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US4587007A
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Process for visbreaking resids in the presence of hydrogen-donor materials and organic sulfur compounds
Assignee: Mobil Oil AS
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Filing: 1985-08-12
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Granted: 1986-05-06
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Expires: 2005-08-12
Abstract
Abstract A visbreaking process for the conversion of heavy residual petroleum charge stocks is provided in which an organic sulfur compound containing a thiol sulfur is added to said petroleum charge stock and the visbreaking reaction is carried out at increased severities in the presence of highly aromatic petroleum refinery hydrogen-donor materials which are characterized by an HAr proton content between about 20 and 50 percent and an H alpha proton content of at least about 20 percent. Typcial hydrogen-donor materials include FCC main column bottoms, clarified slurry oil and light cycle oil.
Inventors
- 👤 Leslie R. Rudnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:45
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/007; C10G47/00; C10G47/32; C10G47/34
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
74 words
A method for visbreaking a heavy petroleum residual oil comprising: (a) adding to said residual oil an organic sulfur compound having an active thiol component; and (b) visbreaking said oil in the presence of a highly aromatic hydrogen donor material characterized by its hydrogen content distribution wherein H Ar and H.sub.α are each at least about 20 percent of the total hydrogen-donor hydrogen content, and thereafter recovering a fuel oil product having reduced viscosity.
Claim 2
Independent Claim
74 words
A method for visbreaking a heavy petroleum residual oil comprising: (a) adding to said residual oil an organic sulfur compound having an active thiol component; and (b) visbreaking said oil in the presence of a highly aromatic hydrogen donor material characterized by its hydrogen content distribution wherein H Ar and H.sub.α are each at least about 20 percent of the total hydrogen-donor hydrogen content, and thereafter recovering a fuel oil product having reduced viscosity.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein the H Ar proton content is between 20 and 50 percent and the H.sub.α proton content is between about 20 and 50 percent.
Claim 4
Dependent Claim
29 words
The method of claim 2 wherein the hydrogen donor solvent has H.sub.α content of at least 1.9 wt. % and H Ar content of at least 2.0 wt. %.
Claim 5
Dependent Claim
15 words
The method of claim 2 wherein the hydrogen-donor material is an FCC main column bottoms.
Claim 6
Dependent Claim
14 words
The method of claim 2 wherein the hydrogen-donor material is a clarified slurry oil.
Claim 7
Dependent Claim
14 words
The method of claim 2 wherein the hydrogen-donor material is a TCC syntower bottoms.
Claim 8
Dependent Claim
14 words
The method of claim 2 wherein the hydrogen-donor material is a light cycle oil.
Claim 9
Dependent Claim
48 words
The method of claim 2 wherein visbreaking is carried out at temperatures ranging from 350° to 485° C., at a hydrogen donor solvent concentration level ranging from 0.1 to 50 wt. % based on the total visbreaking feed, the feed residence time ranging from 1 to 60 minutes.
Claim 10
Dependent Claim
20 words
The method of claim 1 wherein said organic compound is selected from the group consisting of thiophenol, dodecanethiol and benzothiophene.
Claim 11
Dependent Claim
16 words
A method according to claim 1 which is carried out in the absence of free hydrogen.
Claim 12
Independent Claim
82 words
A method for visbreaking a heavy petroleum residual oil comprising: (a) adding to said residual oil a hydrocarbon stream derived from the refining of petroleum and containing sulfur compounds having a thiol functionality; and (b) visbreaking said oil in the presence of a highly aromatic hydrogen donor material characterized by its hydrogen content distribution wherein H Ar and H.sub.α are each at least about 20 percent of the total hydrogen-donor hydrogen content, and thereafter recovering a fuel oil product having reduced viscosity.
Claim 13
Independent Claim
82 words
A method for visbreaking a heavy petroleum residual oil comprising: (a) adding to said residual oil a hydrocarbon stream derived from the refining of petroleum and containing sulfur compounds having a thiol functionality; and (b) visbreaking said oil in the presence of a highly aromatic hydrogen donor material characterized by its hydrogen content distribution wherein H Ar and H.sub.α are each at least about 20 percent of the total hydrogen-donor hydrogen content, and thereafter recovering a fuel oil product having reduced viscosity.
