Process for producing low sulfur content fuel oils

Details Process for producing low sulfur content fuel oils Process for producing low sulfur content fuel oils

1974-04-12

1976-10-05

Levine, Herbert

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 61, 208 89, 208 97, 208130, C10G 3706

Patent

active

039843050

ABSTRACT:
A process for producing a low sulfur content fuel oil in a high yield from a starting oil having a high sulfur content, which comprises (1) treating a residual petroleum oil with hydrogen at a temperature of about 350.degree. to 450.degree. C and a pressure of about 50 to 200 Kg/cm.sup.2 at a liquid hourly space velocity of about 0.2 to 4 l/H.l in the presence of a catalyst, (2) introducing an inert gas or steam at a temperature of about 400.degree. to 900.degree.C and pyrolyzing the treated oil at a temperature of about 350.degree. to 500.degree.C and at a pressure of about atmospheric pressure to 100 Kg/cm.sup.2 with a residence time of about 0.5 to 10 hours, and (3) hydrodesulfurizing the pyrolyzed oil at a temperature of about 300.degree. to 400.degree.C and a pressure of about 30 to 100 Kg/cm.sup.2 at a liquid hourly space velocity of about 0.5 to 4 l/H.l in the presence of a desulfurizing catalyst.

REFERENCES:
patent: 2871182 (1959-01-01), Weekman
patent: 3617481 (1971-11-01), Voorhies et al.
patent: 3720729 (1973-03-01), Sze et al.
patent: 3730875 (1973-05-01), Gleim et al.
patent: 3773653 (1973-11-01), Nongbri et al.
patent: 3775294 (1973-11-01), Peterson et al.
patent: 3781195 (1973-12-01), Davis et al.

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