发明名称 |
A METHOD OF RESTORING CATALYTIC ACTIVITY TO A SPENT HYDROPROCESSING CATALYST |
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. |
申请公布号 |
EP1718408(B1) |
申请公布日期 |
2016.06.22 |
申请号 |
EP20050711716 |
申请日期 |
2005.01.19 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
GINESTRA, JOSIANE, MARIE-ROSE;LEE, KENNETH, SCOTT;SEAMANS, JAMES, DALLAS |
分类号 |
B01J38/48;B01J23/94;B01J37/20;B01J38/12;B01J38/66;C10G49/02 |
主分类号 |
B01J38/48 |
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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