Mobil Oil Corporation

Hsin-Ju J Wang

Rene B LaPierre

Chwan P Kyan

Amilcare Ramella

An improved process for catalytically dewaxing low nitrogen content hydrocarbon oils, such as distilled hydrocracker bottoms which normally form by-product naphtha of variable, but poor octane quality. The improvement is achieved by doping the low nitrogen content oil with a small amount of high nitrogen content gas oil, resulting in a by-product naphtha having a clear research octane of about 90, which octane is relatively insensitive to adjustment of pour point during processing.

Catalytic dewaxing

Yield selectivity of a multibed catalytic reformer operating below design capacity is enhanced by adjusting inlet temperature of at least one catalyst bed to near-quenching conditions while adjusting the inlet temperature of at least one catalyst bed to favor yield selective reforming reactions. Significant increases in C.sub.5 + yields are obtained without any modification of the reforming unit.

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Cherry Hill, NJ, United States of America

Hsin-Ju J Wang