US4174280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation process
Assignee: US Filter Zimpro Inc
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Filing: 1978-10-20
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Granted: 1979-11-13
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Expires: 1998-10-20
Abstract
Abstract A process for wet air oxidation of liquid or solid combustible materials which are insoluble, immiscible and difficult to suspend in water which comprises injecting said materials directly into the wet air oxidation reactor, thereby producing a regular, safe and trouble-free reaction.
Inventors
- 👤 Louis A. Pradt
- 👤 Wayne B. Gitchel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:06
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/06; C02F11/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
124 words
A process for oxidizing with an oxygen-containing gas in an aqueous medium in a sealed reactor an oxidizable material which is insoluble, immiscible and difficult to suspend or emulsify in water and selected from the group consisting of motor oils, diesel fuel, explosives and propellants, at a temperature and pressure sufficient to provide a controlled autogenic and self-sustaining oxidation reaction, which comprises passing said aqueous medium through a heat exchanger into said sealed reactor in order to heat the aqueous medium up to the required reaction temperature while supplying the reactor with an oxygen-containing gas, and at the same time injecting said oxidizable material directly into said reactor without heating said oxidizable material, thereby producing an oxidized effluent which is removed from the reactor.
Claim 2
Dependent Claim
124 words
A process for oxidizing with an oxygen-containing gas in an aqueous medium in a sealed reactor an oxidizable material which is insoluble, immiscible and difficult to suspend or emulsify in water and selected from the group consisting of motor oils, diesel fuel, explosives and propellants, at a temperature and pressure sufficient to provide a controlled autogenic and self-sustaining oxidation reaction, which comprises passing said aqueous medium through a heat exchanger into said sealed reactor in order to heat the aqueous medium up to the required reaction temperature while supplying the reactor with an oxygen-containing gas, and at the same time injecting said oxidizable material directly into said reactor without heating said oxidizable material, thereby producing an oxidized effluent which is removed from the reactor.
Claim 3
Dependent Claim
21 words
A process according to claim 1 in which the oxidized effluent is recycled through the heat exchanger back to the reactor.
Claim 4
Dependent Claim
16 words
The process according to claim 1 in which the material subjected to oxidation is diesel fuel.
Claim 5
Dependent Claim
23 words
The process according to claim 1 in which the material subjected to oxidation is a propellant comprising a mixture of nitrocellulose and nitroglycerin.
References Cited (Backward Citations)
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Cited
US3272740A
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US3449247A
Cited
US3772181A
Cited
US3661778A
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US3761409A
Cited
US4013560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |