US2730486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange removal of mercaptans from petroleum
Assignee: ExxonMobil Oil Corp
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Filing: 1951-09-19
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Granted: 1956-01-10
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Expires: 1971-09-19
Abstract
No abstract record available.
Inventors
- 👤 Harry L Coonradt
- 👤 Wilbur K Leaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:21
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; B; B01; B01J; B01J49/00; B01J49/05; B01J49/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
34 words
A METHOD FOR REGENERATING ANION EXCHANGE MATERIAL EXHAUSTED WITH MERCAPTANS WHICH COMPRISES CONTACTING ANION EXCHANGE MATERIAL EXHAUSTED WITH MERCAPTANS WITH A SOLUTION OF ALKALI METAL HYDROXIDE WHILST PASSING FREE OXYGEN-CONTAINING GAS THROUGH SAID SOLUTION.
Claim 2
Independent Claim
34 words
A METHOD FOR REGENERATING ANION EXCHANGE MATERIAL EXHAUSTED WITH MERCAPTANS WHICH COMPRISES CONTACTING ANION EXCHANGE MATERIAL EXHAUSTED WITH MERCAPTANS WITH A SOLUTION OF ALKALI METAL HYDROXIDE WHILST PASSING FREE OXYGEN-CONTAINING GAS THROUGH SAID SOLUTION.
Claim 3
Independent Claim
86 words
A METHOD FOR REMOVING MERCAPTANS FROM HYDROCARBONS WHICH COMPRISES CONTACTING HYDROCARBONS MIXED WITH MERCAPTANS WITH ANIONS EXCHANGE MATERIAL, SEPARATING ANION EXCHANGE MATERIAL FROM TREATED HYDROCARBONS, CONTACTING SAID SEPARATED ANION EXCHANGE MATERIAL WITH A BASIC REGENERANT SOLUTION WHILST PASSING GAS SUBSTANTIALLY FREE FROM CARBON DIOXIDE AND CONTAINING FREE OXYGEN THROUGH SAID REGENERANT SOLUTION TO CONVERT MERCAPTANS TO POLYSULFIDES, SEPARATING REGENERATED REGENERANT SOLUTION FROM REGENERATED ANION EXCHANGE MATERIAL, WASHING SAID SEPARATED ANION EXCHANGE MATERIAL WITH WATER, AND CONTACTING HYDROCARBONS ADMIXED WITH MERCAPTANTS WITH SAID REGENERATED ANION EXCHANGE MATERIAL.
Claim 4
Independent Claim
86 words
A METHOD FOR REMOVING MERCAPTANS FROM HYDROCARBONS WHICH COMPRISES CONTACTING HYDROCARBONS MIXED WITH MERCAPTANS WITH ANIONS EXCHANGE MATERIAL, SEPARATING ANION EXCHANGE MATERIAL FROM TREATED HYDROCARBONS, CONTACTING SAID SEPARATED ANION EXCHANGE MATERIAL WITH A BASIC REGENERANT SOLUTION WHILST PASSING GAS SUBSTANTIALLY FREE FROM CARBON DIOXIDE AND CONTAINING FREE OXYGEN THROUGH SAID REGENERANT SOLUTION TO CONVERT MERCAPTANS TO POLYSULFIDES, SEPARATING REGENERATED REGENERANT SOLUTION FROM REGENERATED ANION EXCHANGE MATERIAL, WASHING SAID SEPARATED ANION EXCHANGE MATERIAL WITH WATER, AND CONTACTING HYDROCARBONS ADMIXED WITH MERCAPTANTS WITH SAID REGENERATED ANION EXCHANGE MATERIAL.
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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |