发明名称 Vacuum pump oil recovery process
摘要 A novel treatment method for recovering halogenated vacuum pump oils such as chlorotrifluoroethylene, from contaminated filter papers. The process utilizes a trichlorotrifluoroethane (TCTFE) solvent and water mixture to extract the oil followed by vacuum distilling the resulting extractive.
申请公布号 US4615811(A) 申请公布日期 1986.10.07
申请号 US19850693399 申请日期 1985.01.22
申请人 WATKINS, LAWRENCE J. 发明人 WATKINS, LAWRENCE J.
分类号 B01D41/04;(IPC1-7):B01D23/24 主分类号 B01D41/04
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