US3216833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentration of aqueous solutions by crystallization
Assignee: Phillips Petroleum Co
•
Filing: 1962-03-16
•
Granted: 1965-11-09
•
Expires: 1982-03-16
Abstract
No abstract record available.
Inventors
- 👤 Dwight L Mckay
- 👤 Ernest W Mellow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:51
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/90; A23B2/905; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/12; C; C12; C12H; C12H6/00; C12H6/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A PROCESS FOR CONCENTRATING ANAQUEOUS FOOD SOLUTION CONTAINING A COMPONENT MORE VOLATILE THAN WATER AND A COMPONENT LESS VOLATILE THAN WATER WHICH COMPRISES COOLING SAID SOLUTION UNTIL A SLURRY OF AT LEAST 20 WEIGHT PERCENT ICE CRYSTALS IN MOTHER LIQUOR IS FORMED; PASSING SAID SLURRY INTO A CONFINED ELONGATED PURIFICATON ZONE; MOVING SAID ICE CRYSTALS INA COMPACT MASS THROUGH SAID ZONE INTO A BODY OF CRYSTAL MELT IN A DOWNSTREAM PORTION OF SAID ZONE; DISPLACING MELT INTO THE ADVANCING DRYSTAL MASS; MELTING SAID ICE CRYSTALS TO FORM CRYSTAL MELT AT A RATE SUCH THAT SAID MELT CONTAINS A SUBSTANTIAL PORTION OF SAID VOLATILE COMPONENT AND A SUBSTANTIAL PORTION OF SAID LESS VOLATILE COMPONENT; SEPARATING MOTHER LIQUOR FROM SAID CRYSTALS BY WITHDRAWING MOTHER LIQUOR AS A CONCENTRATED SOLUTION FROM A MID-PORTION OF SAID CONFINED ZONE; PASSING SAID MELT TO A FRACTIONAL DISTILLATION ZONE; DISTILLING SAID MELT TO FORM AN OVERHEAD STREAM CONCENTRATED IN SAID VOLATILE COMPONENT, AN INTERMEDIATE WATER REJECT STREAM, AND A BOTTOM STREAM CONCENTRATED IN SAID
Claim 2
Dependent Claim
167 words
A PROCESS FOR CONCENTRATING ANAQUEOUS FOOD SOLUTION CONTAINING A COMPONENT MORE VOLATILE THAN WATER AND A COMPONENT LESS VOLATILE THAN WATER WHICH COMPRISES COOLING SAID SOLUTION UNTIL A SLURRY OF AT LEAST 20 WEIGHT PERCENT ICE CRYSTALS IN MOTHER LIQUOR IS FORMED; PASSING SAID SLURRY INTO A CONFINED ELONGATED PURIFICATON ZONE; MOVING SAID ICE CRYSTALS INA COMPACT MASS THROUGH SAID ZONE INTO A BODY OF CRYSTAL MELT IN A DOWNSTREAM PORTION OF SAID ZONE; DISPLACING MELT INTO THE ADVANCING DRYSTAL MASS; MELTING SAID ICE CRYSTALS TO FORM CRYSTAL MELT AT A RATE SUCH THAT SAID MELT CONTAINS A SUBSTANTIAL PORTION OF SAID VOLATILE COMPONENT AND A SUBSTANTIAL PORTION OF SAID LESS VOLATILE COMPONENT; SEPARATING MOTHER LIQUOR FROM SAID CRYSTALS BY WITHDRAWING MOTHER LIQUOR AS A CONCENTRATED SOLUTION FROM A MID-PORTION OF SAID CONFINED ZONE; PASSING SAID MELT TO A FRACTIONAL DISTILLATION ZONE; DISTILLING SAID MELT TO FORM AN OVERHEAD STREAM CONCENTRATED IN SAID VOLATILE COMPONENT, AN INTERMEDIATE WATER REJECT STREAM, AND A BOTTOM STREAM CONCENTRATED IN SAID
References Cited (Backward Citations)
USRE23810E
Cited
US1738275A
Cited
US2588337A
Cited
US2625505A
Cited
US2815288A
Cited
US2851368A
Cited
US2895835A
Cited
US2977234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |