Process for the manufacture of diesel range hydrocarbons

Patent metadata

Field	Value
Publication number	US-10800976-B2
Application number	US-201916715871-A
Country	US
Kind code	B2
Filing date	Dec 16, 2019
Priority date	Jul 5, 2005
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

The invention relates to a process for the manufacture of diesel range hydrocarbons wherein a feed is hydrotreated in a hydrotreating step and isomerised in an isomerisation step, and a feed comprising fresh feed containing more than 5 wt % of free fatty acids and at least one diluting agent is hydrotreated at a reaction temperature of 200-400° C., in a hydrotreating reactor in the presence of catalyst, and the ratio of the diluting agent/fresh feed is 5-30:1.

First claim

The invention claimed is:

1. A process for the manufacture of diesel-range branched hydrocarbons comprising the following steps:
hydrotreating a feed comprising:
(i) at least one organic or inorganic sulphur compound,
(ii) hydrogen,
(iii) a feedstock comprising bio oil and/or fat from renewable sources, and
(iv) at least one diluting agent,
in the presence of a hydrogenation catalyst to form hydrocarbons,
wherein the feed contains 50-850 w-ppm of sulphur, calculated as elemental sulphur; and

isomerizing the formed hydrocarbons in the presence of an isomerization catalyst to produce diesel-range branched hydrocarbons.

2. The process according to claim 1 , wherein the at least one sulphur compound comprises a gaseous sulphur fed in a stream with the hydrogen.

3. The process according to claim 1 , wherein the hydrogen comprises fresh hydrogen.

4. The process according to claim 1 , wherein the feedstock consists of bio oil and/or fat from renewable sources.

5. The process according to claim 4 , wherein the at least one diluting agent consists of a diluting agent of biological origin.

6. The process according to claim 5 , wherein the feed consists of:
(i) the at least one organic or inorganic sulphur compound,
(ii) the hydrogen,
(iii) the feedstock consisting of bio oil and/or fat from renewable sources, and
(iv) the diluting agent of biological origin.

7. The process according to claim 1 , wherein the feedstock comprises a pretreated bio oil and/or fat.

8. The process according to claim 7 , wherein the feedstock comprises a purified or prehydrogenated bio oil and/or fat.

9. The process according to claim 1 , wherein the diluting agent comprises a recycled product from the isomerization step.

10. The process according to claim 1 , wherein the diluting agent comprises a recycled product from the hydrotreatment step.

11. A process for the manufacture of diesel-range branched hydrocarbons comprising the following steps:
hydrotreating a feed comprising:
(i) at least one organic or inorganic sulphur compound,
(ii) hydrogen,
(iii) a feedstock comprising bio oil and/or fat from renewable sources, and
(iv) at least one diluting agent,
in the presence of a hydrogenation catalyst to form hydrocarbons,
wherein the feed contains up to 570 w-ppm of sulphur, calculated as elemental sulphur; and

isomerizing the formed hydrocarbons in the presence of an isomerization catalyst to produce diesel-range branched hydrocarbons.

12. The process according to claim 11 , wherein the at least one sulphur compound comprises a gaseous sulphur fed in a stream with the hydrogen.

13. The process according to claim 11 , wherein the hydrogen comprises fresh hydrogen.

14. The process according to claim 11 , wherein the feedstock consists of bio oil and/or fat from renewable sources.

15. The process according to claim 14 , wherein the at least one diluting agent consists of a diluting agent of biological origin.

16. The process according to claim 15 , wherein the feed consists of:
(i) the at least one organic or inorganic sulphur compound,
(ii) the hydrogen,
(iii) the feedstock consisting of bio oil and/or fat from renewable sources, and
(iv) the diluting agent of biological origin.

17. The process according to claim 11 , wherein the feedstock comprises a pretreated bio oil and/or fat.

18. The process according to claim 17 , wherein the feedstock comprises a purified or prehydrogenated bio oil and/or fat.

19. The process according to claim 11 , wherein the diluting agent comprises a recycled product from the isomerization step.

20. The process according to claim 11 , wherein the diluting agent comprises a recycled product from the hydrotreatment step.

Assignees

• Neste Oyj

Inventors

• Myllyoja Jukka
• Aalto Pekka
• Savolainen Pekka
• Purola Veli-Matti
• Alopaeus Ville
• Gronqvist Johan

Classifications

• C10G3/42

  Catalytic treatment · CPC title

• C07C5/2775

  with crystalline alumino-silicates, e.g. molecular sieves · CPC title

• C10G45/02

  to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing · CPC title

• C07C1/24

  by elimination of water · CPC title

• C07C5/27

  Rearrangement of carbon atoms in the hydrocarbon skeleton · CPC title