HYDROCARBON PROCESSING CATALYST PRESULFING PROCESS
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- EURECAT SA
- Filing Date
- 1989-07-20
- Publication Date
- 1991-01-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing methods for treating hydrocarbon catalysts are inadequate in achieving effective presulfurization without the use of hydrogen, which is crucial for maintaining catalyst activity and stability.
A method involving the treatment of a catalyst with an aqueous solution of ammonium disulfide at temperatures between 0 and 50°C in the presence of a sulfur additive, specifically using diethanol disulfide (DEODS), to achieve presulfurization without hydrogen.
The method effectively presulfurizes the catalyst, enhancing its activity and stability by incorporating sulfur without the use of hydrogen, thereby improving its performance in hydrocarbon treatment processes.
Abstract
Description
i 2649907 The main patent application describes a processing method of a new or regenerated catalyst, containing a support based on at least one oxide of a metal or metalloid and at least one active metal, carried out in the absence of hydrogen and consisting of treating said catalyst with an aqueous solution of ammonium disulfide at a temperature between 0 and 50°C, in the presence of at least one sulfur additive. It has been discovered in the present invention that DEODS (or diethanol) disulfide) was a particularly popular additive. 2 2649907
Claims
DEMANDS Method according to claim 1 of the main patent application in which the additive is DEODS or diethanoldisulfide.