# US 7,744,748 B2 · Process for desulphurizing a hydrocarbon feed by adsorption/desorption

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- Number: US 7,744,748 B2
- Document ID: US7744748B2
- Status: Granted
- Kind: B2
- Application number: 10/898,185
- Filed: 2004-07-26
- Published: 2005-03-24
- Granted: 2010-06-29
- Earliest claimed: 2003-07-25
- Assignees: Institut Francais du Petrole
- Inventors: Alexandre Nicolaos; Florent Picard
- Web page: https://patentgrep.com/patent/US7744748B2

## CPC

- C10G 67/16: plural parallel stages only
- C10G 25/12: Recovery of used adsorbent
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES

## Abstract

A process for reducing the quantity of sulphur present in a hydrocarbon feed such as a gasoline or a gas oil, comprises: d) bringing said feed containing sulphur-containing compounds into contact with an adsorbent having a selectivity for sulphur-containing compounds under conditions for producing, at the outlet from the contact zone, a desulphurized effluent which is collected, said adsorption being carried out in the liquid phase or in the gas phase; e) gas phase desorption of the sulphur-containing compounds present on said adsorbent using a hydrogen-containing gaseous fluid derived from a hydrodesulphurization zone to obtain a gaseous effluent comprising hydrogen and desorbed sulphur-containing compounds; sending the gaseous effluent from step b) to said hydrodesulphurization zone and desulphurizing it therein.

## Claims

### Claim 1

A process for reducing the quantity of sulphur present in a gasoline feed, comprising the following steps:
a) bringing said gasoline feed containing sulphur-containing compounds into contact with an adsorbant having a selectivity for sulphur-containing compounds under conditions for producing, at the outlet from the contact zone, a desulphurized effluent which is collected, said adsorption being carried out in the gas phase;
b) gas phase desorption of the sulphur-containing compounds present on said adsorbant using a gaseous fluid comprising hydrogen and deriving from a hydrodesulphurisation zone to obtain a gaseous effluent comprising desorbed sulphur-containing compounds and the gaseous fluid comprising hydrogen;
c) sending the effluent from step b) to said hydrodesulphurization zone and desulphurizing it therein.

### Claim 2 (depends on 1)

A process according to claim 1, in which a step for stripping the hydrocarbons present in the pores of the adsorbant is carried out prior to the desorption step.

### Claim 3 (depends on 1)

A process according to claim 1, in which the adsorbant comprises at least one component from silicas, aluminas, zeolites, activated charcoal, clays, metal oxides or reduced metals.

### Claim 4 (depends on 1)

A process according to claim 1, in which adsorption steps and desorption steps are carried out successively in a permutable reactor, a simulated moving or a moving bed.