US3720072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the recovery of halocarbons
Assignee: Union Carbide Corp
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Filing: 1971-02-26
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Granted: 1973-03-13
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Expires: 1991-02-26
Abstract
Abstract Method and apparatus are disclosed for the condensation of halocarbon vapors evolved at a heat transfer work site comprising: passing said vapors through a conventional primary condensation zone to condense the major portion of said vapors; and passing the uncondensed portion of said vapors to a secondary condensation zone in which substantially complete condensation is effected across a heat transfer barrier between said vapors and a low temperature liquified gas.
Inventors
- 👤 R Berta
- 👤 P Byrnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:16
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0033; B01D5/0051; B01D5/0036
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
130 words
Apparatus for the recovery of low boiling point liquids having, in combination with a heat transfer work site at which said liquids are boiled, primary condenser means for re-liquifying the major portion of the boiled liquids, secondary condenser means, and hood means positioned above said secondary condenser means for enclosing said condenser means, said secondary condenser means comprising a condenser network for the passage of low temperature liquified gas therethrough in heat exchange with rising vapors of said boiled liquids passing through said network, shroud means, having means for effusing gasified low temperature gas downwardly from said shroud means to envelop said network, and conduit means between said network and said shroud means for conveying low temperature liquified gas gasified in said network to said shroud means for effusion therefrom.
Claim 2
Dependent Claim
130 words
Apparatus for the recovery of low boiling point liquids having, in combination with a heat transfer work site at which said liquids are boiled, primary condenser means for re-liquifying the major portion of the boiled liquids, secondary condenser means, and hood means positioned above said secondary condenser means for enclosing said condenser means, said secondary condenser means comprising a condenser network for the passage of low temperature liquified gas therethrough in heat exchange with rising vapors of said boiled liquids passing through said network, shroud means, having means for effusing gasified low temperature gas downwardly from said shroud means to envelop said network, and conduit means between said network and said shroud means for conveying low temperature liquified gas gasified in said network to said shroud means for effusion therefrom.
Claim 3
Dependent Claim
79 words
Secondary condenser apparatus for the condensation of halocarbon vapors comprising: a condenser network for the passage of low temperature liquified gas therethrough in heat exchange with vapors of said halocarbon passing through said network; shroud means having means for effusing gasified low temperature gas from said shroud means to envelop said network; and conduit means between said network and said shroud means for conveying low temperature liquified gas gasified in said network to said shroud means for effusion therefrom.
Claim 4
Dependent Claim
79 words
Secondary condenser apparatus for the condensation of halocarbon vapors comprising: a condenser network for the passage of low temperature liquified gas therethrough in heat exchange with vapors of said halocarbon passing through said network; shroud means having means for effusing gasified low temperature gas from said shroud means to envelop said network; and conduit means between said network and said shroud means for conveying low temperature liquified gas gasified in said network to said shroud means for effusion therefrom.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |