Process for the fixed-bed sweetening of sour petroleum distillates with fraction temperatures of from about 125 to about 350 degrees C.
US5382354A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1991 |
| Grant date | Jan 17, 1995 |
| Priority date | — |
| Expiry date | Nov 13, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G27/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.