Process for separating crude oil components
US4673490A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1985 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Aug 23, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G7/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A more effective and efficient method for separating the components of crude oil, particularly off-gases and LSR naphtha and heavy naphtha, is disclosed. The crude oil is heated and fed to a prefractionator that operates at relatively high pressure and uses a multiple condenser/accumulator overhead system for collecting and separating off-gases and LSR naphtha while avoiding the problems of water condensation in the top section of the prefractionator and the need to compress overhead vapors to fuel gas system pressure. After heating, the bottoms from the prefractionator are fed to an atmospheric crude tower to recover desirable components such as diesel, kerosene, atmospheric gas oils and reduced crude. The overheads of such crude tower are processed through a set of overhead condensers/accumulators for collecting the small amounts of naphtha and sending them to a naphtha stripper column for further recovery and purification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.