Catholyte recirculation in diaphragm chlor-alkali cells
Abstract
Abstract THE CAUSTIC CONCENTRATION, AND SALT-CAUSTIC RATIO OF CATHOYLTE IS REQULATED BY ADDITION OF AN ALKALI METAL CHLORIDE AND/OR WATER TO WITHDRAWN CELL LIQUOR. THE TEMPERATURE OF THE CELL LIQUOR IS REGULATED AS DESIRED AND AN AMOUNT OF THE IDEALIZED CELL LIQUOR IS RETURNED TO THE CATHODE COMPARTMENT OF THE CELL WHICH IS APPROXIMATELY ONETHIRD TO TEN TIMES THE VOLUME OF CATHOLYTE WITHDRAWN IN THE ABSENCE OF RECIRCULATED CATHOLYTE. THE CELL LIQUOR TREATMENT AND RECYCLE MAY BE EMPLOYED IN CONJUNCTION WITH ANOLYTE RECYCLE OR AS AN INDEPENDENT MEANS FOR CELL CONTROL. CATHOLYTE RECIRCULATION INCREASES THE CELL EFFICIENCY AND/OR PRODUCES A CELL LIQUOR WITH A HIGHER CAUSTIC CONCENTRATION THAN IS OBTAINED CONVENTIONALLY.
Inventors
- 👤 J Currey
- 👤 W Ruthel
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |