Hydroprocessing of deasphalted catalytic slurry oil

Patent metadata

Field	Value
Publication number	US-10752849-B2
Application number	US-201815928423-A
Country	US
Kind code	B2
Filing date	Mar 22, 2018
Priority date	Apr 7, 2017
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

Systems and methods are provided for upgrading catalytic slurry oil. The upgrading can be performed by deasphalting the catalytic slurry oil to form a deasphalted oil and a residual or rock fraction. The deasphalted oil can then be hydroprocessed to form an upgraded effluent that includes fuels boiling range products.

First claim

The invention claimed is:

1. A method for processing a product fraction from a fluid catalytic cracking process, comprising:
performing solvent deasphalting on a feed comprising a catalytic slurry oil, wherein the feed comprises a micro carbon residue (MCR) content of at least 10 wt %, to form a deasphalted oil and a deasphalter rock fraction, wherein a ratio of the combined MCR content in the deasphalted oil and deasphalter rock fraction to the MCR content of the feed being about 0.8 or less, a yield of the deasphalted oil being about 50 wt % or more relative to a weight of the feed; and
exposing at least a portion of the deasphalted oil to a hydroprocessing catalyst under effective hydroprocessing conditions to form a hydroprocessed effluent.

2. The method of claim 1 , wherein the deasphalter rock fraction comprises a hydrogen content of about 5.7 wt % or less.

3. The method of claim 1 , wherein the catalytic slurry oil comprises a 343° C.+ bottoms fraction from a fluid catalytic cracking process.

4. The method of claim 1 , wherein the feed comprises at least 25 wppm of catalyst fines, the at least a portion of the deasphalted oil comprising 1 wppm or less of catalyst fines.

5. The method of claim 1 , wherein the deasphalter rock fraction comprises at least 100 wppm of catalyst fines.

6. The method of claim 1 , wherein the catalytic slurry oil comprises a density of about 1.02 g/cc or more, about 2 wt % n-heptane insolubles or more, or a combination thereof.

7. The method of claim 1 , wherein the feed comprises at least 1.0 wt % of organic sulfur, the hydroprocessed effluent comprising about 0.5 wt % or less of organic sulfur.

8. The method of claim 1 , wherein the feed comprises an MCR content of about 50 wt % or more.

9. The method of claim 1 , wherein the hydroprocessed effluent comprises 10 wt % or less of naphtha boiling range compounds; or wherein the hydroprocessed effluent comprises 5 wt % or less of C 4− compounds; or a combination thereof.

10. The method of claim 1 , wherein the effective hydroprocessing conditions comprise effective hydrotreating conditions, effective hydrocracking conditions, effective demetallization conditions, or a combination thereof.

11. The method of claim 1 , wherein the hydroprocessed effluent comprises about 50 wt % or more of diesel boiling range compounds.

12. The method of claim 1 , wherein performing solvent deasphalting comprises performing solvent deasphalting with a C 5+ deasphalting solvent.

13. The method of claim 1 , further comprising passing at least a portion of the deasphalter rock fraction into a coker under effective coking conditions.

14. A method for processing a product fraction from a fluid catalytic cracking process, comprising:
performing solvent deasphalting on a feed comprising a catalytic slurry oil to form a deasphalted oil and a deasphalter rock fraction, a yield of the deasphalted oil being about 50 wt % or more relative to a weight of the feed, wherein a difference between S BN and I N for the feed is about 60 or less, and a difference between S BN and I N for the deasphalted oil is 60 or more; and
exposing at least a portion of the deasphalted oil to a hydroprocessing catalyst under effective hydroprocessing conditions to form a hydroprocessed effluent.

15. The method of claim 14 , wherein the hydroprocessed effluent comprises about 50 wt % or more of diesel boiling range compounds.

16. The method of claim 14 , wherein the catalytic slurry oil comprises a density of about 1.02 g/cc or more, about 2 wt % n-heptane insolubles or more, or a combination thereof.

17. The method of claim 14 , wherein the deasphalter rock fraction comprises a hydrogen content of about 5.7 wt % or less.

18. A method for processing a product fraction from a fluid catalytic cracking process, comprising:
performing solvent deasphalting on a feed comprising a catalytic slurry oil to form a deasphalted oil and a deasphalter rock fraction, a yield of the deasphalted oil being about 50 wt % or more relative to a weight of the feed, and wherein a difference between S BN and I N for the deasphalted oil is at least 10 greater than a difference between S BN and I N for the feed; and
exposing at least a portion of the deasphalted oil to a hydroprocessing catalyst under effective hydroprocessing conditions to form a hydroprocessed effluent.

19. The method of claim 18 , wherein the hydroprocessed effluent comprises about 50 wt % or more of diesel boiling range compounds.

20. The method of claim 18 , wherein the catalytic slurry oil comprises a density of about 1.02 g/cc or more, about 2 wt % n-heptane insolubles or more, or a combination thereof.

Assignees

• Exxonmobil Res & Eng Co
• Exxonmobil Res & Engineering Company

Inventors

• Brown Stephen H
• Cunningham Brian A
• Smiley Randolph J
• Ilias Samia
• Aldous Keith K
• Green Sara K
• Hanks Patrick L
• Fruchey Kendall S

Classifications

• C10G67/049

  The hydrotreatment being a hydrocracking · CPC title

• C10G67/0463

  The hydrotreatment being a hydrorefining · CPC title

• C10G21/003

  Solvent de-asphalting · CPC title

• C10B57/045

  containing mineral oils, bitumen, tar or the like or mixtures thereof · CPC title

• C10G67/0454 Primary

  Solvent desasphalting · CPC title