US3816301A
Expired / Lapsed
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Process for the desulfurization of hydrocarbons
Assignee: Atlantic Richfield Co
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Filing: 1972-06-30
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Granted: 1974-06-11
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Expires: 1992-06-30
Abstract
Abstract A process for reducing the sulfur content of sulfur-containing hydrocarbon material by oxidizing at least a portion of the sulfur in the sulfur-containing hydrocarbon material with an oxidant in the presence of certain catalysts, for example, a molybdenum-containing catalyst. The oxidized sulfur-containing hydrocarbon material is further processed by means of a sulfur reducing step to remove sulfur from the hydrocarbon material. A hydrocarbon material having reduced sulfur content is thereafter recovered. The preferred oxidant is tertiary butyl hydroperoxide and the oxidation may occur in the presence of a solvent, preferably tertiary butyl alcohol. The tertiary butyl alcohol, which is removed from the oxidized sulfur-containing hydrocarbon material, can be dehydrated to isobutylene and further dimerized to form diisobutylene.
Inventors
- 👤 H Sorgenti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
21 words
The process of claim 1 wherein said interacting occurs at a temperature within the range from about 25*C. to about 150*C.
Claim 2
Dependent Claim
20 words
treating said oxidized sulfur-containing hydrocarbon material to remove at least a portion of said sulfur from said hydrocarbon material; and
Claim 3
Dependent Claim
8 words
recovering a hydrocarbon material having reduced sulfur content.
Claim 4
Dependent Claim
44 words
The process of claim 2 wherein said catalyst is soluble in the liquid portion of the oxidation reaction mass and is present in an amount based on the weight of molybdenum of at least about 5 ppm. by weight of the sulfur-containing hydrocarbon material.
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein at least a major amount of said sulfur-containing hydrocarbon material boils above about 550*F.
Claim 6
Dependent Claim
20 words
The process of claim 3 wherein at least a major amount of said sulfur-containing hydrocarbon material boils above about 550*F.
Claim 7
Dependent Claim
34 words
The process of claim 5 wherein said oxidant is present in a concentration of from about 0.1 to about 10 atoms of active oxygen per atom of sulfur present in said sulfur-containing hydrocarbon material.
Claim 8
Dependent Claim
34 words
The process of claim 6 wherein said oxidant is present in a concentration of from about 1 to about 4 atoms of active oxygen per atom of sulfur present in said sulfur-containing hydrocarbon material.
Claim 9
Dependent Claim
35 words
The process of claim 6 wherein said catalyst is present in an amount based on the weight of molybdenum of from about 10 ppm. to about 500 ppm. by weight of said sulfur-containing hydrocarbon material.
Claim 10
Dependent Claim
67 words
The process of claim 8 wherein said oxidant and said peroxy compound are both tertiary butyl hydroperoxide, said saturated alcohol is tertiary butyl alcohol, and said interacting takes place in the presence of at least one primary alcohol containing from one to about 16 carbon atoms per molecule and having at least one primary hydroxy group present in an amount sufficient to enhance the solubility of molybdenum.
Claim 11
Dependent Claim
34 words
The process of claim 9 wherein said oxidant is present in a concentration of from about 1.5 to about 3.0 atoms of active oxygen per atom of sulfur present in said sulfur-containing hydrocarbon material.
Claim 12
Dependent Claim
67 words
The process of claim 10 wherein at least a portion of said tertiary butyl hydroperoxide is derived from oxidation of isobutane and said primary alcohol is a mixture of polyhydroxy alcohols which have a moleculAr weight in the range from about 200 to about 300 and contain from about four to about six hydroxy groups, said poly-hydroxy alcohols being derived from propylene epoxidation with tertiary butyl hydroperoxide.
Claim 13
Dependent Claim
12 words
A process for producing a hydrocarbon material of reduced sulfur-content which comprises:
Claim 14
Dependent Claim
21 words
The process of claim 12 wherein said interacting occurs at a temperature within the range from about 25*C. to about 150*C.
Claim 15
Dependent Claim
45 words
The process of claim 13 wherein at least a major amount of said sulfur-containing hydrocarbon material boils above about 550*F. and said oxidation occurs in the presence of an added oxidation solvent in an amount sufficient to reduce the viscosity of the oxidation reaction mass.
Claim 16
Dependent Claim
67 words
The process of claim 14 wherein said oxidation solvent is present in an amount such that from about 5 parts to about 2,000 parts by weight of solvent is present for every 100 parts of sulfur-containing hydrocarbon material and said oxidant is present in a concentration of from about 0.1 to about 10 atoms of active oxygen per atom of sulfur present in said sulfur-containing hydrocarbon material.
Claim 17
Dependent Claim
13 words
The process of claim 15 wherein said oxidation solvent is tertiary butyl alcohol.
Claim 18
Dependent Claim
68 words
The process of claim 16 wherein said oxidant and said peroxy compound are both tertiary butyl hydroperoxide and said saturated alcohol is tertiary butyl alcohol, and said interacting takes place in the presence of at least one primary alcohol containing from one to about 16 carbon atoms per molecule and having at least one primary hydroxy group present in an amount sufficient to enhance the solubility of molybdenum.
Claim 19
Dependent Claim
47 words
The process of claim 17 wherein step (2) comprises: A. separating at least a portion of said tertiary butyl alcohol contained in said oxidized sulfur-containing hydrocarbon material leaving an alcohol-poor hydrocarbon material; and B. removing at least a portion of said sulfur from said alcohol-poor hydrocarbon material.
Claim 20
Dependent Claim
67 words
The process of claim 17 wherein at least a major portion of said tertiary butyl hydroperoxide is derived from oxidation of isobutane and said primary alcohol is a mixture of poly-hydroxy alcohol which have a molecular weight in the range from about 200 to about 300 and contain from about 4 to about 6 hydroxy groups, said poly-hydroxy alcohols derived from propylene epoxidation with tertiary butyl hydroperoxide.
Claim 21
Dependent Claim
24 words
The process of claim 18 comprising the additional step of dehydrating at least a portion of said separated tertiary butyl alcohol to form isobutylene.
Claim 22
Dependent Claim
18 words
The process of claim 20 wherein at least a portion of said isobutylene is dimerized to form diisobutylene.
Claim 23
Dependent Claim
21 words
The process of claim 21 wherein said sulfur removal step comprises subjecting said alcohol-poor hydrocarbon material to a thermal treatment step.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |