发明名称 |
Method of restoring catalytic activity to a spent hydroprocessing catalyst, a spent hydroprocessing catalyst having restored catalytic activity, and a hydroprocessing process |
摘要 |
Disclosed is method for restoring catalytic activity to a hydroprocessing catalyst that has become spent due to its use or to the deposition of carbon thereon. The method includes a carbon reduction step whereby carbon is removed from the spent hydroprocessing catalyst in a controlled manner to within a specifically defined concentration range. Following the carbon removal step, the resulting catalyst, having a reduced concentration of carbon, is subjected to a chelation treatment whereby the resulting carbon-reduced catalyst is contacted with a chelating agent and aged for a time period necessary for realizing the benefit from the controlled carbon reduction step. In a preferred embodiment, the catalyst resulting from the chelation treatment is subjected to a sulfurization treatment involving the incorporation of elemental sulfur therein and contacting therewith an olefin.
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申请公布号 |
US2005159296(A1) |
申请公布日期 |
2005.07.21 |
申请号 |
US20050039677 |
申请日期 |
2005.01.19 |
申请人 |
GINESTRA JOSIANE M.;SEAMANS JAMES D.;LEE KENNETH S. |
发明人 |
GINESTRA JOSIANE M.;SEAMANS JAMES D.;LEE KENNETH S. |
分类号 |
B01J23/94;B01J37/20;B01J38/12;B01J38/48;B01J38/66;C10G49/02;(IPC1-7):B01J20/34 |
主分类号 |
B01J23/94 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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