Claims
- 1. A process for the hydrogenation of aromatic compounds in a feed, said feed having an initial boiling point of more than 100.degree. C. and which contains at least 10% by weight of aromatic compounds, in the presence of a supported catalyst consisting essentially of at least one noble metal and at least 1% by weight of at least one halogen incorporated as a chlorinated or fluorinated support, at a temperature of 200-450.degree. C., a pressure of 1-25 MPa, at an hourly space velocity (HSV) of 0.1-10 h.sup.-1 and a hydrogen/feed volume ratio of 100-2000, in which the process is carried out in the presence of chlorine injected into the hydrogenation zone at a concentration of 0.5-500 ppm by weight with respect to the feed.
- 2. A process according to claim 1, in which the feed contains 5-2000 ppm by weight of sulphur.
- 3. A process according to claim 1, in which the feed contains 50-800 ppm by weight of sulphur.
- 4. A process according to claim 1, in which the aromatic compounds in the feed essentially contain 2-6 aromatic rings.
- 5. A process according to claim 1, in which the feed has an initial boiling point of at least 200.degree. C.
- 6. A process according to claim 1, in which the feed is an atmospheric gas oil or a vacuum distillate.
- 7. A process according to claim 1, in which a chlorinated organic compound is injected which is selected from the group consisting of dichloromethane, trichloromethane, dichloroethane, trichloroethane, tetrachloroethylene, hexachloroethane, and chloroform.
- 8. A process according to claim 1, in which the chlorine is injected into the feed.
- 9. A process according to claim 1, characterized in that the catalyst contains platinum deposited on a chlorinated or fluorinated alumina.
- 10. A process according to claim 9, wherein the initial boiling point of the feed is at least 150.degree. C.
- 11. A process according to claim 9, wherein the initial boiling point of the feed is at least 200.degree. C.
- 12. A process according to claim 11, wherein the concentration of aromatic compounds in the feed is at least 20% by weight.
- 13. A process according to claim 12, in which the feed contains 50-800 ppm by weight of sulphur.
- 14. A process according to claim 1, wherein the concentration of chlorine is 0.5-150 ppm.
- 15. A process according to claim 12, wherein the concentration of chlorine is 0.5-150 ppm.
- 16. A process according to claim 1, wherein the concentration of chlorine is 5-70 ppm.
- 17. A process according to claim 13, wherein the concentration of chlorine is 5-70 ppm.
- 18. A process according to claim 1, wherein the support is a chlorinated support.
- 19. A process according to claim 1, wherein the support is a fluorinated support.
- 20. A process according to claim 18, wherein said feed contains at least 20% by weight of polycyclic aromatic compounds.
- 21. A process according to claim 18, in which the feed contains 5-2000 ppm by weight of sulfur.
- 22. A process according to claim 18, in which the feed contains 50-800 ppm by weight of sulphur.
- 23. A process according to claim 18, wherein the feed is a 380-550.degree. C. cut.
Priority Claims (1)
Number |
Date |
Country |
Kind |
95 07726 |
Jun 1995 |
FRX |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation of U.S. patent application Ser. No. 08/671,501, filed Jun. 27, 1996, now U.S. Pat. No. 5,789,637 issued Aug. 4, 1998.
US Referenced Citations (5)
Continuations (1)
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Number |
Date |
Country |
Parent |
671501 |
Jun 1996 |
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