Process for manufacture of liquid fuel components from renewable sources

Patent metadata

Field	Value
Publication number	US-10501693-B2
Application number	US-201213646250-A
Country	US
Kind code	B2
Filing date	Oct 5, 2012
Priority date	Oct 7, 2011
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

A method for producing liquid fuel components from renewable oil. A fresh feedstock including saturated fatty acids is subjected to dilution by an organic lipophilic solvent. The solvent has a low phosphorus and metal impurity content, less than 5 ppm and less than 10 ppm, respectively. Dilution is performed before and/or during purification by at least one pretreatment process for removal of phosphorus and metal impurities. Subsequently, the resulting purified feedstock is fed into at least one post-treatment process suitable for producing liquid fuel components.

First claim

What is claimed is:

1. A method for producing liquid fuel components from renewable oil, the method comprising:
subjecting a fresh feedstock of renewable oil comprising saturated fatty acids to dilution with an organic lipophilic solvent containing less than 5 ppm phosphorus impurities and less than 10 ppm metal impurities, wherein the organic lipophilic solvent consists essentially of a mixture of iso-paraffins with a carbon chain length of C14 to C18, wherein the fresh feedstock is subjected to the dilution before and/or during purification of the fresh feedstock by at least one pretreatment process for removal of phosphorus and metal impurities and for forming a purified feedstock, wherein the pretreatment process comprises a degumming process,
wherein the fresh feedstock is subjected to the dilution before and/or during the degumming process, and
subsequently feeding the purified feedstock into at least one post-treatment process for producing liquid fuel components,
wherein a volume ratio of the organic lipophilic solvent to the fresh feedstock is within a range of from 0.1:1 to 2:1, and
wherein the purified feedstock contains less than 5 ppm phosphorus impurities and less than 10 ppm metal impurities, wherein the metal impurities comprise Fe, Na, Ca, and Mg.

2. The method according to claim 1 , wherein the purified feedstock is centrifuged to remove a gum formed from the degumming process.

3. The method according to claim 1 , wherein the post-treatment process comprises a hydrotreating step and an isomerization step.

4. The method according to claim 3 , wherein the post-treatment process comprises conducting the hydrotreating step including hydrogenation and deoxygenation, and subsequently conducting the isomerization step.

5. The method according to claim 1 , wherein the renewable oil includes an animal oil or fat, a plant oil or fat, a microscopic plant oil or fat, a microbe oil or fat, or a combination thereof.

6. The method according to claim 1 , wherein the fresh feedstock of renewable oil comprising saturated fatty acids has an iodine value of less than 100.

7. The method according to claim 1 , wherein the post-treatment process comprises a hydrotreating step and an isomerization step, wherein a vapor phase formed during the hydrotreating step is removed before conducting the isomerization step.

8. The method according to claim 1 , wherein the fresh feedstock of renewable oil comprising saturated fatty acids has an iodine value of less than 75.

9. The method according to claim 1 , wherein the fresh feedstock of renewable oil comprising saturated fatty acids has an iodine value of less than 60.

10. The method according to claim 1 , wherein the volume ratio of the organic lipophilic solvent to the fresh feedstock is within a range of from 0.2:1 to 1:1.

11. The method according to claim 1 , wherein the organic lipophilic solvent contains less than 5 ppm metal impurities.

12. The method according to claim 1 , wherein the pretreatment process further comprises a bleaching process, a centrifugation process, a filtering process, or a combination thereof.

13. The method according to claim 1 , wherein the dilution is conducted prior to the pretreatment process.

14. The method according to claim 1 , wherein the pretreatment process consists of the degumming process and optionally a centrifugation process.

15. The method according to claim 13 , wherein the pretreatment process consists of the degumming process and optionally a centrifugation process.

16. The method according to claim 15 , wherein the post-treatment process comprises a hydrotreating step and an isomerization step.

17. The method according to claim 1 , wherein a weight ratio of the organic lipophilic solvent to the fresh feedstock is 1:9 to 1:1.5.

