Method for reducing the naphthenic acid content of crude oil and fractions
US6531055B1 · kind B1 · utility
9Cited by
6References
5Claims
0Family size
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Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Mar 11, 2003 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G19/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for reducing naphthenic acid content of crude oils and its fractions in the presence of an aqueous base selected from Group IA and IIA hydroxides and ammonium hydroxide and mixtures thereof, a phase transfer agent at a temperature and pressure effective to produce a treated petroleum feed having a decreased naphthenic acid content and an aqueous phase containing naphthenate salts, phase transfer agent and base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.