocarbon solvent of 3-8 carbon atoms, resulting in an asphaltic phase and a solution of deasphalted oil in the solvent. The solvent is then separated from the deasphalted oil, by passing the solution tangentially across an inorganic membrane of pore radii from 2 to 15 nonometers: the obtained filtrate has an increased solvent content and may be recycled. The deasphalted oil is selectively retained on the upstream side of the membrane.
摘要翻译: 对于含沥青质的烃油进行脱沥青,使用的是3-8个碳原子的烃溶剂,导致沥青相和脱沥青油在溶剂中的溶液。 然后将溶剂与脱沥青油分离,通过将溶液切向地穿过孔半径的无机膜从2至15个非计算机:所得滤液具有增加的溶剂含量并可循环使用。 脱沥青油选择性地保留在膜的上游侧。