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1. (WO2015177531) EXTRACTION D'ALCÈNES
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS

1. A process for producing gasoline having a reduced alkene content and a reduced organosulfur content,

which process comprises contacting gasoline obtainable by a fluid catalytic cracking process, which gasoline comprises at least one alkene and at least one organosulfur compound, with an extraction solvent suitable for extracting alkenes and organosulfur compounds, which extraction solvent comprises a polar organic solvent,

and thereby forming

i) a first phase comprising said extraction solvent, at least one extracted alkene, and at least one extracted organosulfur compound, and

ii) a second phase comprising gasoline having a reduced alkene content and a reduced organosulfur content compared to said gasoline obtainable by a fluid catalytic cracking process.

2. A process according to claim 1 which further comprises recovering said gasoline having a reduced alkene content and a reduced organosulfur content.

3. A process according to claim 2, wherein said recovering comprises separating at least some of the second phase from the first phase.

4. A process according to any one of the preceding claims which further comprises recovering at least some of the first phase.

5. A process according to claim 4, wherein said at least some of the first phase comprises said extraction solvent, at least one extracted alkene, and at least one extracted organosulfur compound.

6. A process according to any one of the preceding claims, wherein the gasoline having a reduced alkene content and a reduced organosulfur content comprises:

a total weight percentage of alkene compounds which is less than or equal to 90% of the total weight percentage of alkene compounds in the gasoline obtainable by a fluid catalytic cracking process; and

a total weight percentage of organosulfur compounds which is less than or equal to 50% of the total weight percentage of organosulfur compounds in the gasoline obtainable by a fluid catalytic cracking process.

7. A process according to any one of the preceding claims, wherein the extraction solvent comprises a polar protic organic solvent.

8. A process according to any one of the preceding claims, wherein the extraction solvent comprises an alcohol.

9. A process according to any one of the preceding claims, wherein the extraction solvent comprises a monohydric alcohol.

10. A process according to any one of the preceding claims, wherein the extraction solvent comprises methanol or ethanol, preferably methanol.

11. A process according to any one of the preceding claims, wherein the extraction solvent comprises a first solvent which is said polar organic solvent and a second solvent, which second solvent is a polar protic organic solvent.

12. A process according to claim 11, wherein the second solvent is an alcohol.

13. A process according to claim 11 or claim 12, wherein the second solvent is a polyhydric alcohol.

14. A process according to any one of claims 11 to 13, wherein the second solvent is a dihydric alcohol.

15. A process according to any one of claims 11 to 14, wherein the second solvent is ethylene glycol or propylene glycol, preferably ethylene glycol.

16. A process according to any one of claims 11 to 15, wherein the first solvent is selected from methanol and ethanol, and the second solvent is selected from ethylene glycol and propylene glycol.

17. A process according to any one of claims 1 to 10, wherein the extraction solvent comprises a first solvent which is said polar organic solvent and a second solvent, which second solvent is propylene carbonate or dimethyl sulfoxide (DMSO).

18. A process according to any one of claims 11 to 17, wherein the extraction solvent comprises:

i) the first solvent in an amount of greater than or equal to 30 wt%; and ii) the second solvent in an amount of greater than or equal to 20 wt%;

wherein the percentage by weight is relative to the total weight of the extraction solvent.

19. A process according to any one of claims 11 to 18, wherein the extraction solvent comprises:

i) the first solvent in an amount of from 30 wt% to 90 wt%; and

ii) the second solvent in an amount of from 10 wt% to 60 wt%;

wherein the total amount of the first solvent and the second solvent is greater than or equal to 80 wt%, and wherein the percentage by weight is relative to the total weight of the extraction solvent.

20. A process according to any one of the preceding claims, wherein the extraction solvent comprises:

i) methanol in an amount of from 50 wt% to 70 wt%;

ii) ethylene glycol in an amount of from 30 wt% to 50 wt%;

wherein the total amount of methanol and ethylene glycol is greater than or equal to 80 wt%, and wherein the percentage by weight is relative to the total weight of the extraction solvent.

21. A process according to any one of claims 11 to 20, wherein the first solvent is suitable for extracting alkenes and organosulfur compounds; and the second solvent is miscible with the first solvent.

22. A process according to any one of the preceding claims, wherein the process is carried out at a temperature of less than or equal to 100°C.

23. A process according to any one of the preceding claims, wherein the process is carried out at an absolute pressure of less than or equal to 0.2 MPa.

24. A process according to any one of the preceding claims, wherein the ratio by weight of the gasoline obtainable by a fluid catalytic cracking process to the extraction solvent is from 3 : 1 to 1 :3.

25. A process according to any one of the preceding claims, wherein the gasoline obtainable by a fluid catalytic cracking process comprises greater than 20 wt% of alkenes, wherein the percentage by weight is relative to the total mass of the gasoline obtainable by a fluid catalytic cracking process.

26. A process according to any one of the preceding claims, wherein the gasoline obtainable by a fluid catalytic cracking process comprises greater than 30 wt% of alkenes, wherein the percentage by weight is relative to the total mass of the gasoline obtainable by a fluid catalytic cracking process.

27. A process according to any one claims 4 to 26, wherein the recovered first phase comprises greater than or equal to 2 wt% of alkene compounds, wherein the percentage by weight is relative to the total mass of the recovered extraction solvent.

28. A process according to any one of claims 4 to 27, wherein the recovered first phase comprises greater than or equal to 4 wt% of alkene compounds, wherein the percentage by weight is relative to the total mass of the recovered extraction solvent.

