Process for the preparation of a feedstock for a hydroprocessing unit

Patent metadata

Field	Value
Publication number	US-10125329-B2
Application number	US-201415120667-A
Country	US
Kind code	B2
Filing date	Dec 23, 2014
Priority date	Feb 25, 2014
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A process for preparing a feedstock for a hydroprocessing unit, the feedstock based on crude oil containing asphaltenes and the process including mixing crude oil with a predetermined solvent in a ratio such that no aggregation of asphaltenes in the mixture takes place, and feeding the combined mixture to one or more hydroprocessing units.

First claim

The invention claimed is:

1. A process for the preparation of a feedstock for a hydroprocessing unit, wherein said feedstock is based on crude oil containing asphaltenes, said process comprising the steps of:
mixing said crude oil with a solvent, wherein said solvent includes at least one of steam cracker cracked distillate (CD), steam cracker carbon black oil (CBO), low asphaltenes containing crude oil residue having a boiling point above 300° C. deg C. and aromatic rich hydrocarbons streams, wherein a mixing ratio of said solvent to said crude oil is such that no aggregation of asphaltenes in said combined mixture of solvent and crude oil takes place under mixing conditions; and
feeding said combined mixture of solvent and crude oil to one or more hydroprocessing units, wherein said combined mixture of solvent and crude oil comprises 25 wt. % or more of cracked distillate, based on the total weight of the feed blend.

2. A process for the preparation of a feedstock for a hydroprocessing unit, wherein said feedstock is based on crude oil containing asphaltenes, said process comprising the steps of:
mixing said crude oil with a solvent, wherein said solvent includes at least one of steam cracker cracked distillate (CD), steam cracker carbon black oil (CBO), low asphaltenes containing crude oil residue having a boiling point above 300° C. deg C. and aromatic rich hydrocarbons streams, wherein a mixing ratio of said solvent to said crude oil is such that no aggregation of asphaltenes in said combined mixture of solvent and crude oil takes place under mixing conditions; and
feeding said combined mixture of solvent and crude oil to one or more hydroprocessing units, wherein said combined mixture of solvent and crude oil comprises a maximum of 55 wt. % of the higher asphaltenes containing crude stream in combination with the lower asphaltenes containing crude oils and aromatic streams.

3. The process according to claim 1 , wherein said combined mixture of solvent and crude oil prior to entering the one or more hydroprocessing units, or its feed heaters, has an S value, measured as per ASTMD7157-12, of greater than 1.

4. The process according to claim 1 , wherein said crude oil is a bottom stream from a vacuum distillation unit.

5. The process according to claim 1 , further comprising deasphalting said crude oil, and separating the crude oil thus deasphalted in a stream having a low content of asphaltenes and a stream having a high content of asphaltenes, wherein said stream having a high content of asphaltenes is mixed with said solvent.

6. The process according to claim 1 , wherein said one or more hydroprocessing units are chosen from the group of a resid hydrocracking unit and a coking unit.

7. The process according to claim 2 , wherein said combined mixture of solvent and crude oil prior to entering the one or more hydroprocessing units, or its feed heaters, has an S value, measured as per ASTMD7157-12, of greater than 1.

8. The process according to claim 2 , wherein said crude oil is a bottom stream from a vacuum distillation unit.

9. The process according to claim 2 , further comprising deasphalting said crude oil, and separating the crude oil thus deasphalted in a stream having a low content of asphaltenes and a stream having a high content of asphaltenes, wherein said stream having a high content of asphaltenes is mixed with said solvent.

10. The process according to claim 2 , wherein said one or more hydroprocessing units are chosen from the group of a resid hydrocracking unit and a coking unit.

11. The process according to claim 1 , wherein said combined mixture of solvent and crude oil comprises more than 25 wt. % of low asphaltenes containing crude oil, atmospheric or vacuum residue, based on the total weight of the feed blend.

12. The process according to claim 2 , wherein said combined mixture of solvent and crude oil comprises more than 25 wt. % of low asphaltenes containing crude oil, atmospheric or vacuum residue, based on the total weight of the feed blend.

13. The process according to claim 4 , wherein said combined mixture of solvent and crude oil prior to entering the one or more hydroprocessing units, or its feed heaters, has an S value, measured as per ASTMD7157-12, of greater than 1.

14. The process according to claim 5 , wherein said crude oil is a bottom stream from a crude oil distillation unit (CDU).

15. The process according to claim 8 , further comprising deasphalting said crude oil, and separating the crude oil thus deasphalted in a stream having a low content of asphaltenes and a stream having a high content of asphaltenes, wherein said stream having a high content of asphaltenes is mixed with said solvent.

16. The process according to claim 3 , wherein said one or more hydroprocessing units are chosen from the group of a resid hydrocracking unit and a coking unit.

17. The process according to claim 9 , wherein said crude oil is a bottom stream from a vacuum distillation unit (VDU).

18. The process according to claim 17 , wherein said combined mixture of solvent and crude oil comprises more than 25 wt. % of low asphaltenes containing crude oil, atmospheric or vacuum residue, based on the total weight of the feed blend.

Assignees

• Saudi Basic Ind Corp
• Sabic Global Technologies Bv
• Sabic Global Technologies Bv

Inventors

• Oprins Arno Johannes Maria
• Housmans Thomas Hubertus Maria
• Rajagopalan Vijayanand
• Narayanaswamy Ravichander

Classifications

• C10G2300/206

  Asphaltenes · CPC title

• C10G2300/44

  Solvents · CPC title

• C10G2300/205

  Metal content · CPC title

• C10G67/049 Primary

  The hydrotreatment being a hydrocracking · CPC title

• C10G2300/301

  Boiling range · CPC title