US4191736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reacting liquids with solids
Assignee: EIDP Inc
•
Filing: 1975-11-19
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Granted: 1980-03-04
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Expires: 1995-11-19
Abstract
Abstract The foaming tendencies of continuous liquid-solid reactions which evolve gas are reduced by subjecting the reactant stream simultaneously to non-turbulent flow through an enclosed conduit having a vapor space above the flowing stream and to mild agitation to increase the liquid-solid and gas-liquid interface areas.
Inventors
- 👤 Dong M. Chay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:12
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; C01B7/03; C01B7/035; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002; B01J2219/00; B01J2219/00049; B01J2219/00245; B01J2219/0025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
145 words
In a process for continuously reacting a liquid with a first solid coreactive therewith in which a gas is evolved and a second normally solid product is formed and dispersed in the liquid, the foaming tendencies of the reaction are reduced by (1) forming a coreacting stream by admixing the liquid with granules of the first solid, the temperature of the admixture being sufficiently high to bring about the reaction; and (2) subjecting the coreacting stream to non-turbulent flow through an enclosed conduit having a continuous vapor space above the admixture, while subjecting the flowing coreacting stream to mild agitation to increase the liquid-solid and gas-liquid interface areas and remove gas from the coreacting liquid into the vapor space; and (3) continuing the flow of the coreacting stream and removal of gas therefrom for a time sufficient to attain a predetermined degree of the coreaction.
Claim 2
Dependent Claim
145 words
In a process for continuously reacting a liquid with a first solid coreactive therewith in which a gas is evolved and a second normally solid product is formed and dispersed in the liquid, the foaming tendencies of the reaction are reduced by (1) forming a coreacting stream by admixing the liquid with granules of the first solid, the temperature of the admixture being sufficiently high to bring about the reaction; and (2) subjecting the coreacting stream to non-turbulent flow through an enclosed conduit having a continuous vapor space above the admixture, while subjecting the flowing coreacting stream to mild agitation to increase the liquid-solid and gas-liquid interface areas and remove gas from the coreacting liquid into the vapor space; and (3) continuing the flow of the coreacting stream and removal of gas therefrom for a time sufficient to attain a predetermined degree of the coreaction.
Claim 3
Dependent Claim
48 words
The process of claim 1 in which the coreacting stream is mildly agitated and gas removed therefrom by operation of a rotating continuous screw in which from about 10 to about 80% of the screw surface lies above the surface of the flowing liquid within the vapor space.
Claim 4
Dependent Claim
35 words
The process of claim 1 in which the longitudinal axis of the conduit forms an angle of from about 1° to 10° with the horizontal by which the coreacting stream is subjected to gravity flow.
Claim 5
Dependent Claim
16 words
The process of claim 1 in which the evolved gas flows cocurrently with the coreacting stream.
Claim 6
Dependent Claim
24 words
The process of claim 1 in which a continuous positive flow of vapor is maintained through the vapor space cocurrently with the coreacting stream.
Claim 7
Dependent Claim
35 words
The process of claim 1 in which the liquid is an aqueous solution of sulfuric acid, the first solid is sodium chloride, the evolved gas is hydrogen chloride and the second solid is sodium bisulfate.
Claim 8
Dependent Claim
15 words
The process of claim 1 in which the second solid is soluble in the liquid.
Claim 9
Dependent Claim
35 words
The process of claim 1 in which the second solid is insoluble in the liquid and is maintained as a dispersed phase with the liquid by action of the evolving gas from the coreacting stream.
References Cited (Backward Citations)
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US2494588A
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US2517339A
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US3057702A
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US3063815A
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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) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |