Systems for producing anode grade coke from high sulfur crude oils

Patent metadata

Field	Value
Publication number	US-2017335199-A1
Application number	US-201715603224-A
Country	US
Kind code	A1
Filing date	May 23, 2017
Priority date	May 23, 2016
Publication date	Nov 23, 2017
Grant date	—

Abstract

Methods and systems for producing anode grade coke are disclosed, which allow anode grade coke to be produced from crude oil having a high sulfur content. A fraction of the resid is hydrotreated while another fraction of the resid is treated in a solvent deasphalting unit. A synthetic stream is provided by blending hydrotreated resid with one or more streams from the deasphalting unit. The synthetic stream is fed to an anodic coker unit.

First claim

What is claimed is:

1 . A system for producing anode grade coke comprising:
a vacuum distillation tower, a hydroprocessing unit; a solvent deasphalting unit; and an anode coker; wherein feed to the anode coker comprises bottoms from the vacuum distillation tower, hydrotreated resid from the hydroprocessing unit, and a stream from the deasphalting unit.

2 . The system of claim 1 , wherein feed to the solvent deasphalting unit comprises bottoms from the vacuum distillation tower.

3 . The system of claim 1 , further comprising an atmospheric distillation tower.

4 . The system of claim 3 , wherein feed to the hydroprocessing unit comprises bottoms from the atmospheric distillation tower.

5 . The system of claim 3 , wherein feed to the solvent deasphalting unit comprises bottoms from the atmospheric distillation tower.

6 . The system of claim 1 , wherein the solvent deasphalting unit comprises a residuum oil supercritical extraction process.

7 . The system of claim 1 , wherein the stream from the deasphalting unit comprises a resins stream.

8 . The system of claim I, wherein the stream from the deasphalting unit comprises a deasphalted oil stream.

9 . The system of claim 1 , wherein the stream from the deasphalting unit comprises two or more of a deasphalted oil stream, a resins stream, and an asphaltene stream.

10 . The system of claim 1 , wherein the anode coker is configured to produce anode grade coke.

11 . The system of claim 1 , wherein the anode coker is configured to produce coke comprising less than 3 wt. % sulfur.

12 . A method for producing anode grade coke, comprising:
blending a synthetic feed stream, the synthetic stream comprising hydrotreated resid and one or more streams from a solvent deasphalting unit, and providing the synthetic feed stream to a coker unit.

13 . The method of claim 12 , wherein the hydrotreated resid comprises hydrotreated atmospheric distillation tower bottoms.

14 . The method of claim 12 , wherein the one or more streams from a solvent deasphalting unit comprises one or more resin streams.

15 . The method of claim 12 , wherein the one or more streams from a solvent deasphalting unit comprises deasphalted oil.

16 . The method of claim 12 , wherein the one or more streams from a solvent deasphalting unit comprises asphaltene.

17 . The method of claim 12 , wherein the one or more streams from a solvent deasphalting unit comprises at least of deasphalted oil, resins, and asphaltene.

18 . The method of claim 12 , wherein the synthetic stream further comprises vacuum distillation tower bottoms.

19 . The method of claim 12 , wherein the anode anode grade coke comprises less than 3 wt. % sulfur.

20 . The method of claim 12 , wherein the solvent deasphalting unit comprises a residuum oil supercritical extraction process.

Assignees

• Kellogg Brown & Root Llc

Inventors

• Iqbal Rashid

Classifications

• C10B55/00 Primary

  Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material (cracking oils C10G) · CPC title

• C10B3/00

  Coke ovens with vertical chambers · CPC title

• C10G55/04

  including at least one thermal cracking step · CPC title

• C10G67/00

  Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only · CPC title

• C10G67/16

  plural parallel stages only · CPC title