发明授权
- 专利标题: Continuous lubricating oil dewaxing process
- 专利标题(中): 连续润滑油脱蜡过程
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申请号: US140452申请日: 1988-01-04
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公开(公告)号: US4923591A公开(公告)日: 1990-05-08
- 发明人: Kenneth R. Graziani , James R. Katzer , Chwan P. Kyan
- 申请人: Kenneth R. Graziani , James R. Katzer , Chwan P. Kyan
- 申请人地址: NY New York
- 专利权人: Mobil Oil Corporation
- 当前专利权人: Mobil Oil Corporation
- 当前专利权人地址: NY New York
- 主分类号: C10G45/64
- IPC分类号: C10G45/64
摘要:
Process for the continuous catalytic dewaxing of lube containing feeds wherein the feed effectively moves countercurrently to the catalyst. The process is based on the discovery that in a two-stage catalytic dewaxing process the stage-two or back-end dewaxing catalyst shows a concave upward aging when it is used to produce a targeted pour point lube, but the back-end dewaxing catalyst can be used as a stage one or front-end dewaxing catalyst to produce an intermediate pour point product.
公开/授权文献
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