Process for hydrotreating a hydrocarbon feedstock and apparatus for carrying out same
US6869576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2000 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Apr 17, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G49/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for hydrotreating a hydrocarbon feedstock (1) involving the use of at least one hydrotreatment, particularly hydrodesulfurization, reactor (2) and a fractionation unit (3), which latter contains two distinct injection zones (4, 5) for the hydrocarbon feedstocks, a common zone (8) of vaporization of the light fractions and two distinct draw-off lines (6, 7) for the liquid bottoms; the hydrocarbon feedstock (1) being subjected to a preliminary treatment either in a first hydrodesulfurization reactor (20) the operating conditions of which (P, T, LHSV) may be different from those of the hydrotreatment reactor (2), or in a sweetening apparatus or else in a sulfur trap, the hydrocarbon feedstock being then injected into the first injection zone (4) of the fractionation unit (3), the liquid bottoms being removed through the draw-off line (6) of the injection zone (4) and passed into a hydrotreatment reactor (2), the effluents from said reactor (2) being injected into a second injection zone (5) of the fractionation unit (3), the light fractions leave the common zone (8) through an evacuation line (11), and the heavy liquid bottoms of the second injection zone (5) being removed t…
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