US5543057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supercritical water oxidation of organics using a mobile surface
Assignee: 3500764 Canada Inc
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Filing: 1995-03-13
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Granted: 1996-08-06
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Expires: 2015-03-13
Abstract
Abstract A method for oxidizing organic material in an aqueous stream containing one or more inorganic salts, inorganic salt precursors or mixtures thereof, comprising oxidizing said organic material under supercritical conditions in the presence of an oxidant and a mobile surface of particles to which inorganic salts insoluble under the reaction conditions can adhere.
Inventors
- 👤 Philip Whiting
- 👤 Anthony H. Mehta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:49
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/025; C02F1/72; C02F1/725; C02F11/00; C02F11/06; C02F11/08; C02F11/086; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/908
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
64 words
A method for oxidizing an aqueous stream containing organic compounds and one or more inorganic salts or salt precursors insoluble under the reaction conditions comprising oxidizing the organic compounds in a reactor under supercritical conditions for the aqueous stream in the presence of an oxidant and mobile particles which provide a surface to which inorganic salts insoluble under the supercritical reaction conditions can adhere.
Claim 2
Independent Claim
64 words
A method for oxidizing an aqueous stream containing organic compounds and one or more inorganic salts or salt precursors insoluble under the reaction conditions comprising oxidizing the organic compounds in a reactor under supercritical conditions for the aqueous stream in the presence of an oxidant and mobile particles which provide a surface to which inorganic salts insoluble under the supercritical reaction conditions can adhere.
Claim 3
Dependent Claim
21 words
The method of claim 1 in which the mobile particles which provide a surface is in the form of a slurry.
Claim 4
Dependent Claim
18 words
The method of claim 2 in which the slurry flows concurrently with the aqueous stream through the reactor.
Claim 5
Dependent Claim
19 words
The method of claim 2 in which the slurry flows counter current to the aqueous stream through the reactor.
Claim 6
Dependent Claim
23 words
The method of claim 1 in which the mobile particles which provide a surface is in the form of a recirculating fluidized bed.
Claim 7
Independent Claim
15 words
The method of claims 2, 3 or 4 in which the particles are inert materials.
Claim 8
Independent Claim
35 words
The method of claims 2, 3 or 4 in which the mobile particles which provide a surface is a material selected from the group consisting of sand, silica, titanium dioxide, clay, metallic or ceramic particles.
Claim 9
Independent Claim
34 words
The method of claims 2, 3 or 4 in which the mobile particles which provide a surface is a catalytic particle selected from the group consisting of Zeolites, heavy metal oxides and noble metals.
Claim 10
Independent Claim
59 words
The method of claims 1, 3 or 4 including the further steps of: (a) removing a portion of the mobile particles which provide a surface from the reactor; (b) dissolving any inorganic salts adhering to said portion of the particles which provide a surface; (c) recirculating said portion of the mobile particles which provide a surface into the reactor.
Claim 11
Independent Claim
27 words
The method of claims 3, 4 or 5 in which the mobile particle surface has a surface area more than 1000 times greater than the surrounding reactor.
Claim 12
Independent Claim
87 words
A method for oxidizing an aqueous stream containing organic compounds and one or more inorganic salts or salt precursors insoluble under the reaction conditions comprising oxidizing the organic compounds in a reactor under supercritical conditions for the aqueous stream in the presence of an oxidant and a mobile particle surface present in the form of an aqueous slurry having up to 50% particles by weight of said slurry, said mobile particle surface providing a surface to which inorganic salts insoluble under the supercritical reaction conditions can adhere.
Claim 13
Independent Claim
87 words
A method for oxidizing an aqueous stream containing organic compounds and one or more inorganic salts or salt precursors insoluble under the reaction conditions comprising oxidizing the organic compounds in a reactor under supercritical conditions for the aqueous stream in the presence of an oxidant and a mobile particle surface present in the form of an aqueous slurry having up to 50% particles by weight of said slurry, said mobile particle surface providing a surface to which inorganic salts insoluble under the supercritical reaction conditions can adhere.
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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) | 1999-08-06 | 2000-02-05 | 2000-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-06 | 2004-02-05 | 2004-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-06 | 2008-02-05 | 2008-08-06 | $7700.00 | Window Closed / Lapsed |