Process for hydrotreating a hydrocarbon feedstock and apparatus for carrying out same
US6217749A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
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; PA1 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, PA1 the hydrocarbon feedstock being then injected into the first injection zone (4) of the fractionation unit (3), PA1 the liquid bottoms being removed through the draw-off line (6) of the injection zone (4) and passed into a hydrotreatment reactor (2), PA1 the effluents from said reactor (2) being injected into a second injection zone (5) of the fractionation unit (3), PA1 the light fractions leave the common zone (8) through an evacuation line (11), and PA1 the heavy liquid bottoms of the second injection …
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