US4717399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for adsorbing mercury from natural gas
Assignee: Mobil Oil AS
•
Filing: 1986-12-22
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Granted: 1988-01-05
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Expires: 2006-12-22
Abstract
Abstract Hydrocarbon gases containing trace quantities of mercury are treated to remove the mercury by contacting the gases with a porous bed of aluminum which has been activated by contacting it with an aqueous solution of a soluble mercuric salt and subsequent drying of the activated bed in a non-oxidizing atmosphere.
Inventors
- 👤 Costandi A. Audeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:23
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/14833; C07C7/14841; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/64
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
A process for removing trace quantities of mercury from a hydrocarbon gas containing said trace quantities comprising: (a) contacting a porous mass of aluminum metal with an aqueous solution of a soluble mercuric salt; (b) drying said porous mass with a non-oxidizing gas at a temperature between about 45° and about 95° C.; and (c) subsequently contacting said porous mass with said hydrocarbon gas containing trace quantities of mercury, thereby absorbing or amalgamating said mercury onto said mass of aluminum metal.
Claim 2
Dependent Claim
81 words
A process for removing trace quantities of mercury from a hydrocarbon gas containing said trace quantities comprising: (a) contacting a porous mass of aluminum metal with an aqueous solution of a soluble mercuric salt; (b) drying said porous mass with a non-oxidizing gas at a temperature between about 45° and about 95° C.; and (c) subsequently contacting said porous mass with said hydrocarbon gas containing trace quantities of mercury, thereby absorbing or amalgamating said mercury onto said mass of aluminum metal.
Claim 3
Dependent Claim
28 words
The process of claim 1 in which the concentration of the soluble mercuric salt in the aqueous solution is between about 0.001 and about 0.5 grams per liter.
Claim 4
Dependent Claim
45 words
The process of claim 1 wherein the porous mass of aluminum metal is contacted with said aqueous solution for a period of between about 0.25 and about 1 hour at a temperature between about 65° and about 180° F. and a pressure of one atmosphere.
References Cited (Backward Citations)
US3619176A
Cited
US3679396A
Cited
US3849537A
Cited
US3857704A
Cited
US3786619A
Cited
DE2135086A1
Cited
US3814799A
Cited
US3888124A
Cited
AU480879A
Cited
FR2310795A1
Cited
US4233274A
Cited
US4094777A
Cited
US4230486A
Cited
US4419107A
Cited
US4591490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |