Process for the fixed-bed sweetening of sour petroleum distillat

Details Process for the fixed-bed sweetening of sour petroleum distillat Process for the fixed-bed sweetening of sour petroleum distillat

1991-11-13

1995-01-17

Lieberman, Paul

Mineral oils: processes and products

Refining

Sweetening

208189, C10G 2710, C10G 2900

Patent

active

053823540

ABSTRACT:
A process for the fixed-bed sweetening of sour petroleum distillates with fraction temperatures of from about 125.degree. to about 350.degree. C. and having an acid number of 0.03 mg of KOH/g or higher. The reduction of the acidity and the oxidation of the mercaptans necessary for the sweetening of the distillates are carried out together in a single stage by passing the distillate, in the presence of an oxidizing agent but in the absence of a basic solution, and particularly of an alkali-metal hydroxide solution, over an oxidation catalyst whose specific surface ranges from 1 to 10 m.sup.2 /gram, and preferably from 2 to 6 m.sup.2 /gram, and whose micropore volume ranges from 0.01 to 0.10 cm.sup.3 /gram, and preferably from 0.02 to 0.05 cm.sup.3 /gram.

REFERENCES:
patent: 4794097 (1988-12-01), Marty et al.
patent: 5026474 (1991-06-01), Blondeau et al.
patent: 5069777 (1991-12-01), Orgebin et al.
Patent Abstracts of Japan, unexamined applications; C Field, vol. 12, No. 496; Dec. 23, 1988, p. 104 c 555 of Kokai, JP 63-207865 (Gosei Senriyou Gijutsu Kenkyu Kumiai).

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