US4113604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating a sour petroleum distillate with anion exchange resin and with metal phthalocyanine catalyst
Assignee: Honeywell UOP LLC
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Filing: 1977-05-23
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Granted: 1978-09-12
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Expires: 1997-05-23
Abstract
Abstract A catalytic process for treating a mercaptan-containing sour petroleum distillate is disclosed. The distillate is contacted with a weakly basic anion exchange resin to separate a portion of the mercaptan content and substantially all of the acidic catalyst toxins or toxin precursors. The resulting distillate is subsequently treated in contact with a supported metal phthalocyanine catalyst in admixture with an oxidizing agent and an alkaline solution to convert the residual mercaptans to innocuous disulfides.
Inventors
- 👤 David H. J. Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:40
CPC Classifications
C; C10; C10G; C10G53/00; C10G53/02; C10G53/14; C10G25/00; C10G25/02; C10G25/03; C10G25/05
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A catalytic process for treating a mercaptan-containing sour petroleum distillate contaminated with acidic catalyst toxins or toxin precursors which comprises: (a) contacting in a first step said distillate with an anion exchange resin comprising a porous styrene-divinylbenzene cross-linked polymer matrix having tertiary amine functional groups and recovering said distillate reduced in mercaptan content and substantially free of acidic catalyst toxins and precursors thereof; (b) contacting in a second step said resultant distillate from step (a) with a supported metal phthalocyanine catalyst in admixture with an oxidizing agent and an alkaline solution having a pH of from about 9 to about 14; and (c) recovering the thus treated distillate from step (b) substantially free of mercaptans.
Claim 2
Dependent Claim
115 words
A catalytic process for treating a mercaptan-containing sour petroleum distillate contaminated with acidic catalyst toxins or toxin precursors which comprises: (a) contacting in a first step said distillate with an anion exchange resin comprising a porous styrene-divinylbenzene cross-linked polymer matrix having tertiary amine functional groups and recovering said distillate reduced in mercaptan content and substantially free of acidic catalyst toxins and precursors thereof; (b) contacting in a second step said resultant distillate from step (a) with a supported metal phthalocyanine catalyst in admixture with an oxidizing agent and an alkaline solution having a pH of from about 9 to about 14; and (c) recovering the thus treated distillate from step (b) substantially free of mercaptans.
Claim 3
Dependent Claim
41 words
The process of claim 1 further characterized with respect to step (b) in that said contact is effected at a temperature of from about 10° to about 100° C. and at a pressure of from about atmospheric to about 100 atmospheres.
Claim 4
Dependent Claim
41 words
The process of claim 1 further characterized with respect to step (b) in that said contact is effected at a temperature of from about 10° to about 250° C. and at a pressure of from about atmospheric to about 100 atmospheres.
Claim 5
Dependent Claim
22 words
The process of claim 1 further characterized with respect to step (b) in that said alkaline solution is an aqueous caustic solution.
Claim 6
Dependent Claim
21 words
The process of claim 1 further characterized with respect to step (b) in that said metal phthalocyanine catalyst comprises cobalt phthalocyanine.
Claim 7
Dependent Claim
26 words
The process of claim 1 further characterized with respect to step (b) in that said supported metal phthalocyanine catalyst is an activated charcoal-supported metal phthalocyanine catalyst.
Claim 8
Dependent Claim
27 words
The process of claim 1 further characterized with respect to step (b) in that said supported metal phthalocyanine catalyst is an activated charcoal-supported cobalt phthalocyanine monosulfonate catalyst.
References Cited (Backward Citations)
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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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |