US4137295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbide production using molten metals as heat source
Assignee: Individual
•
Filing: 1977-04-20
•
Granted: 1979-01-30
•
Expires: 1997-04-20
Abstract
Abstract A process for carrying out highly endothermic chemical reactions wherein a reactive metal or a compound thereof is reacted with a source of carbon to form a carbon-containing derivative, preferably a carbide, in the presence of a molten metal. The sensible heat of the molten metal supplies the energy necessary for the reaction.
Inventors
- 👤 Murry A. Tamers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:52
CPC Classifications
C; C10; C10H; C10H21/00; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0013; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/935; C01B32/942; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00121; B01J2219/00123
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
A process for producing carbides of reactive metals comprising: (a) forming, in a first reaction zone, a molten metal selected from the group consisting of iron and copper by combustion of a fuel, (b) passing the molten metal from the first reaction zone to a second reaction zone, (c) supplying to said second zone a reactive metal source selected from the group consisting of alkali metals and alkaline earth metals and the carbonates, oxides and hydroxides thereof and a carboneaceous fuel wherein the sensible heat of the molten metal supplies the heat required to react said reactive metal source with said fuel to form a carbide of the reactive metal, which floats on the surface of the molten metal and (d) separating the metal carbide and the molten metal.
Claim 2
Dependent Claim
129 words
A process for producing carbides of reactive metals comprising: (a) forming, in a first reaction zone, a molten metal selected from the group consisting of iron and copper by combustion of a fuel, (b) passing the molten metal from the first reaction zone to a second reaction zone, (c) supplying to said second zone a reactive metal source selected from the group consisting of alkali metals and alkaline earth metals and the carbonates, oxides and hydroxides thereof and a carboneaceous fuel wherein the sensible heat of the molten metal supplies the heat required to react said reactive metal source with said fuel to form a carbide of the reactive metal, which floats on the surface of the molten metal and (d) separating the metal carbide and the molten metal.
Claim 3
Dependent Claim
22 words
A process as defined in claim 1 wherein the reactive metal source is contacted with the source of carbon under non-oxidizing conditions.
Claim 4
Dependent Claim
18 words
A process as defined in claim 1 which includes the step of hydrolyzing the carbide to form acetylene.
Claim 5
Dependent Claim
13 words
A process as defined in claim 1 wherein the reactive metal is calcium.
Claim 6
Dependent Claim
39 words
A process as defined in claim 4 which includes the step of hydrolyzing calcium carbide, formed by reaction between the calcium oxide and the source of carbon, to form acetylene, and separating the acetylene thus formed from calcium hydroxide.
Claim 7
Dependent Claim
13 words
A process as defined in claim 1 wherein the reactive metal is lithium.
Claim 8
Dependent Claim
68 words
A process as defined in claim 6 which includes the step of hydrolyzing lithium carbide formed by reaction of lithium with the said fuel to form acetylene and lithium hydroxide, separating the acetylene, separating lithium hydroxide from the ash and recycling the lithium hydroxide to step (c) wherein the lithium hydroxide is first dehydrated to lithium oxide which then reacts with the carbonaceous fuel to form lithium carbide.
References Cited (Backward Citations)
US1051303A
Cited
US1019002A
Cited
US1072373A
Cited
US1775713A
Cited
US1719970A
Cited
US1996185A
Cited
US2535217A
Cited
US4009219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |