US3202477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing alkali metal carbonate
Assignee: Diamond Shamrock Corp
•
Filing: 1962-01-18
•
Granted: 1965-08-24
•
Expires: 1982-01-18
Abstract
No abstract record available.
Inventors
- 👤 Jr John E Loeffler
- 👤 Robert A Springer
- 👤 Ernest L Bolick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:11
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A METHOD OF PRODUCING AN ALKALI METAL CARBONATE COMPRISING THE STEPS OF FORMING DISCRETE PARTICLES OF A SOLUTION OF AN ALKALI METAL HYDROXIDE IN A REACTION CHAMBER, INJECTING A HEATED GAS CONTAINING CARBON DIOXIDE INTO SAID CHAMBER, THE AMOUNT OF CARBON DIOXIDE IN SAID CHAMBER BEING IN EXCESS OF THAT REQUIRED TO REACT WITH THE ALKALI METAL HYDROXIDE IN SAID PARTICLES OF SAID SOLUTION, ALLOWING PARTICLES OF SAID SOLUTION TO MOVE GENERALLY CONCURRENTLY WITH THE MOVEMENT OF SAID GAS IN SAID CHAMBER, MAINTAINING THE AVERAGE MINIMUM REACTION TEMPERATURE IN SAID CHAMBER ABOVE ABOUT 200*F., MAINTAINING THE RELATIVE HUMIDITY OF SAID GAS SUCH THAT WATER IS VAPORIZED FROM SAID SOLUTION, WHEREBY THE ALKALI METAL HYDROXIDE IS REACTED WITH THE CARBON DIOXIDE AND IS CONVERTED TO THE COR RESPONDING ALKALI METAL CARBONATE IN A DRY PARTICULATE FORM, AND REMOVING SAID DRY PARTICULATE ALKALI METAL CARBONATE AND THE REMAINDER OF SAID GAS FROM SAID CHAMBER.
Claim 2
Independent Claim
152 words
A METHOD OF PRODUCING AN ALKALI METAL CARBONATE COMPRISING THE STEPS OF FORMING DISCRETE PARTICLES OF A SOLUTION OF AN ALKALI METAL HYDROXIDE IN A REACTION CHAMBER, INJECTING A HEATED GAS CONTAINING CARBON DIOXIDE INTO SAID CHAMBER, THE AMOUNT OF CARBON DIOXIDE IN SAID CHAMBER BEING IN EXCESS OF THAT REQUIRED TO REACT WITH THE ALKALI METAL HYDROXIDE IN SAID PARTICLES OF SAID SOLUTION, ALLOWING PARTICLES OF SAID SOLUTION TO MOVE GENERALLY CONCURRENTLY WITH THE MOVEMENT OF SAID GAS IN SAID CHAMBER, MAINTAINING THE AVERAGE MINIMUM REACTION TEMPERATURE IN SAID CHAMBER ABOVE ABOUT 200*F., MAINTAINING THE RELATIVE HUMIDITY OF SAID GAS SUCH THAT WATER IS VAPORIZED FROM SAID SOLUTION, WHEREBY THE ALKALI METAL HYDROXIDE IS REACTED WITH THE CARBON DIOXIDE AND IS CONVERTED TO THE COR RESPONDING ALKALI METAL CARBONATE IN A DRY PARTICULATE FORM, AND REMOVING SAID DRY PARTICULATE ALKALI METAL CARBONATE AND THE REMAINDER OF SAID GAS FROM SAID CHAMBER.
References Cited (Backward Citations)
US2780520A
Cited
GB776331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |