US3861890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline vapor recovery system and method
Assignee: Alar Engineering Corp
•
Filing: 1973-05-03
•
Granted: 1975-01-21
•
Expires: 1993-05-03
Abstract
Abstract Gasoline vapor recovery system particularly adapted for bulk flow plants. The system includes an absorber into which raw gasoline vapor is introduced, as by a connection from a tank truck while the tank truck is loaded with gasoline. Light oil, such as kerosene, is pumped into the absorber and acts as a carrier, carrying the gasoline vapor through a heat exchanger and trim heater to adjust the temperature and then through a stripper, from which the gasoline is stripped from the kerosene as a vapor. The gasoline vapor is drawn from the stripper to a gas cooler by a vacuum pump and then compressed and condensed in the form of a liquid blendable into a desired grade of gasoline. The lean oil from the system may be pumped back to the absorber and reused.
Inventors
- 👤 Alex J Doncer
- 👤 Harold R White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:26
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/04; B67D7/0476; B01; B01D; B01D53/00; B01D53/14; B01D53/1418; B01D53/1487; B65; B65D; B65D90/00; B65D90/22; B65D90/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
150 words
IN A METHOD OF RECOVERING GASOLINE FROM GASOLINE VAPOR, INCLUDING THE PROVISION OF A LEAN OIL STORAGE TANK AND A RICH OIL STORAGE TANK, ESTABLISHING A CONSTANT FEED OF LEAN OIL FROM THE LEAN OIL STORAGE TANK TO AN ABSORBER, WITHDRAWING RICH OIL FROM THE BOTTOM OF THE ABSORBER AND PASSING TO THE RICH OIL STORAGE TANK, PASSING THE RICH OIL FROM THE RICH OIL STORAGE TANK THROUGH A HEAT EXCHANGER, PASSING PART OF THE OIL FROM THE HEAT EXCHANGER TO A TRIM COOLER, FORCING THE OIL BY THE TRIM COOLER TO THE ABSORBER, AND PASSING THE OIL FROM THE FIRST HEAT EXCHANGER THROUGH A SECOND HEAT EXCHANGER TO S STRIPPER AND STRIPPING THE GASOLINE VAPOR FROM THE RICH OIL, REMOVING THE GASOLINE AS A VAPOR BY VACUUM, AND THEN COMPRESSING AND CONDENSING THE VAPOR AND WITHDRAWING THE CONDENSED VAPOR BY BLENDING IN THE FORM OF A REQUIRED GASOLINE MIXTURE.
Claim 2
Dependent Claim
150 words
IN A METHOD OF RECOVERING GASOLINE FROM GASOLINE VAPOR, INCLUDING THE PROVISION OF A LEAN OIL STORAGE TANK AND A RICH OIL STORAGE TANK, ESTABLISHING A CONSTANT FEED OF LEAN OIL FROM THE LEAN OIL STORAGE TANK TO AN ABSORBER, WITHDRAWING RICH OIL FROM THE BOTTOM OF THE ABSORBER AND PASSING TO THE RICH OIL STORAGE TANK, PASSING THE RICH OIL FROM THE RICH OIL STORAGE TANK THROUGH A HEAT EXCHANGER, PASSING PART OF THE OIL FROM THE HEAT EXCHANGER TO A TRIM COOLER, FORCING THE OIL BY THE TRIM COOLER TO THE ABSORBER, AND PASSING THE OIL FROM THE FIRST HEAT EXCHANGER THROUGH A SECOND HEAT EXCHANGER TO S STRIPPER AND STRIPPING THE GASOLINE VAPOR FROM THE RICH OIL, REMOVING THE GASOLINE AS A VAPOR BY VACUUM, AND THEN COMPRESSING AND CONDENSING THE VAPOR AND WITHDRAWING THE CONDENSED VAPOR BY BLENDING IN THE FORM OF A REQUIRED GASOLINE MIXTURE.
Claim 3
Dependent Claim
46 words
The method of claim 1, including the sensing of the flow of gasoline vapor to the absorber, and controlling the flow of lean oil to the absorber and thereby balancing the flow of lean oil to the absorber in accordance with flow of gasoline vapor thereto.
Claim 4
Dependent Claim
18 words
The method of claim 1, wherein the vapor remaining after the condensing operation is recycled through the absorber.
Claim 5
Dependent Claim
38 words
The method of claim 1, wherein the heavy oil is passed through a plurality of heat exchangers in series with the stripper and the oil stripped from the gasoline in the stripper is recirculated through the heat exchanger.
Claim 6
Dependent Claim
29 words
The method of claim 1, wherein the gasoline vapor is supplied to the absorber through an accumulator at atmospheric pressure and at a temperature in the order of 90*.
References Cited (Backward Citations)
US1510434A
Cited
US2853149A
Cited
US3191361A
Cited
US3242646A
Cited
US3463603A
Cited
US3714790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |