Patent US3772181A successfully refreshed from Google Patents.
US3772181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating water-soluble organic wastes
Assignee: Texaco Inc
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Filing: 1971-10-27
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Granted: 1973-11-13
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Expires: 1991-10-27
Abstract
Abstract A process for treating a waste feed stream containing essentially water-soluble organic wastes, in particular those originating in refinery reservoirs, refinery waste streams, refinery pits, and lube oil additive plants, is described as involving heating the stream under turbulent flow conditions to temperatures of 400* to 700*F and pressures of 300 to 3,100 psi in the presence of air or of oxygen thereby splitting off carbon dioxide. The oxidized waste stream, which has a considerably reduced chemical oxygen demand, is continuously fed to a hot contacting zone and is in heat-exchange relationship with the incoming effluent stream.
Inventors
- 👤 E Cole
- 👤 H Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:04
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/06; C02F11/08; C02F11/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
20 words
The process according to claim 1 wherein said effluent stream is in heat exchange relationship with said waste feed stream.
Claim 2
Dependent Claim
19 words
The process according to claim 1 wherein said waste feed stream is the aqueous effluent from a refinery reservoir.
Claim 3
Dependent Claim
26 words
The process according to claim 1 wherein an oxidizing gas is sparged into said waste stream and caused to flow concurrently therewith through said contacting zone.
Claim 4
Dependent Claim
21 words
The process according to claim 1 wherein an oxidizing gas is added to the waste stream before the stream is heated.
Claim 5
Dependent Claim
17 words
The process according to claim 1 wherein a pressurized oxidizing gas is added to said waste stream.
Claim 6
Dependent Claim
24 words
The process according to claim 1 wherein an additional amount of said oxidizing gas is added to said stream as said stream is heated.
Claim 7
Dependent Claim
24 words
The process according to claim 1 wherein the pressure of said effluent stream is recovered and used to pump up said waste feed stream.
Claim 8
Dependent Claim
22 words
The process according to claim 1 wherein the pressure of said effluent stream is recovered and used to compress said oxidizing gas.
Claim 9
Dependent Claim
20 words
The process according to claim 1 wherein said waste stream is a waste stream from a lube oil additive plant.
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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |