High temperature depressurization for naphtha mercaptan removal
US6387249B1 · kind B1 · utility
7Cited by
8References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Oct 10, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to naphtha hydrodesulfurization incorporating either high temperature depressurization or controlled heating for mercaptan removal. More particularly, the invention relates to a naphtha hydrodesulfurization process, wherein the hot naphtha exiting the desulfurization reactor contains mercaptans, most of which are removed without olefin loss, by depressurizing the hot naphtha, thermally treating the hot naphtha, or some combination thereof. The desulfurized naphtha may be cooled and condensed to a liquid, separated from the gaseous H2S, stripped and sent to a mogas pool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.