Patent US3907678A successfully refreshed from Google Patents.
US3907678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split air stream before and after the heat exchanger in a wet oxidation process
Assignee: US Filter Zimpro Inc
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Filing: 1974-04-11
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Granted: 1975-09-23
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Expires: 1994-04-11
Abstract
Abstract A wet oxidation system including an air stream for treating an organic containing aqueous stream which is characterized by a tendency to polymerize when heated in the absence of air, the improvement being in splitting the air stream, part of the air being added before the heat exchanger and the remainder of the air being added after the heat exchanger, the division of the air being determined to be that amount which is necessary to be added before the heat exchangers to prevent polymerization.
Inventors
- 👤 Louis A Pradt
- 👤 Wayne B Gitchel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:06
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/06; C02F11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A WET AIR OXIDATION SYSTEM COMPRISING A HEAT EXCHANGER AND OXIDATION REACTOR, A METHOD FOR TREATING A FLUID STREAM CONTAINING ORGANIC SUBSTANCES CHARACTERIZED BY A TENDENCY TO POLYMERIZE WHEN HEATED IN THE ABSENCE OF OXYGEN, WHICH COMPRISES DETERMINING THE MINIMUM AMOUNT OF OXYGEN NECESSARY TO OXIDIZE THE POLYMERIZABLE SUBSTANCES TO NON-POLYMERIZABLE FORM, ADDING TO SAID FLUID STREAM PRIOR TO ENTERING THE HEAT EXCHANGER AIR CONTAINING SAID MINIMUM AMOUNT OF OXYGEN, AND ADDING TO SAID FLUID STREAM AFTER LEAVING THE HEAT EXCHANGER AND PRIOR TO OR UPON ENTERING THE REACTOR ADDITIONAL
Claim 2
Dependent Claim
91 words
IN A WET AIR OXIDATION SYSTEM COMPRISING A HEAT EXCHANGER AND OXIDATION REACTOR, A METHOD FOR TREATING A FLUID STREAM CONTAINING ORGANIC SUBSTANCES CHARACTERIZED BY A TENDENCY TO POLYMERIZE WHEN HEATED IN THE ABSENCE OF OXYGEN, WHICH COMPRISES DETERMINING THE MINIMUM AMOUNT OF OXYGEN NECESSARY TO OXIDIZE THE POLYMERIZABLE SUBSTANCES TO NON-POLYMERIZABLE FORM, ADDING TO SAID FLUID STREAM PRIOR TO ENTERING THE HEAT EXCHANGER AIR CONTAINING SAID MINIMUM AMOUNT OF OXYGEN, AND ADDING TO SAID FLUID STREAM AFTER LEAVING THE HEAT EXCHANGER AND PRIOR TO OR UPON ENTERING THE REACTOR ADDITIONAL
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |