Petroleum desalting utilizing voltage modulation
US9764336B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2011 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | May 4, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C2201/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of removing entrained salt containing water from an inlet crude oil stream includes the steps of applying an electrical energy to at least one electrode of a plurality of horizontally oriented, spaced-apart electrodes (12, 14, 16) housed within an elongated desalting vessel (10) and distributing an inlet crude oil stream between the electrodes. Each electrode in the plurality of electrodes is housed in an upper portion of the desalting vessel and may be in communication with a first, second and third transformer (42, 44, 46), respectively. The electrical energy may be at a single frequency and voltage or at a modulated voltage. Or, the electrical energy may be a modulated frequency at a single or modulated voltage. Fresh water may be mixed with the inlet crude oil stream either exteriorly or interiorly of the vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.