18. The method according to claim 1 , wherein a weight ratio of the organic lipophilic solvent to the fresh feedstock is 1:9 to 1:4.

19. A method for producing liquid fuel components from renewable oil, the method comprising:
subjecting a fresh feedstock of renewable oil comprising saturated fatty acids to dilution with an organic lipophilic solvent containing less than 5 ppm phosphorus impurities and less than 10 ppm metal impurities, wherein the organic lipophilic solvent consists essentially of a mixture of iso-paraffins with a carbon chain length of C14 to C18, wherein the fresh feedstock is subjected to the dilution before purification of the fresh feedstock by at least one pretreatment process for removal of phosphorus and metal impurities and for forming a purified feedstock, wherein the pretreatment process comprises a degumming process, wherein the fresh feedstock is subjected to the dilution before the degumming process, and
subsequently feeding the purified feedstock into at least one post-treatment process for producing liquid fuel components,
wherein a volume ratio of the organic lipophilic solvent to the fresh feedstock is within a range of from 0.1:1 to 2:1.

20. A method for producing liquid fuel components from renewable oil, the method comprising:
subjecting a fresh feedstock of renewable oil comprising saturated fatty acids to dilution with an organic lipophilic solvent containing less than 5 ppm phosphorus impurities and less than 10 ppm metal impurities, wherein the organic lipophilic solvent consists essentially of a mixture of iso-paraffins with a carbon chain length of C14 to C18, wherein the fresh feedstock is subjected to the dilution during purification of the fresh feedstock by at least one pretreatment process for removal of phosphorus and metal impurities and for forming a purified feedstock, wherein the pretreatment process comprises a degumming process, wherein the fresh feedstock is subjected to the dilution during the degumming process, and
subsequently feeding the purified feedstock into at least one post-treatment process for producing liquid fuel components,
wherein a volume ratio of the organic lipophilic solvent to the fresh feedstock is within a range of from 0.1:1 to 2:1, and
wherein the purified feedstock contains less than 5 ppm phosphorus impurities and less than 10 ppm metal impurities, wherein the metal impurities comprise Fe, Na, Ca, and Mg.

21. A method for producing liquid fuel components from renewable oil, the method comprising:
subjecting a fresh feedstock of renewable oil comprising saturated fatty acids to dilution with an organic lipophilic solvent wherein the organic lipophilic solvent consists essentially of a mixture of iso-paraffins with a carbon chain length of C14 to C18, containing less than 5 ppm phosphorus impurities and less than 10 ppm metal impurities, wherein the fresh feedstock is subjected to the dilution before and during purification of the fresh feedstock by at least one pretreatment process for removal of phosphorus and metal impurities and for forming a purified feedstock, wherein the pretreatment process comprises a degumming process, wherein the fresh feedstock is subjected to the dilution before and during the degumming process, and
subsequently feeding the purified feedstock into at least one post-treatment process for producing liquid fuel components,
wherein a volume ratio of the organic lipophilic solvent to the fresh feedstock is within a range of from 0.1:1 to 2:1, and
wherein the purified feedstock contains less than 5 ppm phosphorus impurities and less than 10 ppm metal impurities, wherein the metal impurities comprise Fe, Na, Ca, and Mg.

22. The method according to claim 1 , w

Assignees

• Neste Oil Oyj
• Neste Oyj

Inventors

• Laakkonen Marko
• Myllyoja Jukka
• Toukoniitty Blanka
• Hujanen Mervi
• Saastamoinen Ari
• Toivo Alpo

Classifications

• C11C3/00

  Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom (sulfonated fats or oils C07C309/62; factice C08H; drying oils C09F) · CPC title

• C10G2300/1018

  of animal origin · CPC title

• C10G2400/04

  Diesel oil · CPC title

• C10G3/00 Primary

  Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids (production from non-melting solid oxygen-containing carbonaceous materials C10G1/00) · CPC title

• Y02P30/20

  using bio-feedstock · CPC title