Patent US4976697A successfully refreshed from Google Patents.
US3897193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor recovery and disposal system
Assignee: Shell USA Inc
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Filing: 1973-09-27
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Granted: 1975-07-29
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Expires: 1993-09-27
Abstract
Abstract A system is disclosed for preventing gasoline vapors contained in air vented from gasoline storage tanks from entering the atmosphere, which includes a conduit to pass gasoline vapor-laden air to a bed of adsorbent for gasoline and, when the adsorbent approaches saturation, subjecting it to back-flushing, with or without heat, to an extent and for a time adequate to remove enough gasoline from the adsorbent to restore it to a regenerated condition, and incinerating the gasoline removed from the adsorbent bed. It is also disclosed to employ two separate collection systems, one including a vessel for storing gasoline vapor-rich air and the other for passing vapor-laden air through an adsorbent bed and employing the vapor-rich air as a supplemental fuel to maintain combustion in an incinerator when insufficient gasoline is contained in the air used to backwash and regenerate the adsorbent bed to support combustion.
Inventors
- 👤 Abraham Kattan
- 👤 John E Gwyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:31
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; F; F23; F23G; F23G7/00; F23G7/06; B01D2259/00; B01D2259/40; B01D2259/402; B01D2259/45; B01D2259/4516; B01D2259/4525; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
A PROCESS FOR RECOVERING AND DISPOSING OF GASOLINE VAPOR FROM VAPOR-LADED AIR EXPELLED FROM A TANK WHILE FILLING IT WITH GASOLINE COMPRISING: A. COLLECTING SAID VAPORS, B. PASSING AT LEAST SOME OF SAID VAPORS THROUGH A BED OF SOLID ADSORBENT CAPABLE OF SELECTIVELY ADSORBING GASOLINE FROM THE VAPOR-LADEN AIR, C. PASSING AIR SUBSTANTIALLY FREE OF GASOLINE VAPORS FROM THE OTHER SIDE OF SAID BED OF ADSORBENT TO THE ATMOSPHERE, D. MAINTAINING A VOLUME OF GASOLINE VAPOR-RICH AIR, E. STOPPING THE FLOW OF VAPOR-LADEN AIR THROUGH SAID BED BEFORE SAID ADSORBENT BECOMES SATURATED WITH GASOLINE,
Claim 2
Dependent Claim
94 words
A PROCESS FOR RECOVERING AND DISPOSING OF GASOLINE VAPOR FROM VAPOR-LADED AIR EXPELLED FROM A TANK WHILE FILLING IT WITH GASOLINE COMPRISING: A. COLLECTING SAID VAPORS, B. PASSING AT LEAST SOME OF SAID VAPORS THROUGH A BED OF SOLID ADSORBENT CAPABLE OF SELECTIVELY ADSORBING GASOLINE FROM THE VAPOR-LADEN AIR, C. PASSING AIR SUBSTANTIALLY FREE OF GASOLINE VAPORS FROM THE OTHER SIDE OF SAID BED OF ADSORBENT TO THE ATMOSPHERE, D. MAINTAINING A VOLUME OF GASOLINE VAPOR-RICH AIR, E. STOPPING THE FLOW OF VAPOR-LADEN AIR THROUGH SAID BED BEFORE SAID ADSORBENT BECOMES SATURATED WITH GASOLINE,
Claim 3
Independent Claim
168 words
A system to recover and dispose of gasoline from vapor-laden air that is vented from a gasoline storage tank while said tank is being filled, comprising: A. means for collecting vapor-laden air from said storage tank, B. at least one vessel containing a bed of solid adsorbent capable of selectively adsorbing gasoline from said vapor-laden air, C. a vent to the atmosphere from said vessel, D. a valved inlet into said vessel on the other side of said bed from said vent, said inlet connected to said means for collecting vapor-laden air, E. a valved conduit from said vessel connecting the inlet side of said bed to the inlet of a furnace, F. Means for drawing backwash gas consisting essentially of air through said bed and discharging it in said furnace, G. means for igniting said solely gasoline-containing backwash air in said furance, and H. means for stopping said discharge of backwash air to the furnace when the backwash gas does not contain enough gasoline to support combustion.
Claim 4
Independent Claim
168 words
A system to recover and dispose of gasoline from vapor-laden air that is vented from a gasoline storage tank while said tank is being filled, comprising: A. means for collecting vapor-laden air from said storage tank, B. at least one vessel containing a bed of solid adsorbent capable of selectively adsorbing gasoline from said vapor-laden air, C. a vent to the atmosphere from said vessel, D. a valved inlet into said vessel on the other side of said bed from said vent, said inlet connected to said means for collecting vapor-laden air, E. a valved conduit from said vessel connecting the inlet side of said bed to the inlet of a furnace, F. Means for drawing backwash gas consisting essentially of air through said bed and discharging it in said furnace, G. means for igniting said solely gasoline-containing backwash air in said furance, and H. means for stopping said discharge of backwash air to the furnace when the backwash gas does not contain enough gasoline to support combustion.
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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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |