Hydrocarbon upgrading process

Mineral oils: processes and products – Refining – Sulfur removal

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Details

208 58, 208 80, 208 89, 208212, C10G 2302

Patent

active

056038240

ABSTRACT:
The instant invention discloses a process of upgrading a waxy hydrocarbon feed mixture containing sulfur compounds which boils in the distillate range, in order to reduce sulfur content and 85% point while preserving the high octane of naphtha by-products and maximizing distillate yield. The process employs a single, downflow reactor having at least two catalyst beds and an inter-bed redistributor between the beds. The top bed contains a hydrocracking catalyst, preferably zeolite beta, and the bottom bed contains a dewaxing catalyst, preferably ZSM-5. A desulfurization catalyst may be added to either bed depending on sulfur distribution in the feed. The feed is separated into a lighter, lower boiling stream and a heavier, higher boiling stream. The effluent of the top bed cascades without interbed separation to the inter-bed redistributor, where it is recombined with the lighter stream. The recombined stream then enters the bottom bed for dewaxing. The product comprises a distillate having an increased yield and a naphtha having an increased research octane number, as compared with a feedstock in which the entire stream was hydrocracked.

REFERENCES:
patent: 3957625 (1976-05-01), Orkin
patent: 4235847 (1980-11-01), Scott
patent: 4283271 (1981-08-01), Garwood et al.
patent: 4390413 (1983-06-01), O'Rear et al.
patent: 4396538 (1983-08-01), Chen et al.
patent: 4481105 (1984-11-01), Chou
patent: 4681674 (1987-07-01), Graven et al.
patent: 4808350 (1989-02-01), Robbins et al.
patent: 4937051 (1990-06-01), Graven et al.
patent: 5246568 (1993-09-01), Forbus et al.

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