US4861497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the processing of organic compounds
Assignee: KEMSHREDDER Ltd
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Filing: 1988-03-18
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Granted: 1989-08-29
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Expires: 2008-03-18
Abstract
Abstract This invention provides a method for the detoxification of aqueous solutions of organic compounds utilizing a liquid-phase oxidant such as hydrogen peroxide (aq) or ozone (aq). The aqueous solutions of organic compounds and the liquid-phase oxidant are mixed, then compressed and heated to bring the mixture into a supercritical phase. The oxidation reaction proceeds in the supercritical phase.
Inventors
- 👤 James F. Welch
- 👤 James D. Siegwarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:23
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/74; C02F1/78; C02F1/722; C02F11/00; C02F11/06; C02F11/08; C02F11/086; C02F1/02; C02F1/025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
105 words
A method of oxidizing an organic material which comprises: mixing an oxidant in a liquid phase with an aqueous feed ,stream containing therein an organic compound to be oxidized substantially only outside of a reaction zone; compressing said mixture to a pressure in excess of 3200 psia; heating said mixture to a reaction temperature of greater than 710° F. and into a supercritical phase for a time sufficient to decompose said oxidant and oxidize the organic compound within said reaction zone; cooling said reacted mixture by counter current flow of said reacted mixture to said unreacted mixture; and collecting the said reacted and cooled mixture.
Claim 2
Independent Claim
105 words
A method of oxidizing an organic material which comprises: mixing an oxidant in a liquid phase with an aqueous feed ,stream containing therein an organic compound to be oxidized substantially only outside of a reaction zone; compressing said mixture to a pressure in excess of 3200 psia; heating said mixture to a reaction temperature of greater than 710° F. and into a supercritical phase for a time sufficient to decompose said oxidant and oxidize the organic compound within said reaction zone; cooling said reacted mixture by counter current flow of said reacted mixture to said unreacted mixture; and collecting the said reacted and cooled mixture.
Claim 3
Dependent Claim
31 words
A method according to claim 1 wherein said liquid phase oxidant is mixed with said feed stream containing the organic compound in at least a stoichiometric amount for the oxidation reaction.
Claim 4
Dependent Claim
32 words
A method according to claim 1 wherein said liquid phase oxidant is mixed with said feed stream containing the organic compound in an excess of the stoichiometric amount for the oxidation reaction.
Claim 5
Dependent Claim
32 words
A method according to claim 1 wherein said liquid phase oxidant is mixed with said feed stream containing the organic compound in a deficiency of the stoichiometric amount for the oxidation reaction.
Claim 6
Dependent Claim
33 words
A method according to claim 1 wherein said liquid phase oxidant is selected from the group consisting of hydrogen peroxide (aq), ozone (aq), inorganic oxides that decompose to yield oxygen or mixtures thereof.
Claim 7
Dependent Claim
12 words
A method according to claim 5 wherein the oxidant is hydrogen peroxide.
Claim 8
Dependent Claim
31 words
A method according to claim 1 wherein the oxidant and the said organic compound(s) are fed in such amounts as to provide heat of reaction sufficient to maintain the reaction temperature.
References Cited (Backward Citations)
US4564458A
Cited
US4751005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |