发明授权
- 专利标题: Regeneration of severely deactivated reforming catalysts
- 专利标题(中): 严重失活的重整催化剂的再生
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申请号: US942694申请日: 1992-09-09
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公开(公告)号: US5776849A公开(公告)日: 1998-07-07
- 发明人: Shun Chong Fung , Yao-Jyh Robert Huang , John Francis Walsh , Gary Brice McVicker , Kenneth Ray Clem
- 申请人: Shun Chong Fung , Yao-Jyh Robert Huang , John Francis Walsh , Gary Brice McVicker , Kenneth Ray Clem
- 申请人地址: NJ Florham Park
- 专利权人: Exxon Research & Engineering Company
- 当前专利权人: Exxon Research & Engineering Company
- 当前专利权人地址: NJ Florham Park
- 主分类号: B01J29/62
- IPC分类号: B01J29/62 ; B01J29/90 ; B01J38/44 ; C07B61/00 ; C07C5/387 ; C07C5/41 ; C07C15/04 ; C10G35/095 ; B01J38/42
摘要:
The invention is directed a process for regenerating deactivated reforming catalysts comprising at least one Group VIII metal on zeolite L, preferably wherein the catalysts are extruded using a binder material such as alumina or silica. The process includes: a) coke burn at severe conditions to improve the accessibility of the Group VIII catalytic metal particles by transporting them to the outside of the zeolite microchannels; b) catalytic metal redispersion by wet oxychlorination with elemental chlorine and oxygen; c) stripping with a gas stream comprising oxygen and water at low pressure to remove as much residual chlorine as possible; and d) reduction of catalytic metals with hydrogen at low pressure. The process is particularly effective for recovering activity of catalysts which have been severely deactivated.
公开/授权文献
- US5984524A Apparatus and method for testing product heat-resistance 公开/授权日:1999-11-16
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