Patent US3895097A successfully refreshed from Google Patents.
US3895097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reacting carbon, silicon or metal oxides and chlorine
Assignee: Dynamit Nobel AG
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Filing: 1973-03-21
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Granted: 1975-07-15
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Expires: 1993-03-21
Abstract
Abstract In a tubular reactor carrying a bed of solid material into which carbon electrodes project for heating the material upon passage of a current, the outside ends of said electrodes being connected to metallic conductors in turn connected to a supply of current, the invention involves pouring lead about the end of each electrode to effect improved contact between the electrode and its respective metallic conductor. The process involving use of such electrodes to react carbon with chlorine and the oxide of silicon or metals such as vanadium, titanium or zirconium is also covered.
Inventors
- 👤 Ferdinand Langenhoff
- 👤 Erich Termin
- 👤 Otto Bleh
- 👤 Rico Kolb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:33
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1222; B; B01; B01J; B01J8/00; B01J8/02; B01J8/0285; C01; C01G; C01G25/00; C01G25/04; C01G31/00; C01G31/04; C22B1/00; C22B1/02; C22B1/08; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00389; B01J2208/00415; B01J2208/00433; B01J2208/00477; B01J2208/00495; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
IN THE PROCESS FOR PRODUCING A METAL OR SILICON CHLORIDE BY REACTION BETWEEN A SOLID BED COMPRISING A MIXTURE OF AN OXIDE OF SAID METAL OR SILICON PLUS CARBON IN A TUBLAR REACTOR MADE OF REFACTORY CHLORINE-RESISTANT MATERIAL AND CHLORINE GAS SUPPLIED TO SAID REACTOR BY HEAT GENERATED THROUGH PASSAGE OF AN ELECTRIC CURRENT BETWEEN THE ENDS OF SPACED CARBON ELECTRODES LOCATED BELOW SAID BED, THE OTHER ENDS OF SAID ELECTRODES ESTENDING OUTSIDE SAID REACTOR AND BEING CONNECTED TO METALLIC CONDUCTORS WHICH IN TURN ARE CONNECTED TO A SUPPLY OF ELECTRIC CURRENT, THE IMPROVEMENT WHICH COMPRISES EFFECTING AN IMPROVED FLOW OF CURRENT TO SAID ELECTRODES BY CONNECTING EACH OF THEM TO ITS RESPECTIVE METALLIC CONDUCTOR THROUGH A BODY OF LEAD, AND SURROUNDING EACH ELECTRODE ALONG ITS ENTIRE LENGTH FROM A LOCATION INSIDE SAID REACTOR TOWARDS THE OUTSIDE ELECTRODE END WITH A GAS-TIGHT TUBE OF REFRACTORY ELECTRICALLY INSULATED MATERIAL TERMINATING INSIDE SAID BODY OF LEAD.
Claim 2
Dependent Claim
154 words
IN THE PROCESS FOR PRODUCING A METAL OR SILICON CHLORIDE BY REACTION BETWEEN A SOLID BED COMPRISING A MIXTURE OF AN OXIDE OF SAID METAL OR SILICON PLUS CARBON IN A TUBLAR REACTOR MADE OF REFACTORY CHLORINE-RESISTANT MATERIAL AND CHLORINE GAS SUPPLIED TO SAID REACTOR BY HEAT GENERATED THROUGH PASSAGE OF AN ELECTRIC CURRENT BETWEEN THE ENDS OF SPACED CARBON ELECTRODES LOCATED BELOW SAID BED, THE OTHER ENDS OF SAID ELECTRODES ESTENDING OUTSIDE SAID REACTOR AND BEING CONNECTED TO METALLIC CONDUCTORS WHICH IN TURN ARE CONNECTED TO A SUPPLY OF ELECTRIC CURRENT, THE IMPROVEMENT WHICH COMPRISES EFFECTING AN IMPROVED FLOW OF CURRENT TO SAID ELECTRODES BY CONNECTING EACH OF THEM TO ITS RESPECTIVE METALLIC CONDUCTOR THROUGH A BODY OF LEAD, AND SURROUNDING EACH ELECTRODE ALONG ITS ENTIRE LENGTH FROM A LOCATION INSIDE SAID REACTOR TOWARDS THE OUTSIDE ELECTRODE END WITH A GAS-TIGHT TUBE OF REFRACTORY ELECTRICALLY INSULATED MATERIAL TERMINATING INSIDE SAID BODY OF LEAD.
Claim 3
Dependent Claim
37 words
Process according to claim 1, wherein the space between the ends of the electrodes within said reactor is filled with spheroidal graphite, an inert porous layer separating the spheroidal graphite from the bed of solid reactants thereabove.
Claim 4
Dependent Claim
20 words
Process according to claim 1, wherein said oxide comprises an oxide of vanadium and the reaction product comprises vanadium chloride.
Claim 5
Dependent Claim
20 words
Process according to claim 1, wherein said oxide comprises an oxide of titanium and the reaction product comprises titanium chloride.
Claim 6
Dependent Claim
20 words
Process according to claim 1, wherein said oxide comprises an oxide of zirconium and the reaction product comprises zirconium chloride.
Claim 7
Dependent Claim
20 words
Process according to claim 1, wherein said oxide comprises an oxide of silicon and the reaction product comprises silicon chloride.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |