US3654447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic instrumentation system for catalytic cyanogen chloride trimerization
Assignee: Novartis Corp
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Filing: 1970-04-23
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Granted: 1972-04-04
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Expires: 1990-04-23
Abstract
Abstract Cyanogen chloride is trimerized to form cyanuric chloride in an exothermic reaction performed in a reaction chamber by passing the cyanogen chloride through tubes packed with an activated carbon catalyst. A plurality of spaced temperature responsive transducers are disposed within the reaction chamber, and supply analog output temperature information which is converted to digital form and registered in a digital computer. The computer determines the continuous temperature-reaction distance function by employing a regression program to fix coefficients for a predetermined temperature distribution function employing linear, square, and exponential component terms. Information characterizing the operational status of the reaction, such as the peak temperature value and its location, is determined from the temperature function.
Inventors
- 👤 Claude G Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:32
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/28
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
30 words
A combination as in claim 1 further comprising means for determining the peak temperature value of said temperature distribution function, and means for storing said peak value in said computer.
Claim 2
Dependent Claim
32 words
A combination as in claim 2 further comprising means for determining the distance along said reaction length where said peak temperature value occurs, and means for storing said distance in said computer.
Claim 3
Dependent Claim
27 words
A combination as in claim 3 further comprising means for controlling said trimerization reaction responsive to the rate of travel of said peak temperature along said chamber.
Claim 4
Dependent Claim
34 words
A combination as in claim 1 further comprising means for determining the length along said reaction length along which said temperature exceeds a predetermined level, and means for storing said length in said computer.
Claim 5
Dependent Claim
27 words
A combination as in claim 5 further comprising means for controlling said trimerization reaction responsive to the rate of travel of said peak temperature along said chamber.
Claim 6
Dependent Claim
13 words
A combination as in claim 1 wherein said predetermined temperature distribution Y(x) comprises
Claim 7
Dependent Claim
25 words
A combination as in claim 7 further comprising means for determining xmax, xml1 and xmp1, and for storing these values in said computer memory means.
Claim 8
Dependent Claim
30 words
A combination as in claim 8 further comprising means for determining the peak temperature value of said temperature distribution function, and means for storing said peak value in said computer.
Claim 9
Dependent Claim
32 words
A combination as in claim 9 further comprising means for determining the distance along said reaction length where said peak temperature value occurs, and means for storing said distance in said computer.
Claim 10
Dependent Claim
34 words
A combination as in claim 8 further comprising means for determining the length along said reaction length along which said temperature exceeds a predetermined level, and means for storing said length in said computer.
Claim 11
Dependent Claim
39 words
A combination as in claim 1 further comprising means for deriving parameters from said temperature distribution function characterizing the operational status of said trimerization reaction, and means responsive to the value of said derived parameters for controlling said reaction.
Claim 12
Dependent Claim
26 words
A combination as in claim 12 wherein said controlling means includes valve means connected to said chamber input port, and means for actuating said valve means.
Claim 13
Independent Claim
122 words
A method for monitoring the operational status of a trimerization process wherein cyanogen chloride is passed through a carbon catalyst disposed along a reaction length to form cyanuric chloride, comprising measuring the temperatures obtaining at spaced points along said reaction length, registering said measured temperature values in a digital computer, storing a predetermined continuous temperature distribution having at least one undetermined coefficient therein, said distribution being a function of reaction length, computing said distribution function at spaced points along the reaction length corresponding to the locations where the reaction temperature is measured, storing these computed values in said computer, and determining said initially undetermined coefficient from said stored values of said reaction length dependent functions to completely specify said temperature distribution function.
Claim 14
Dependent Claim
18 words
The method as in claim 14 further comprising the step of determining the peak temperature of said distribution.
Claim 15
Dependent Claim
20 words
The method as in claim 15 further comprising determining the point along said reaction length where said peak temperature occurs.
Claim 16
Dependent Claim
26 words
The method as in claim 16 further comprising the step of determining the distance along said reaction length where said temperature distribution exceeds a predetermined level.
Claim 17
Dependent Claim
19 words
The method as in claim 14 wherein said distribution function computing operation includes the steps of computing the functions
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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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |