发明名称 |
A METHOD OF RESTORING CATALYTIC ACTIVITY OF A SPENT HYDROPROCESSING CATALYST |
摘要 |
A method of restoring catalytic activity to a spent hydroprocessing catalyst that has a first carbon concentration. The concentration of carbon on the spent hydroprocessing catalyst is reduced to provide a carbon-reduced catalyst having a second carbon concentration that is less than the first carbon concentration. The carbon-reduced catalyst is exposed to a solution, comprising a chelating agent and a solvent, for an aging time period sufficient to provide for a restored catalytic activity thereby resulting in an aged catalyst having incorporated therein the chelating agent and the solvent. The aged catalyst is exposed to conditions, including a drying temperature, so as to remove from the aged catalyst a portion of the solvent without removing a significant portion of the chelating agent from the aged catalyst thereby resulting in a dried aged catalyst. The dried aged catalyst is then sulfur treated to thereby provide a restored catalyst. The restored catalyst and those catalysts made by the treatment method can be used in a hydroprocessing process comprising contacting the restored catalyst with a hydrocarbon feedstock under hydroprocessing conditions. |
申请公布号 |
EP1737571(A1) |
申请公布日期 |
2007.01.03 |
申请号 |
EP20050711715 |
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;C10G45/04;C10G45/34;C10G45/46;C10G45/60;C10G47/02;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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