Low sulfur marine bunker fuels and methods of making same

Patent metadata

Field	Value
Publication number	US-10501699-B2
Application number	US-201815888227-A
Country	US
Kind code	B2
Filing date	Feb 5, 2018
Priority date	Dec 4, 2014
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

This invention relates to low sulfur marine bunker fuel compositions and methods of making the same. The invention also relates to an uncracked, hydrotreated vacuum resid for use in making the low sulfur marine bunker fuel composition. Contrary to conventional marine/bunker fuel compositions, the low sulfur marine/bunker fuel composition uses mostly uncracked components, including a (cat feed) hydrotreated vacuum resid. The low sulfur marine/bunker fuel composition can also have reduced contents of residual components.

First claim

What is claimed is:

1. A low sulfur bunker fuel composition comprising:
about 50 vol % to about 100 vol % of an uncracked, hydrotreated vacuum resid having at most about 1500 wppm sulfur and a kinematic viscosity of at least about 350 cSt at 50° C.;
up to about 40 vol % of a first diesel boiling range hydrocarbon stream;
and up to about 50 vol % of a second diesel boiling range hydrocarbon stream,
wherein the first diesel boiling range hydrocarbon stream has from about 15 to about 30 wppm sulfur, and the second diesel boiling range hydrocarbon stream has from about 2 to about 10 wppm sulfur, and
wherein the fuel composition has one or more properties selected from the group consisting of: (1) a kinematic viscosity of about 20 cSt to about 350 cSt at 50° C.; (2) a density of about 800 kg/m 3 to 1000 kg/m 3 at 15° C.; (3) and a pour point of 25° C. to 35° C.

2. The fuel composition of claim 1 , wherein the composition has a kinematic viscosity of about 380 cSt at 50° C.

3. The fuel composition of claim 1 , wherein the composition has a total metal content of no more than 6 mg/kg.

4. The fuel composition of claim 1 , wherein the composition has a total metal content of no less than 3 mg/kg.

5. The fuel composition of claim 1 , wherein the composition has less than 1200 wppm sulfur.

6. The fuel composition of claim 5 , wherein the composition has less than 1000 wppm sulfur.

7. The fuel composition of claim 6 , wherein the composition has less than 900 wppm sulfur.

8. The fuel composition of claim 7 , wherein the composition has less than 850 wppm sulfur.

9. The fuel composition of claim 8 , wherein the composition has less than 800 wppm sulfur.

10. The fuel composition of claim 9 , wherein the composition has less than 500 wppm sulfur.

11. The fuel composition of claim 1 , wherein the composition has at least 500 wppm sulfur.

12. The fuel composition of claim 1 , comprising no more than about 25 vol % of the second diesel boiling range hydrocarbon stream.

13. The fuel composition of claim 12 , comprising no more than about 20 vol % of the second diesel boiling range hydrocarbon stream.

14. The fuel composition of claim 13 , comprising no more than about 15 vol % of the second diesel boiling range hydrocarbon stream.

15. The fuel composition of claim 14 , comprising no more than about 10 vol % of the second diesel boiling range hydrocarbon stream.

16. The fuel composition of claim 1 , comprising no more than about 7.5 vol % of the first diesel boiling range hydrocarbon stream.

17. The fuel composition of claim 16 , comprising no more than about 5 vol % of the first diesel boiling range hydrocarbon stream.

18. The fuel composition of claim 1 , wherein the uncracked, hydrotreated vacuum resid provides no less than 60 vol % of the composition.

19. The fuel composition of claim 18 , wherein the uncracked, hydrotreated vacuum resid provides no less than 65 vol % of the composition.

20. The fuel composition of claim 19 , wherein the uncracked, hydrotreated vacuum resid provides no less than 70 vol % of the composition.

21. The fuel composition of claim 20 , wherein the uncracked, hydrotreated vacuum resid provides no less than 80 vol % of the composition.

22. The fuel composition of claim 21 , wherein the uncracked, hydrotreated vacuum resid provides no less than 90 vol % of the composition.

23. An uncracked hydrotreated vacuum resid comprising a T50 of at least 600° C. and no more than about 1500 wppm sulfur.

24. The uncracked hydrotreated vacuum resid of claim 23 , having no more than about 1300 wppm sulfur.

25. The uncracked hydrotreated vacuum resid of claim 24 , having no more than about 1200 wppm sulfur.

26. The uncracked hydrotreated vacuum resid of claim 25 , having no more than about 1000 wppm sulfur.

27. The uncracked hydrotreated vacuum resid of claim 26 , having no more than about 800 wppm sulfur.

28. The uncracked hydrotreated vacuum resid of claim 27 , having no more than about 500 wppm sulfur.

29. The uncracked hydrotreated vacuum resid of claim 23 , having at least about 500 wppm sulfur.

30. The uncracked hydrotreated vacuum resid of claim 23 , having a total metal content of no more than 6 mg/kg wppm.

31. The uncracked hydrotreated vacuum resid of claim 23 , having a total metal content of no less than 3 mg/kg wppm.

32. The uncracked hydrotreated vacuum resid of claim 23 , having no more than about 6000 mg/kg nitrogen.

Assignees

• Exxonmobil Res & Eng Co

Inventors

• Robinson Christopher E
• Dawe Sara
• Karlsson Erik
• Grati Hédi

Classifications

• C10G45/08

  in combination with chromium, molybdenum, or tungsten metals, or compounds thereof · CPC title

• C10L1/04 Primary

  essentially based on blends of hydrocarbons · CPC title

• C10L2270/00

  Specifically adapted fuels · CPC title

• C10L2230/081

  Anti-oxidants · CPC title

• C10L2290/24

  Mixing, stirring of fuel components · CPC title