29. A process according any one of claims 4 to 28, wherein the process further comprises performing a reaction on at least part of the recovered first phase to produce one or more further organic compounds.

30. A process according to claim 29, wherein said reaction is a catalytic reaction.

31. A process according to claim 30, wherein said catalytic reaction comprises heating the recovered first phase in the presence of a zeolite catalyst.

32. A process according to any one of claims 29 to 31, wherein the one or more further organic compounds produced are selected from alkanes, alkenes, and aromatic hydrocarbons.

33. A process for producing one or more further organic compounds, which process comprises:

a) providing a recovered first phase, which recovered first phase is obtainable by: contacting gasoline obtainable by a fluid catalytic cracking process, which gasoline comprises at least one alkene and at least one organosulfur compound, with an extraction solvent suitable for extracting alkenes and organosulfur compounds, which extraction solvent comprises a polar organic solvent,

and thereby forming

i) a first phase comprising said extraction solvent, at least one extracted alkene, and at least one extracted organosulfur compound, and

ii) a second phase comprising gasoline having a reduced alkene content and a reduced organosulfur content compared to said gasoline obtainable by a fluid catalytic cracking process,

and recovering at least part of the first phase; and

b) performing a reaction on at least part of the recovered first phase to produce one or more further organic compounds.

34. A process according to claim 33, wherein said reaction is a catalytic reaction.

35. A process according to claim 34, wherein said catalytic reaction comprises heating the recovered first phase in the presence of a zeolite catalyst.

36. A process according to any one of claims 33 to 35, wherein the one or more further organic compounds produced are selected from alkanes, alkenes, and aromatic hydrocarbons.

37. A process according to any one of claims 33 to 36, wherein contacting gasoline obtainable by a fluid catalytic cracking process, which gasoline comprises at least one alkene and at least one organosulfur compound, with an extraction solvent suitable for extracting alkenes and organosulfur compounds, which extraction solvent comprises a polar organic solvent is as defined in any one of claims 1 to 28.

38. A composition comprising:

a) a first phase which comprises an extraction solvent suitable for extracting alkenes and organosulfur compounds, which extraction solvent comprises a polar organic solvent, at least one extracted alkene, and at least one extracted organosulfur compound; and b) a second phase, which second phase comprises gasoline having a reduced alkene content and a reduced organosulfur content compared to gasoline obtainable by a fluid catalytic cracking process.

39. A composition according to claim 38, wherein the extraction solvent comprises methanol or ethanol, preferably methanol.

40. A composition according to claim 38 or claim 39, wherein the extraction solvent further comprises a second solvent, which second solvent is a protic polar organic solvent.

41. A composition according to claim 40, wherein the second solvent is ethylene glycol or propylene glycol, preferably ethylene glycol.

42. A composition according to claim 41, wherein the extraction solvent is as defined in any one of claims 7 to 21.

43. A composition according to any one of claims 38 to 42, wherein the first phase comprises one or more alkene compounds in an amount of greater than equal to 2 wt%, wherein the percentage by weight is relative to the total weight of the second phase.

44. An apparatus for producing gasoline having a reduced alkene content and a reduced organosulfur content, wherein the apparatus comprises:

a) a first reservoir comprising gasoline obtainable by a fluid catalytic cracking process, which gasoline comprises at least one alkene and at least one organosulfur compound;

b) a second reservoir comprising an extraction solvent, which extraction solvent is suitable for extracting alkenes and organosulfur compounds, and which extraction solvent comprises a polar organic solvent; and

c) a reactor which is connected in fluid communication with the first and second reservoirs.

45. An apparatus according to claim 44, wherein the reactor contains at least some of the gasoline obtainable by a fluid catalytic cracking process and at least some of the extraction solvent.

46. An apparatus according to claim 44 or claim 45, wherein the gasoline obtainable by a fluid catalytic cracking process is as defined in claim 25 or 26, or wherein the extraction solvent is as defined in any one of claims 7 to 21.

47. An apparatus according to any one of claims 44 to 46, wherein the reactor comprises i) a first phase comprising said extraction solvent, at least one extracted alkene, and at least one extracted organosulfur compound, and

ii) a second phase comprising gasoline having a reduced alkene content and a reduced organosulfur content compared to said gasoline obtainable by a fluid catalytic cracking process.

48. Use of an extraction solvent for extracting at least one alkene and at least one organosulfur compound from gasoline obtainable by a fluid catalytic cracking process, which extraction solvent comprises a polar organic solvent.

49. Use according to claim 48, wherein the extraction solvent is as defined in any one of claims 7 to 21.

50. Use according to claim 49, wherein extracting at least one alkene and at least one organosulfur compound from gasoline obtainable by a fluid catalytic cracking process comprises:

contacting gasoline obtainable by a fluid catalytic cracking process, which gasoline comprises at least one alkene and at least one organosulfur compound, with an extraction solvent suitable for extracting alkenes and organosulfur compounds, which extraction solvent comprises a polar organic solvent,

and thereby forming

i) a first phase comprising said extraction solvent, at least one extracted alkene, and at least one extracted organosulfur compound, and

ii) a second phase comprising gasoline having a reduced alkene content and a reduced organosulfur content compared to said gasoline obtainable by a fluid catalytic cracking process.

51. Use according to claim 50, wherein said contacting gasoline obtainable by a fluid catalytic cracking process, which gasoline comprises at least one alkene and at least one organosulfur compound, with an extraction solvent suitable for extracting alkenes and organosulfur compounds which comprises a polar organic solvent is as defined in any one claims 1 to 32.