Patent US3778969A successfully refreshed from Google Patents.
US3778969A
Expired / Lapsed
US
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Ejector vapor recovery system for stored volatile liquids
Assignee: Chicago Bridge and Iron Co
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Filing: 1972-04-12
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Granted: 1973-12-18
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Expires: 1992-04-12
Abstract
Abstract A process of separating a volatile liquid vapor from admixture with air by pressurizing a liquid stream which is at a temperature below its boiling point, feeding the pressurized liquid stream through an ejector to a lower pressure, conducting a stream of air and vapors of the liquid to the suction side of the ejector to form an admixture of liquid, liquid vapor and air, at a pressure intermediate the pressure of the streams fed to the ejector but adequate to condense the volatile liquid vapors to liquid, and gravity separating the volatile liquid, including condensed vapor, from the air.
Inventors
- 👤 J Sudduth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:47
CPC Classifications
B; B01; B01D; B01D53/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
14 words
The process of claim 1 in which the streams are at about ambient temperature.
Claim 2
Dependent Claim
21 words
The process of claim 1 in which the mixture of vapors and air is at about atmospheric pressure or slightly thereabove.
Claim 3
Dependent Claim
19 words
The process of claim 1 in which pressurizing of the volatile liquid stream is effected by a liquid pump.
Claim 4
Dependent Claim
25 words
The process of claim 1 in which the admixture is conveyed from the ejector to a separator vessel and the liquid separated from air therein.
Claim 5
Dependent Claim
24 words
The process of claim 1 in which the liquid is an organic liquid material having a boiling point of about 150* to 350* F.
Claim 6
Dependent Claim
143 words
The process of separating a volatile liquid vapor from admixture with air which comprises: removing a volatile liquid stream at a temperature below its boiling point from a storage tank containing such liquid and a mixture of air and vapor from the liquid, pressurizing the volatile liquid stream, feeding the pressurized volatile liquid stream to the inlet side of an ejector and through an ejector outlet to a lower pressure thereby creating a suction side in the ejector, conducting a stream of air and vapors of the volatile liquid from the tank to the suction side of the ejector to form an admixture of volatile liquid, volatile liquid vapor and air, at a pressure intermediate the pressure of the streams fed to the ejector but adequate to condense the vapors to liquid, and separating the volatile liquid, including condensed vapor, from the air.
Claim 7
Dependent Claim
99 words
Apparatus comprising: a storage tank for a volatile liquid, a liquid conduit from the storage tank to a liquid pump, a liquid conduit from the liquid pump to the inlet side of an ejector, a vapor conduit from the vapor space of the storage tank to the suction side of the ejector, a conduit from the outlet side of the ejector to a gravity separator vessel, a conduit from the separator vessel to a disposal means for venting air from the separator vessel, and a liquid conduit from the separator vessel to the storage tank for returning liquid thereto.
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |