US4124493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic oxidation of mercaptan in petroleum distillate including alkaline reagent and substituted ammonium halide
Assignee: Honeywell UOP LLC
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Filing: 1978-02-24
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Granted: 1978-11-07
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Expires: 1998-02-24
Abstract
Abstract A process for treating a mercaptan-containing sour petroleum distillate is disclosed. The process comprises contacting said distillate with a supported mercaptan oxidation catalyst at oxidation conditions in the presence of a substituted ammonium halide commingled with an alkaline reagent.
Inventors
- 👤 Robert R. Frame
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:29
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/1616; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0239; B01J31/0254; B01J31/18; B01J31/1805; B01J31/181; B01J31/1825; B01J31/183; C; C10; C10G; C10G27/00; C10G27/04; C10G27/06; C10G27/10; B01J21/00; B01J21/18; B01J2231/00; B01J2231/70; B01J2531/00; B01J2531/02; B01J2531/0238; B01J2531/0241; B01J2531/025; B01J2531/80; B01J2531/84; B01J2531/845; B01J2540/00; B01J2540/30; B01J2540/34
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
A process for treating a mercaptan-containing sour petroleum distillate to oxidize the mercaptan present in said distillate, said process comprises contacting said distillate with (a) a supported mercaptan oxidation catalyst (b) an oxidizing agent, an alkaline agent and (d) a substituted ammonium halide represented by the structural formula ##STR3## wherein R is a hydrocarbon radical containing up to about 20 carbon atoms and selected from the group consisting of alkyl, cycloalkyl, aryl, aralkyl and alkaryl, R 1 is a substantially straight chain alkyl radical containing from about 5 to about 20 carbon atoms, and X is a chloride, fluoride, bromide or iodide.
Claim 2
Dependent Claim
102 words
A process for treating a mercaptan-containing sour petroleum distillate to oxidize the mercaptan present in said distillate, said process comprises contacting said distillate with (a) a supported mercaptan oxidation catalyst (b) an oxidizing agent, an alkaline agent and (d) a substituted ammonium halide represented by the structural formula ##STR3## wherein R is a hydrocarbon radical containing up to about 20 carbon atoms and selected from the group consisting of alkyl, cycloalkyl, aryl, aralkyl and alkaryl, R 1 is a substantially straight chain alkyl radical containing from about 5 to about 20 carbon atoms, and X is a chloride, fluoride, bromide or iodide.
Claim 3
Dependent Claim
30 words
The process of claim 1 further characterized in that said alkaline reagent is sodium hydroxide in from about a 2 wt. % to about a 30 wt. % aqueous solution.
Claim 4
Dependent Claim
30 words
The process of claim 1 further characterized in that said substituted ammonium halide is employed in from about a 0.001:1 to about a 1:1 mole ratio with said alkaline reagent.
Claim 5
Dependent Claim
20 words
The process of claim 1 further characterized in that said supported mercaptan oxidation catalyst is a charcoal-supported cobalt phthalocyanine monosulfonate.
Claim 6
Dependent Claim
35 words
The process of claim 1 further characterized in that said distillate is maintained in contact with said catalyst for a time equivalent to a liquid hourly space velocity of from about 0.5 to about 10.
Claim 7
Dependent Claim
18 words
The process of claim 1 further characterized in that said substituted ammonium halide is a substituted ammonium chloride.
Claim 8
Dependent Claim
30 words
The process of claim 1 further characterized in that said substituted ammonium halide is a dimethylbenzylalkylammonium halide wherein the alkyl substituent contains from about 12 to about 18 carbon atoms.
Claim 9
Dependent Claim
16 words
The process of claim 1 further characterized in that said substituted ammonium halide is dimethylbenzyldodecylammonium chloride.
Claim 10
Dependent Claim
16 words
The process of claim 1 further characterized in that said substituted ammonium halide is dimethylbenzyltetradecylammonium chloride.
Claim 11
Dependent Claim
16 words
The process of claim 1 further characterized in that said substituted ammonium halide is dimethylbenzylhexadecylammonium chloride.
Claim 12
Dependent Claim
16 words
The process of claim 1 further characterized in that said substituted ammonium halide is dimethylbenzyloctadecylammonium chloride.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |