Patent US2437007A successfully refreshed from Google Patents.
US3746079A
Expired / Lapsed
US
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Method of vaporizing a liquid stream
Assignee: Black Sivalls and Bryson Inc
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Filing: 1972-01-21
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Granted: 1973-07-17
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Expires: 1992-01-21
Abstract
Abstract The present invention relates to an improved method of vaporizing a liquid stream. A liquid stream is passed within a heat exchanger in heat exchange relationship with a stream of heating medium vapor so that the liquid stream is vaporized and at least a portion of the heating medium vapor is condensed. A controlled rate of inert gas is combined with the heating medium vapor so that the rate of heat transfer from the condensing heating medium vapor to the vaporizing liquid is restricted and maintained below the rate of heat transfer at which vapor-binding of the liquid occurs.
Inventors
- 👤 E Arenson
- 👤 G Arenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:20
CPC Classifications
F; F28; F28D; F28D19/00; F17; F17C; F17C7/00; F17C7/02; F17C7/04; F28D15/00; F28D15/02; F28F; F28F27/00; F17C2221/00; F17C2221/03; F17C2221/031; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2227/00; F17C2227/03; F17C2227/0367; F17C2227/0388; F17C2227/0393; F17C2250/00; F17C2250/06; F17C2250/0605; F17C2250/0636
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
109 words
An improved method of vaporizing a liquid stream by exchange of heat with a heating medium vapor comprising the steps of: passing said liquid stream within a heat exchanger in heat exchange relationship with said stream of heating medium vapor so that the liquid stream is vaporized and so that at least a portion of the heating medium vapor is condensed; and combining a controlled rate of inert gas with said heating medium vapor so that the rate of heat transfer from the condensing heating medium vapor to the vaporizing liquid is controlled and maintained below the rate of heat transfer at which vapor-binding of the vaporizing liquid occurs.
Claim 2
Dependent Claim
109 words
An improved method of vaporizing a liquid stream by exchange of heat with a heating medium vapor comprising the steps of: passing said liquid stream within a heat exchanger in heat exchange relationship with said stream of heating medium vapor so that the liquid stream is vaporized and so that at least a portion of the heating medium vapor is condensed; and combining a controlled rate of inert gas with said heating medium vapor so that the rate of heat transfer from the condensing heating medium vapor to the vaporizing liquid is controlled and maintained below the rate of heat transfer at which vapor-binding of the vaporizing liquid occurs.
Claim 3
Dependent Claim
37 words
The method of claim 1 which is further characterized to include the step of decreasing the rate of inert gas combined with said heating medium vapor in proportion to the increase in fouling of said heat exchanger.
Claim 4
Dependent Claim
13 words
The method vapor of claim 2 wherein the heating medium vapor is steam.
Claim 5
Dependent Claim
11 words
The method of claim 3 wherein the inert gas is nitrogen.
Claim 6
Dependent Claim
11 words
The method of claim 3 wherein the inert gas is air.
Claim 7
Dependent Claim
127 words
An improved method of vaporizing a liquid stream by exchange of heat with a heating medium vapor which comprises the steps of: heating a body of heating medium liquid confined within a closed vessel so that a portion of said heating medium liquid is continuously vaporized; passing said liquid stream within the closed vessel in heat exchange relationship with said heating medium vapor so that the liquid stream is vaporized and a portion of the heating medium vapor is continuously condensed; and injecting a quantity of inert gas into said closed vessel, said quantity being sufficient to decrease the rate of heat transfer from the condensing heating medium vapor to the vaporizing liquid stream to a level such that vapor-binding of the vaporizing liquid stream is prevented.
Claim 8
Dependent Claim
127 words
An improved method of vaporizing a liquid stream by exchange of heat with a heating medium vapor which comprises the steps of: heating a body of heating medium liquid confined within a closed vessel so that a portion of said heating medium liquid is continuously vaporized; passing said liquid stream within the closed vessel in heat exchange relationship with said heating medium vapor so that the liquid stream is vaporized and a portion of the heating medium vapor is continuously condensed; and injecting a quantity of inert gas into said closed vessel, said quantity being sufficient to decrease the rate of heat transfer from the condensing heating medium vapor to the vaporizing liquid stream to a level such that vapor-binding of the vaporizing liquid stream is prevented.
Claim 9
Dependent Claim
11 words
The method of claim 6 wherein the heating medium is water.
Claim 10
Dependent Claim
11 words
The method of claim 7 wherein the inert gas is air.
Claim 11
Dependent Claim
11 words
The method of claim 7 wherein the inert gas is nitrogen.
Claim 12
Dependent Claim
110 words
In a method of vaporizing a liquid stream wherein the liquid stream is passed within a heat exchanger in heat exchange relationship with a stream of steam so that the liquid stream is vaporized and the steam is cooled and condensed, the improvement comprising: diluting said stream of steam with a predetermined quantity of inert gas so that the rate of heat transfer from the steam to the vaporizing liquid stream is reduced to a level such that vapor-binding of the vaporizing liquid stream is prevented; and reducing the dilution of the stream of steam with the inert gas in proportion to the increase in fouling of said heat exchanger.
Claim 13
Dependent Claim
110 words
In a method of vaporizing a liquid stream wherein the liquid stream is passed within a heat exchanger in heat exchange relationship with a stream of steam so that the liquid stream is vaporized and the steam is cooled and condensed, the improvement comprising: diluting said stream of steam with a predetermined quantity of inert gas so that the rate of heat transfer from the steam to the vaporizing liquid stream is reduced to a level such that vapor-binding of the vaporizing liquid stream is prevented; and reducing the dilution of the stream of steam with the inert gas in proportion to the increase in fouling of said heat exchanger.
Claim 14
Dependent Claim
11 words
The method of claim 10 wherein the inert gas is nitrogen.
Claim 15
Dependent Claim
11 words
The method of claim 11 wherein the inert gas is air.
References Cited (Backward Citations)
US2924635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |