Reducing hydrogen consumption in hydrotreating petroleum fractio

Details Reducing hydrogen consumption in hydrotreating petroleum fractio Reducing hydrogen consumption in hydrotreating petroleum fractio

1975-12-24

1976-12-14

Crasanakis, George

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 97, C10G 3706

Patent

active

039974278

ABSTRACT:
A process for hydrotreating middle distillate fraction petroleum feed stocks wherein hydrogen requirements for the hydrotreater are reduced by first passing the feed stock and steam to a steam hydroconversion zone over a dual function catalyst comprising molybdenum on a chromium supported on ferric oxide support or on a high surface area alumina support. In the steam hydroconversion zone a portion of the feed reacts with the steam to produce hydrogen via a steam reforming reaction. This hydrogen is used in situ to saturate a substantial portion of the olefins and remove some of the sulfur compounds present in the feed stock, thereby partially refining same. The partially refined feed is then passed to a hydrotreating zone for further treatment with greatly reduced hydrogen requirements in said hydrotreating zone.

REFERENCES:
patent: 3050457 (1962-08-01), Wilson
patent: 3098029 (1963-07-01), Snyder, Jr.
patent: 3248317 (1966-04-01), Pohlenz et al.
patent: 3679576 (1972-07-01), McDonald
patent: 3694344 (1972-09-01), Munro
patent: 3844734 (1974-10-01), Johnson
patent: 3928176 (1975-12-01), Hamner et al.

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