Isobutane conversion of naphtha in pretreater desulfurization
Patent 3996128 Issued on December 7, 1976. Estimated Expiration Date: 
December 7, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 7, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3105811 3291723 3314878 3409539 3497448 3884797 InventorsAssigneeApplicationNo. 639563 filed on 12/10/1975US Classes:208/89With hydrogenExaminersPrimary: Crasanakis, GeorgeAttorney, Agent or FirmAbstractIn a hydrocarbon conversion process for the catalytic desulfurization of a hydrocarbon feedstock the process is carried out at a low hydrogen partial pressure to obtain formation of a low sulfur product and conversion to butanes and propane, as desired, wherein the isoC4 /n-C4 ratio is high, the process being carried out in the presence of an active, stable and selective catalyst containing at least one noble metal component incorporated with a crystalline aluminosilicate. A pressure from 100 to below 500 psig is used. The process contemplates simultaneously pretreating reformer feedstock in the presence of a hydrocracking catalyst with controlled hydrocracking thereof. Preferred highly effective catalysts are those containing palladium incorporated with a crystalline aluminosilicate zeolite. | |
