Demetalation of hydrocarbonaceous feedstocks using monobasic carboxylic acids and salts thereof
US4988433A · kind A · utility
13Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1990 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | May 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Monobasic carboxylic acids or salts thereof are used to remove metals, particularly calcium and iron, from hydrocarbonaceous feedstocks. An aqueous solution of the acid is used to extract the metals from the feedstock prior to processing. Acetic acid is the preferred carboxylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.