US2690432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam lift in chemical processing system for producing alumina sols
Assignee: Standard Oil Co
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Filing: 1951-11-30
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Granted: 1954-09-28
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Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 Herder Marvin J Den
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:52
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0013; B01J13/00; B01J13/0004; C; C01; C01F; C01F7/00; C01F7/02; C01F7/42; C01F7/428; B01J2219/00; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1946
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
AN APPARATUS FOR CONDUCTING A CYCLIC CHEMICAL REACTION INVOLVING THE EVOLUTION OF SUBSTANTIAL AMOUNTS OF GAS AND THE PRODUCTION OF A LARGE VOLUME OF FOAM, THE IMPROVEMENT INCLUDING AN ELEVATED RESERVOIR OF LIQUID REACTANTS, A REACTION CHAMBER DISPOSED SUBSTANTIALLY BELOW THE MID POINT OF THE RESERVOIR, THE UPPER PORTION OF SAID RESERVOIR BEING OF SUBSTANTIALLY GREATER DIAMETER THAN THE LOWER PORTION OF SAID RESERVOIR, AN UPWARDLY EXTENDING TUBULAR CONDUIT COMMUNICATING WITH THE TOP OF THE REACTION CHAMBER AND DISCHARGING INTO SAID ENLARGED UPPER PORTION OF SAID RESERVOIR, A SECOND CONDUIT COMMUNICATING WITH THE BOTTOM OF SAID RESERVOIR AND THE BOTTOM OF SAID REACTION CHAMBER, AND A SOLIDS TRAP IN SAID SECOND CONDUIT ADJACENT THE INLET OF SAID CHAMBER, WHEREBY CIRCULATION OF LIQUID IS EFFECTED IN SERIES FROM THE RESERVOIR, DOWNWARDLY THROUGH THE CONDUIT, THROUGH THE TRAP, UPWARDLY THROUGH THE REACTION CHAMBER, AND UPWARDLY VIA THE FIRST CONDUIT INTO THE ENLARGED PORTION OF THE RESERVOIR.
Claim 2
Independent Claim
154 words
AN APPARATUS FOR CONDUCTING A CYCLIC CHEMICAL REACTION INVOLVING THE EVOLUTION OF SUBSTANTIAL AMOUNTS OF GAS AND THE PRODUCTION OF A LARGE VOLUME OF FOAM, THE IMPROVEMENT INCLUDING AN ELEVATED RESERVOIR OF LIQUID REACTANTS, A REACTION CHAMBER DISPOSED SUBSTANTIALLY BELOW THE MID POINT OF THE RESERVOIR, THE UPPER PORTION OF SAID RESERVOIR BEING OF SUBSTANTIALLY GREATER DIAMETER THAN THE LOWER PORTION OF SAID RESERVOIR, AN UPWARDLY EXTENDING TUBULAR CONDUIT COMMUNICATING WITH THE TOP OF THE REACTION CHAMBER AND DISCHARGING INTO SAID ENLARGED UPPER PORTION OF SAID RESERVOIR, A SECOND CONDUIT COMMUNICATING WITH THE BOTTOM OF SAID RESERVOIR AND THE BOTTOM OF SAID REACTION CHAMBER, AND A SOLIDS TRAP IN SAID SECOND CONDUIT ADJACENT THE INLET OF SAID CHAMBER, WHEREBY CIRCULATION OF LIQUID IS EFFECTED IN SERIES FROM THE RESERVOIR, DOWNWARDLY THROUGH THE CONDUIT, THROUGH THE TRAP, UPWARDLY THROUGH THE REACTION CHAMBER, AND UPWARDLY VIA THE FIRST CONDUIT INTO THE ENLARGED PORTION OF THE RESERVOIR.
Claim 3
Dependent Claim
111 words
IN THE METHOD FOR CONDUCTING A LIQUID-SOLID REACTION WHEREIN A LARGE VOLUME OF FOAM IS PRODUCED, THE IMPROVEMENT WHICH COMPRISED FLOWING THE REACTANT LIQUID UPWARDLY THROUGH A MASS OF PELLETED SOLID REACTANT UNDER THE HYDROSTATIC HEAD OF A COLUMN OF THE LIQUID TO PRODUCE A LIQUID REACTION PRODUCT AND EVOLVE A GAS, ACCUMULATING A COLUMN OF FOAM PRODUCED BY SAID GAS AND PRODUCT TO PROVIDE A LOW DENSITY FOAM LEG, DISCHARGING THE FOAM UPWARDLY UNDER HYDROSTATIC HEAD OF SAID LIQUID COLUMN INTO A DEFOAMING ZONE ABOVE SAID LIQUID COLUMN, SEPARATING EVOLVED GASES FROM THE FOAM TO RESOLVE THE LIQUID PHASE, AND COMMINGLING THE SAID LIQUID PHASE WITH SAID COLUMN FOR RECYCLE.
Claim 4
Dependent Claim
111 words
IN THE METHOD FOR CONDUCTING A LIQUID-SOLID REACTION WHEREIN A LARGE VOLUME OF FOAM IS PRODUCED, THE IMPROVEMENT WHICH COMPRISED FLOWING THE REACTANT LIQUID UPWARDLY THROUGH A MASS OF PELLETED SOLID REACTANT UNDER THE HYDROSTATIC HEAD OF A COLUMN OF THE LIQUID TO PRODUCE A LIQUID REACTION PRODUCT AND EVOLVE A GAS, ACCUMULATING A COLUMN OF FOAM PRODUCED BY SAID GAS AND PRODUCT TO PROVIDE A LOW DENSITY FOAM LEG, DISCHARGING THE FOAM UPWARDLY UNDER HYDROSTATIC HEAD OF SAID LIQUID COLUMN INTO A DEFOAMING ZONE ABOVE SAID LIQUID COLUMN, SEPARATING EVOLVED GASES FROM THE FOAM TO RESOLVE THE LIQUID PHASE, AND COMMINGLING THE SAID LIQUID PHASE WITH SAID COLUMN FOR RECYCLE.
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) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |