Waste water purification
Abstract
Abstract A process for purifying an aqueous stream contaminated with organic sulfonate salts having a carbon number of at least four and for producing purified oil and H2S which process comprises contacting the aqueous stream with an acid to convert the organic sulfonate salt to an organic sulfonic acid, extracting the organic sulfonic acid from the aqueous stream by contacting the aqueous stream with a C6+ hydrocarbon to obtain a contaminated C6+ hydrocarbon stream containing the organic sulfonic acid, and hydrofining the contaminated C6+ stream by contacting the stream, at a temperature between 450* and 900* F. and in the presence of added hydrogen gas, with a hydrofining catalyst. The process can also be applied to aqueous streams containing naphthenate salts.
Inventors
- 👤 Robert A Farnham
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |