US4003827A
Expired / Lapsed
US
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Mercaptan conversion process for a petroleum distillate charge stock
Assignee: Honeywell UOP LLC
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Filing: 1975-06-12
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Granted: 1977-01-18
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Expires: 1995-06-12
Abstract
Abstract A process is disclosed for the conversion of a petroleum distillate charge stock containing mercaptan, olefinic and dienic compounds comprising the treatment of said petroleum distillate in an atmosphere of an oxygen-containing gas in a medium possessing a pH of from about a pH of 8 to about a pH of 14 in the presence of a catalyst comprising a 4,4',4'',4'''-cobalt phthalocyanine tetrasulfonate.
Inventors
- 👤 David H. J. Carlson
- 👤 Peter Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:59
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
A process for the substantially complete conversion of mercaptan compounds to disulfide compounds in a petroleum distillate which comprises treatment of said distillate at a temperature of from about 15° C. to about 300° C. and a pressure of from about 1 atmosphere to about 100 atmospheres in an oxygen containing atmosphere and a medium possessing a pH of from about 8 to 14 in the presence of a catalyst consisting essentially of 4,4' ,4" ,4' "-cobalt phthalocyanine tetrasulfonate.
Claim 2
Dependent Claim
79 words
A process for the substantially complete conversion of mercaptan compounds to disulfide compounds in a petroleum distillate which comprises treatment of said distillate at a temperature of from about 15° C. to about 300° C. and a pressure of from about 1 atmosphere to about 100 atmospheres in an oxygen containing atmosphere and a medium possessing a pH of from about 8 to 14 in the presence of a catalyst consisting essentially of 4,4' ,4" ,4' "-cobalt phthalocyanine tetrasulfonate.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the mercaptan-containing compounds comprise aromatic mercaptans.
Claim 4
Dependent Claim
11 words
The process of claim 2 wherein the aromatic mercaptans are thiophenols.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein the treatment is effected in the presence of a fixed bed system.
Claim 6
Dependent Claim
17 words
The process of claim 4 wherein the fixed bed consists essentially of 4,4',4",4'"-cobalt phthalocyanine dispersed on γ-alumina.
Claim 7
Dependent Claim
17 words
The process of claim 4 wherein the fixed bed consists essentially of 4,4',4",4'"-cobalt phthalocyanine dispersed on silica.
Claim 8
Dependent Claim
17 words
The process of claim 4 wherein the fixed bed consists essentially of 4,4',4",4'"-cobalt phthalocyanine dispersed on charcoal.
Claim 9
Dependent Claim
17 words
The process of claim 4 wherein the fixed bed consists essentially of 4,4',4",4'"-cobalt phthalocyanine dispersed on magnesia.
Claim 10
Dependent Claim
17 words
The process of claim 4 wherein the fixed bed consists essentially of 4,4',4",4'"-cobalt phthalocyanine dispersed on pumice.
Claim 11
Dependent Claim
17 words
The process of claim 4 wherein the fixed bed consists essentially of 4,4',4",4'"-cobalt phthalocyanine dispersed on mordenite.
Claim 12
Dependent Claim
13 words
The process of claim 1 wherein the oxygen-containing atmosphere consists essentially of oxygen.
Claim 13
Dependent Claim
11 words
The process of claim 1 wherein the oxygen-containing atmosphere comprises air.
Claim 14
Dependent Claim
15 words
The process of claim 1 wherein the petroleum distillate charge stock is an FCC gasoline.
Claim 15
Dependent Claim
22 words
The process of claim 1 wherein the treatment is effected in a liquid-liquid two phase petroleum distillate charge stock-4,4',4",4'"-cobalt phthalocyanine tetrasulfonate system.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |