Patent US2871194A successfully refreshed from Google Patents.
US2871194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of organic caustic solutions used in dethiolizing hydrocarbons
Assignee: Texaco Inc
•
Filing: 1955-07-20
•
Granted: 1959-01-27
•
Expires: 1975-07-20
Abstract
No abstract record available.
Inventors
- 👤 James L Meadows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:07
CPC Classifications
C; C10; C10G; C10G19/00; C10G19/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE METHOD OF REGENERATING AN ORGNIC SOLUTION OF AN ALKALI METAL HYDROXIDE EMPLOYED TO EFFECT REMOVAL OF MERCAPTANS FROM HYDROCARBONS THAT COMPRISES DIRECTING THE USED ORGANIC SOLUTION CONTAINING EXTRACTED MERCAPTANS, BUT FREE FROM AN ASSOCIATED OXIDATION CATALYST TO A REGENERATING TOWER CONTAINING A BED OF STAINLESS STEEL CONTACT MATERIAL HAVING CATALYTIC ACTIVITY FOR OXIDIZING MERCAPTANS TO DISULFIDES AT SUCH A RATE THAT SAID SOLUTION FLOWS IN DECENDING FILMS OVER SAID CONTACT MATERIAL WITHCUT FORMING A CONTINOUS LIQUID LEVEL IN SAID BED OF CONTACT MATERIAL PASSING A REGENERATING OXYGEN-CONTAINING GAS AT ATMOSPHERIC PRESSURE IN CONTACT WITH THE DOWNWARDLY FLOWING SOLUTION, MAINTAINING SAID REGENERATING GAS ESSENTIALLY IN THE CONTINUOUS PHASE, MAINTAING THE CONTACTING REGENERATING GAS AND SOLUTION AT REACTIVE TEMPERATURE FOR THE OXIDATION OF MERCAPTANS TO DISULFIDES, AND PASSING THE RESULTANT REGENERATED SOLUTION CONTAINING THE DISULFIDES TO A SEPARATING ZONE WHERIN THE DISULFIDES ARE SEPARATED FROM TH RENGERATED SOLUTION.
Claim 2
Independent Claim
147 words
THE METHOD OF REGENERATING AN ORGNIC SOLUTION OF AN ALKALI METAL HYDROXIDE EMPLOYED TO EFFECT REMOVAL OF MERCAPTANS FROM HYDROCARBONS THAT COMPRISES DIRECTING THE USED ORGANIC SOLUTION CONTAINING EXTRACTED MERCAPTANS, BUT FREE FROM AN ASSOCIATED OXIDATION CATALYST TO A REGENERATING TOWER CONTAINING A BED OF STAINLESS STEEL CONTACT MATERIAL HAVING CATALYTIC ACTIVITY FOR OXIDIZING MERCAPTANS TO DISULFIDES AT SUCH A RATE THAT SAID SOLUTION FLOWS IN DECENDING FILMS OVER SAID CONTACT MATERIAL WITHCUT FORMING A CONTINOUS LIQUID LEVEL IN SAID BED OF CONTACT MATERIAL PASSING A REGENERATING OXYGEN-CONTAINING GAS AT ATMOSPHERIC PRESSURE IN CONTACT WITH THE DOWNWARDLY FLOWING SOLUTION, MAINTAINING SAID REGENERATING GAS ESSENTIALLY IN THE CONTINUOUS PHASE, MAINTAING THE CONTACTING REGENERATING GAS AND SOLUTION AT REACTIVE TEMPERATURE FOR THE OXIDATION OF MERCAPTANS TO DISULFIDES, AND PASSING THE RESULTANT REGENERATED SOLUTION CONTAINING THE DISULFIDES TO A SEPARATING ZONE WHERIN THE DISULFIDES ARE SEPARATED FROM TH RENGERATED SOLUTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |