US3911064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for gas sparging into liquid
Assignee: Union Carbide Corp
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Filing: 1973-04-11
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Granted: 1975-10-07
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Expires: 1993-04-11
Abstract
Abstract A system for sparging gas into liquid as for example oxygen into waste liquid containing organic solids, wherein the gas is injected as at least one gas stream orbited around a common vertical axis to scribe a swept area bounded by circles of minimum and maximum radii, thereby forming small gas bubbles in the sparging zone.
Inventors
- 👤 John R Mcwhirter
- 👤 Jon G Albertsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:38
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; C02F3/205; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2331; B01F23/23311; B01F33/00; B01F33/50; B01F33/503; C02F3/26; B01F2215/00; B01F2215/04; B01F2215/0413; B01F2215/0436; B01F2215/045; B01F2215/0481; B01F23/23314; B01F27/00; B01F27/05; B01F27/11; B01F27/112; B01F27/1125; B01F27/11251; B01F27/113; B01F27/19; B01F27/192; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
222 words
A METHOD FOR SPARGING GAS INTO LIQUID COMPRISING THE STEPS OF INJECTING INTO LIQUID ONE GAS STREAM AT LINEAL VELOCITY OF AT LEAST 5 FEET PER SECOND AND AT VOLUMETRIC FLOW RATE OF AT LEAST 0.06 ACTUAL CUBIC FEET PER SECOND PER SQUARE FOOT OF HORIZONTAL AREA IN A SPARGING ZONE AS GAS BUBBLES IN A HORIZONTAL DIRECTION, AND SIMULTANEOUSLY ORBITING SAID GAS STREAM AT TANGENTIAL VELOCITY OF 18-26 FEET PER SECOND AND AT RATE SUCH THAT THE FACTOR N2D2 IS 30-70 FEET2 PER SECOND2 ABOUT A COMMON VERTICAL AXIS SO AS TO SCRIBE A SWEPT AREA WHEN PROJECTED ON THE HORIZONTAL PLANE BOUNDED BY CIRCLES OF MINIMUM AND MAXIMUM RADII, WHEREIN N IS THE SPEED OF SPARGER ARMS AND IMPELLER BLADE ROTATION (IN REVOLUTIONS PER SECOND), AND D IS THE DIAMETER OF THE CIRCLE WHICH IS CIRCUMSCRIBED BY THE TIPS OF THE SPARGER ARM (IN FEET), EACH PERPENDICULAR TO SAID VERTICAL AXIS, THE RATIO OF TOTAL CROSS-SECTIONAL AREA OF SAID GAS STREAM TO SAID SWEPT AREA BEING 0.006-0.06, THEREBY FORMING A MULTIPLICITY OF DISCRETE GAS BUBBLES OF 1/32-1/4 INCH IN SAID SPARGING ZONE, FLOWING SAID LIQUID AT LINEAL VELOCITY OF AT LEAST 2 FEET PER SECOND DOWNWARDLY THROUGH SAID SPARGING ZONE FOR GAS INJECTING THEREIN, AND DISCHARGING THE DOWNWARDLY FLOWING GAS BUBBLE-CONTAINING LIQUID FROM THE LOWER END OF SAID SPARGING ZONE.
Claim 2
Independent Claim
222 words
A METHOD FOR SPARGING GAS INTO LIQUID COMPRISING THE STEPS OF INJECTING INTO LIQUID ONE GAS STREAM AT LINEAL VELOCITY OF AT LEAST 5 FEET PER SECOND AND AT VOLUMETRIC FLOW RATE OF AT LEAST 0.06 ACTUAL CUBIC FEET PER SECOND PER SQUARE FOOT OF HORIZONTAL AREA IN A SPARGING ZONE AS GAS BUBBLES IN A HORIZONTAL DIRECTION, AND SIMULTANEOUSLY ORBITING SAID GAS STREAM AT TANGENTIAL VELOCITY OF 18-26 FEET PER SECOND AND AT RATE SUCH THAT THE FACTOR N2D2 IS 30-70 FEET2 PER SECOND2 ABOUT A COMMON VERTICAL AXIS SO AS TO SCRIBE A SWEPT AREA WHEN PROJECTED ON THE HORIZONTAL PLANE BOUNDED BY CIRCLES OF MINIMUM AND MAXIMUM RADII, WHEREIN N IS THE SPEED OF SPARGER ARMS AND IMPELLER BLADE ROTATION (IN REVOLUTIONS PER SECOND), AND D IS THE DIAMETER OF THE CIRCLE WHICH IS CIRCUMSCRIBED BY THE TIPS OF THE SPARGER ARM (IN FEET), EACH PERPENDICULAR TO SAID VERTICAL AXIS, THE RATIO OF TOTAL CROSS-SECTIONAL AREA OF SAID GAS STREAM TO SAID SWEPT AREA BEING 0.006-0.06, THEREBY FORMING A MULTIPLICITY OF DISCRETE GAS BUBBLES OF 1/32-1/4 INCH IN SAID SPARGING ZONE, FLOWING SAID LIQUID AT LINEAL VELOCITY OF AT LEAST 2 FEET PER SECOND DOWNWARDLY THROUGH SAID SPARGING ZONE FOR GAS INJECTING THEREIN, AND DISCHARGING THE DOWNWARDLY FLOWING GAS BUBBLE-CONTAINING LIQUID FROM THE LOWER END OF SAID SPARGING ZONE.
Claim 3
Dependent Claim
211 words
APPARATUS FOR SPARGING GAS INTO LIQUID COMPRISING: A. PRESSURIZED GAS SUPPLY MEANS, B. A VERTICALLY ORIENTED ROTATABLE SHAFT HAVING A PASSAGEWAY THEREIN JOINED AT ITS UPPER END TO SAID GAS SUPPLY MEANS, C. AN AXIAL FLOW IMPELLER FIXEDLY ATTACHED TO SAID ROTATABLE SHAFT WITH OUTWARDLY EXTENDING BLADES INTERMEDIATE SAID UPPER END AND THE SHAFT LOWER END ALINGED TO FLOW LIQUID DOWNWARDLY, D. A MULTIPLICITY OF GAS SPARGING ARMS FIXEDLY ATTACHED TO SAID ROTATABLE SHAFT AT ITS LOWER END, EACH EXTENDING RADIALLY OUTWARDLY FROM AND SPACED AROUND THE SHAFT WITH THE DIAMETER SCRIBED BY THE ARM TIPS 0.8 - 1.1 TIMES THE DIAMETER SCRIBED BY THE IMPELLER BLADE TIPS AND EACH ARM HAVING AN INTERIOR PASSAGEWAY COMMUNICATING WITH THE ROTATABLE SHAFT PASSAGEWAY, AND A SINGLE SLOT TYPE OPENING IN PART OF EACH ARM END AND EXTENDING THEREFROM ALONG THE TRAILING EDGE TOWARD THE INNER END SO AS TO SCRIBE WHEN PROJECTED ON THE HORIZONTAL PLANE A SWEPT AREA BOUNDED BY THE CIRCLES OF MINIMUM AND MAXIMUM RADII, SAID SLOTTYPE OPENINGS BEING PROVIDED IN SUFFICIENT SIZE THAT THE RATIO OF TOTAL CROSS-SECTIONAL AREA OF SAID OPENINGS TO SAID SWEPT AREA IS 0.006 - 0.06, AND E. A MULTIPLICITY OF VERTICAL RADIAL BAFFLES AT SPACED INTERVALS AROUND THE LOWER END OF SAID ROTATABLE SHAFT.
Claim 4
Dependent Claim
211 words
APPARATUS FOR SPARGING GAS INTO LIQUID COMPRISING: A. PRESSURIZED GAS SUPPLY MEANS, B. A VERTICALLY ORIENTED ROTATABLE SHAFT HAVING A PASSAGEWAY THEREIN JOINED AT ITS UPPER END TO SAID GAS SUPPLY MEANS, C. AN AXIAL FLOW IMPELLER FIXEDLY ATTACHED TO SAID ROTATABLE SHAFT WITH OUTWARDLY EXTENDING BLADES INTERMEDIATE SAID UPPER END AND THE SHAFT LOWER END ALINGED TO FLOW LIQUID DOWNWARDLY, D. A MULTIPLICITY OF GAS SPARGING ARMS FIXEDLY ATTACHED TO SAID ROTATABLE SHAFT AT ITS LOWER END, EACH EXTENDING RADIALLY OUTWARDLY FROM AND SPACED AROUND THE SHAFT WITH THE DIAMETER SCRIBED BY THE ARM TIPS 0.8 - 1.1 TIMES THE DIAMETER SCRIBED BY THE IMPELLER BLADE TIPS AND EACH ARM HAVING AN INTERIOR PASSAGEWAY COMMUNICATING WITH THE ROTATABLE SHAFT PASSAGEWAY, AND A SINGLE SLOT TYPE OPENING IN PART OF EACH ARM END AND EXTENDING THEREFROM ALONG THE TRAILING EDGE TOWARD THE INNER END SO AS TO SCRIBE WHEN PROJECTED ON THE HORIZONTAL PLANE A SWEPT AREA BOUNDED BY THE CIRCLES OF MINIMUM AND MAXIMUM RADII, SAID SLOTTYPE OPENINGS BEING PROVIDED IN SUFFICIENT SIZE THAT THE RATIO OF TOTAL CROSS-SECTIONAL AREA OF SAID OPENINGS TO SAID SWEPT AREA IS 0.006 - 0.06, AND E. A MULTIPLICITY OF VERTICAL RADIAL BAFFLES AT SPACED INTERVALS AROUND THE LOWER END OF SAID ROTATABLE SHAFT.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |