Invention Grant
- Patent Title: Method for recovering reforming catalyst, catalyst and adsorbent
- Patent Title (中): 回收重整催化剂,催化剂和吸附剂的方法
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Application No.: US12321769Application Date: 2009-01-26
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Publication No.: US07767609B1Publication Date: 2010-08-03
- Inventor: Wen-Cheng Kang , Hung-Tzu Chiu , Shu-Li Wang , Cheng-Chieh Shih , Cheng-Tsung Hong
- Applicant: Wen-Cheng Kang , Hung-Tzu Chiu , Shu-Li Wang , Cheng-Chieh Shih , Cheng-Tsung Hong
- Applicant Address: TW Taipei
- Assignee: Chinese Petroleum Corporation
- Current Assignee: Chinese Petroleum Corporation
- Current Assignee Address: TW Taipei
- Agency: Cooper & Dunham LLP
- Agent William E. Pelton, Esq.
- Main IPC: B01J38/56
- IPC: B01J38/56

Abstract:
A method for recovering reforming catalyst comprises obtaining spent reforming catalysts; immersing the spent reforming catalysts with different degrees of aging into a light solution to obtain immersed catalysts and allowing the light solution to enter pores in the spent reforming catalysts to lower a pseudo-skeletal density of each spent reforming catalyst to obtain immersed catalysts; immersing the immersed catalysts into a heavy solution that has a density greater than pseudo-skeletal density of the immersed catalysts and replacing the light solution in the pores in the immersed catalysts by the heavy solution to increase density of the immersed catalysts; and awaiting the immersed catalysts to settle in the heavy solution to obtain settled catalysts, wherein different settling velocities due to aging creates layers of settled catalysts. Therefore, the reforming catalysts with different degrees of aging are easily classified into different layers, which can be reused for cost saving.
Public/Granted literature
- US20100190631A1 METHOD FOR RECOVERING REFORMING CATALYST, CATALYST AND ADSORBENT Public/Granted day:2010-07-29
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