Claim 14
Dependent Claim
29 words
The method of claim 11 wherein the H Ar proton content is between 20 and 50 percent and the H.sub.α proton content is between about 20 and 50 percent.
Claim 15
Dependent Claim
30 words
The method of claim 12 wherein the hydrogen donor solvent has an H.sub.α content of at least 1.9 wt. % and H Ar content of at least 2.0 wt. %.
Claim 16
Dependent Claim
15 words
The method of claim 12 wherein the hydrogen-donor material is an FCC main column bottoms.
Claim 17
Dependent Claim
14 words
The method of claim 12 wherein the hydrogen-donor material is a clarified slurry oil.
Claim 18
Dependent Claim
14 words
The method of claim 12 wherein the hydrogen-donor material is a TCC syntower bottoms.
Claim 19
Dependent Claim
14 words
The method of claim 12 wherein the hydrogen-donor material is a light cycle oil.
Claim 20
Dependent Claim
55 words
The method of claim 12 wherein visbreaking is carried out at temperatures ranging from 350° to 485° C., at a hydrogen solvent concentration level ranging from 0.1 to 50 wt. % preferably ranging from 0.1 to 20 wt. % based on the total visbreaking feed, the feed residence time ranging from 1 to 60 minutes.
Claim 21
Dependent Claim
16 words
A method according to claim 11 which is carried out in the absence of free hydrogen.
Claim 22
Independent Claim
131 words
A method for visbreaking a heavy petroleum residual oil comprising: (a) sulfonating an extract of aromatic compounds derived from the extraction of paraffinic lubricating oil stock by contacting said aromatics with sulfuric acid; and recovering a mixture of sulfonated aromatic organic compounds; (b) hydrogenating said mixture by contacting it with hydrogen and recovering a mixture of aromatic compounds having a thiol group thereon; (c) adding to said residual oil the mixture of aromatic organic compounds of (b) having an active thiol component, and (d) visbreaking said oil in the presence of a highly aromatic hydrogen donor material characterized by its hydrogen content distribution wherein H Ar and H.sub.α are each at least about 20 percent of the total hydrogen-donor hydrogen content, and thereafter recovering a fuel oil product having reduced viscosity.
Claim 23
Independent Claim
131 words
A method for visbreaking a heavy petroleum residual oil comprising: (a) sulfonating an extract of aromatic compounds derived from the extraction of paraffinic lubricating oil stock by contacting said aromatics with sulfuric acid; and recovering a mixture of sulfonated aromatic organic compounds; (b) hydrogenating said mixture by contacting it with hydrogen and recovering a mixture of aromatic compounds having a thiol group thereon; (c) adding to said residual oil the mixture of aromatic organic compounds of (b) having an active thiol component, and (d) visbreaking said oil in the presence of a highly aromatic hydrogen donor material characterized by its hydrogen content distribution wherein H Ar and H.sub.α are each at least about 20 percent of the total hydrogen-donor hydrogen content, and thereafter recovering a fuel oil product having reduced viscosity.
Claim 24
Dependent Claim
28 words
The method of claim 20 wherein the H Ar proton content is between 20 and 50 percent and the H.sub.α proton content is between 20 and 50 percent.
Claim 25
Dependent Claim
30 words
The method of claim 21 wherein the hydrogen donor solvent has an H.sub.α content of at least 1.9 wt. % and H Ar content of at last 2.0 wt. %.
Claim 26
Dependent Claim
15 words
The method of claim 21 wherein the hydrogen-donor material is an FCC main column bottoms.
Claim 27
Dependent Claim
15 words
The method of claim 21 wherein the hydrogen donor material is a clarified slurry oil.
Claim 28
Dependent Claim
14 words
The method of claim 21 wherein the hydrogen-donor material is a TCC syntower bottoms.
Claim 29
Dependent Claim
14 words
The method of claim 21 wherein the hydrogen-donor material is a light cycle oil.
Claim 30
Dependent Claim
48 words
The method of claim 21 wherein visbreaking is carried out at temperatures ranging from 350° to 485° C., at a hydrogen donor solvent concentration level ranging from 0.1 to 50 wt. % based on the total visbreaking feed, the feed residence times ranging from 1 to 60 minutes.
Claim 31
Dependent Claim
16 words
A method according to claim 20 which is carried out in the absence of free hydrogen.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |