Patent US2124986A successfully refreshed from Google Patents.
US4094777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing mercury from a gas or a liquid by absorption on a copper sulfide containing solid mass
Assignee: IFP Energies nouvelles
•
Filing: 1976-12-16
•
Granted: 1978-06-13
•
Expires: 1996-12-16
Abstract
Abstract Mercury is removed from a gas or a liquid by absorption on a solid mass, which mass contains a carrier and sulfided copper.
Inventors
- 👤 Andre Sugier
- 👤 Florentino LA Villa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:12
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/103; B01D; B01D15/00; B01D53/00; B01D53/02; B01D53/34; B01D53/46; B01D53/64; B01J20/0203; B01J20/0233; B01J20/0237; B01J20/0274; B01J20/0285; B01J20/06; B01J20/08; B01J20/28; B01J20/28054; B01J20/28057; B01J20/30; B01J20/3007; B01J20/3028; B01J20/3078; B01J20/3085; B01J20/32; B01J20/3202; B01J20/3204; B01J20/3231; B01J20/3234; B01J20/3236; B01J20/34; B01J20/3433; B01J20/345; B01J20/3458; C; C07; C07C; C07C7/00; C07C7/148; B01D2253/00; B01D2253/10; B01D2253/112; B01D2253/1128; B01J2220/00; B01J2220/50; B01J2220/56; Y; Y10; Y10S; Y10S95/00; Y10S95/90
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
99 words
In a process for the elimination of mercury present in a gas or liquid comprising contacting the liquid or gas with an absorption mass in a fixed bed, the improvement wherein the absorption mass consists essentially of: (a) a solid dispersant or support selected from the group formed by silica, alumina, silica-alumina, silicates, aluminates and silico-aluminates, (b) copper whereof at least 30% is in the sulphide state and wherein the copper sulphide proportion in the absorption mass, calculated as copper, represents 2 to 65% of the weight of the mass, and (c) 0-5% of silver in the sulfide state.
Claim 2
Dependent Claim
99 words
In a process for the elimination of mercury present in a gas or liquid comprising contacting the liquid or gas with an absorption mass in a fixed bed, the improvement wherein the absorption mass consists essentially of: (a) a solid dispersant or support selected from the group formed by silica, alumina, silica-alumina, silicates, aluminates and silico-aluminates, (b) copper whereof at least 30% is in the sulphide state and wherein the copper sulphide proportion in the absorption mass, calculated as copper, represents 2 to 65% of the weight of the mass, and (c) 0-5% of silver in the sulfide state.
Claim 3
Dependent Claim
12 words
A process according to claim 1 in which the support is alumina.
Claim 4
Dependent Claim
32 words
A process according to claim 1, in which the absorption mass results from the mixture of a copper hydroxide or salt with said support followed by shaping and sulphurization of the latter.
Claim 5
Dependent Claim
23 words
A process according to claim 3, in which the absorption mass results from a mixture of a basic copper carbonate with said support.
Claim 6
Dependent Claim
16 words
A process according to claim 3, in which sulphurization is performed by means of hydrogen sulphide.
Claim 7
Dependent Claim
28 words
A process according to claim 3, in which sulphurization is performed with an aqueous solution of sodium sulphide followed by washing out more than 95% of the sodium.
Claim 8
Dependent Claim
31 words
A process according to claim 1, in which the absorption mass results from the impregnation of a support by means of a solution of a soluble copper compound, followed by sulphurization.
Claim 9
Dependent Claim
21 words
A process according to claim 7, in which said solution contains both a soluble copper compound and a soluble silver compound.
Claim 10
Dependent Claim
28 words
A process according to claim 7, in which sulphurization is performed with an aqueous solution of sodium sulphide followed by washing out more than 95% of the sodium.
Claim 11
Dependent Claim
16 words
A process according to claim 7, in which sulphurization is performed by means of hydrogen sulphide.
Claim 12
Dependent Claim
30 words
A process according to claim 1, in which the proportion of copper sulphide in the absorption mass, calculated as copper, represents 5 to 50% of the weight of the mass.
Claim 13
Dependent Claim
22 words
A process according to claim 1, further comprising regeneration of the absorption mass by heating the mass following a mercury absorption stage.
Claim 14
Dependent Claim
22 words
A process according to claim 12, in which the absorption mass is regenerated by heating in the presence of a light hydrocarbon.
Claim 15
Dependent Claim
15 words
A process according to claim 13, wherein steam is in mixture with said light hydrocarbon.
Claim 16
Dependent Claim
32 words
A process according to claim 1, in which a natural gas containing a major proportion of methane, a minor proportion of C 5 hydrocarbons and a minor proportion of mercury is treated.
Claim 17
Dependent Claim
22 words
A process according to claim 1, in which the absorption mass is activated by heating in the presence of a light hydrocarbon.
Claim 18
Dependent Claim
15 words
A process according to claim 16, wherein steam is in mixture with said light hydrocarbon.
Claim 19
Dependent Claim
21 words
A process according to claim 1, wherein the mass has an average pure diameter of at least equal to 100 A.
Claim 20
Dependent Claim
18 words
A process according to claim 1, wherein the mass has a surface area of 20-250 m 2 /g.
Claim 21
Dependent Claim
18 words
A process according to claim 1, wherein at least 80% of the copper is in the sulfide state.
Claim 22
Dependent Claim
19 words
A process according to claim 1, wherein natural gas is treated at a rate of 4,000-20,000 V. V. H.
References Cited (Backward Citations)
US3055824A
Cited
US3510265A
Cited
US3695838A
Cited
US3755161A
Cited
US3873581A
Cited
US3769205A
Cited
US3841102A
Cited
US3989623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |