US3215495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for preparing hydrogen cyanide
Assignee: EIDP Inc
•
Filing: 1962-01-23
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Granted: 1965-11-02
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Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 William R Jenks
- 👤 Arthur W Andresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:31
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/02; C01C3/0208; C01C3/0212; C01C3/022; C01C3/0225; B; B01; B01J; B01J8/00; B01J8/02; C01C3/0216; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00168; B01J2208/00212; B01J2208/00477; B01J2208/00495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN THE PROCESS FOR PRODUCING HYDROGEN CYANIDE WHEREIN A REACTANT MIXTURE COMPRISING AMMONIA, OXYGEN AND A HYDROCARBONGAS IS REACTED IN A BED CONTAINING A PLATINUM METAL GAUZE CATALYST, THE IMPROVEMENT FOR CONTROLLING REACTION AND PREVENTING HEAT LOSS BY RADIATION FROM THE SURFACE OF SAID GAUZE CATALYST ADAPTED TO FACE THE FLOW OF THE SAID REACTANT MIXTURE BY THE STEPS COMPRISING: (A) ADJUSTING THE COMPONENTS OF SAID REACTANT MIXTURE SO THAT THE PROPORTION OF EXCESS OXYGEN AND HYDROCARBON OVER THAT THEORETICALLY REQUIRED FOR THE CONVERSION OF AMMONIA TO HYDROGEN CYANIDE IN THE SYNTHESIS REACTION IS SUCH THAT THE REACTION TEMPERATURE WILL FALL IN THE RANGE 1000* TO 1200*C. UNDER PROCESS CONDITIONS, (B) CONDUCTING THE SAID REACTANT MIXTURE INTO A REACTION CHAMBER AND IMMEDIATELY THEREAFTER PASSING SAID MIXTURE THROUGH A RADIATION SCREEN COMPRISING A LAYER OF REFRACTORY PARTICLES SUPPORTED BY A LAYER OF REFRACTORY FIBER IN THE FIRECT CONTACT WITH THE SAID GAUZE CATALYST,
Claim 2
Dependent Claim
152 words
IN THE PROCESS FOR PRODUCING HYDROGEN CYANIDE WHEREIN A REACTANT MIXTURE COMPRISING AMMONIA, OXYGEN AND A HYDROCARBONGAS IS REACTED IN A BED CONTAINING A PLATINUM METAL GAUZE CATALYST, THE IMPROVEMENT FOR CONTROLLING REACTION AND PREVENTING HEAT LOSS BY RADIATION FROM THE SURFACE OF SAID GAUZE CATALYST ADAPTED TO FACE THE FLOW OF THE SAID REACTANT MIXTURE BY THE STEPS COMPRISING: (A) ADJUSTING THE COMPONENTS OF SAID REACTANT MIXTURE SO THAT THE PROPORTION OF EXCESS OXYGEN AND HYDROCARBON OVER THAT THEORETICALLY REQUIRED FOR THE CONVERSION OF AMMONIA TO HYDROGEN CYANIDE IN THE SYNTHESIS REACTION IS SUCH THAT THE REACTION TEMPERATURE WILL FALL IN THE RANGE 1000* TO 1200*C. UNDER PROCESS CONDITIONS, (B) CONDUCTING THE SAID REACTANT MIXTURE INTO A REACTION CHAMBER AND IMMEDIATELY THEREAFTER PASSING SAID MIXTURE THROUGH A RADIATION SCREEN COMPRISING A LAYER OF REFRACTORY PARTICLES SUPPORTED BY A LAYER OF REFRACTORY FIBER IN THE FIRECT CONTACT WITH THE SAID GAUZE CATALYST,
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |