Removal of chlorine and organic impurities from hydrochloric acid
Abstract
Abstract A CONTINOUS PROCESS FOR THE PURIFICATION OF HYDROCHLORIC ACID CONTAMINATED WITH BOTH CHLORICE AND ORGANIC MATERIAL WHICH COMPRISES CHARGING A STREAM OF THE CONTAMINATED ACID TO A STRIPPING ZONE, SIMULTANEOUSLY CHARGING A STREAM OF INERT GAS TO THE STRIPPING ZONE AND INTO CONTACT THEREIN WITH THE CONTAMINATED ACID TO EFFECT THE DESORPTIVE REMOVAL OF SUBSTANTIALLY ALL OF THE CHLORINE CONTAINED IN THE ACID, PASSING THE STRIPPED ACID EFFLUENT FROM THE STRIPPING ZONE TO AN ADSORPTION ZONE AND CONTACTING IT THEREIN WITH A SOLID ADSORBENT TO EFFECT THE ADSORPTIVE REMOVAL OF THE ORGANIC MATERIAL FROM THE STRIPPED ACID, AND RECOVERING THE ACID EFFLUENT FROM THE ADSORPTION ZONE WITH A SUBSTANTIALLY REDUCED QUANTITY OF BOTH CHLORINE AND ORGANIC MATERIAL.
Inventors
- 👤 Daniel R Marks
- 👤 Charles R Hanson
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |