US3257375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of catalyst addition to polymerization reactions
Assignee: Phillips Petroleum Co
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Filing: 1960-09-06
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Granted: 1966-06-21
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Expires: 1980-09-06
Abstract
No abstract record available.
Inventors
- 👤 Donald D Norwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:12
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/18; C; C08; C08F; C08F10/00; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/0006; B01J2219/00063; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00191; B01J2219/00193; B01J2219/00195; B01J2219/002; B01J2219/00204; B01J2219/00209; B01J2219/00211; B01J2219/0022; B01J2219/00222; B01J2219/00227; B01J2219/00229; B01J2219/00231; Y; Y10; Y10S; Y10S159/00; Y10S159/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
THE METHOD FOR MAINTAINING THE REACTION TEMPERATURE AND PRODUCTION RATE SUBSTANTAILLY CONSTANT FOR A LIQUID PHASE CATALYZED REACTION WHEREIN CARALYST, DILUENT AND REACTANT FEED ARE INTROODUCED ITO A REACTION ZONE, EFFLUENT IS REMOVED FROM THE REACTION ZONE, AND THE HEAT OF REACTION IN THE REACTION ZONE IS REMOVED BY CIRCULATING A COOLANT MATERIAL THROUGH A CLOSED CURCUIT IN INDIRECT HEAT EXCHANGE WITH THE CONTENTS OF SAID ZONE, WHICH METHOD COMPRISES THE STEPS OF: MEASURING THE TEMPERATURE OF THE LIQUID PHASE OF SAID REACTION ZONE AND PRODUCING A FIRST SIGNAL REPRESENTATIVE OF REACTION ZONE TEMPERATURE, MEASURING THE TEMPERATURE OF SAID COOLANT PASSED TO SAID ZONE AND PRODUCING A SECOND SIGNAL REPRESENTATIVE OF THE COOLANT INFLUENCE TEMPERATURE, COMPARING SAID FIRST AND SECOND SIGNALS AND PRODUCING A CONTROL SIGNAL REPRESENTATIVE OF THE TEMPERATURE DIFFERENTIAL BETWEEN SAID REACTION ZONE TEMPERATURE AND COOLANT INFLUENT TEMPERATURE AS A MEASURE OF PRODUCTION RATE, AUTOMATICALY REGULATING THE RATE OF CATALYST ADDED TO SAID ZONE RESPONSIVE TO CHANGES IN THE MAGNITUDE OF SAID CONTROL SIGNAL SO AS TO MAINTAIN SAID PRODUCTION RATE SUBSTANTIALLY CONSTANT, AND AUTOMATICALY RESETTING THE TEMPERATUREOF COOLANT INFLUENT RESPONSIVE TO CHANGES IN THE MAGNITUDE OF SAID FIRST SIGNAL SO AS TO MAINTAIN SAID REACTION ZONE TEMPERATURE SUBSTANTIALLY CONSTANT.
Claim 2
Independent Claim
202 words
THE METHOD FOR MAINTAINING THE REACTION TEMPERATURE AND PRODUCTION RATE SUBSTANTAILLY CONSTANT FOR A LIQUID PHASE CATALYZED REACTION WHEREIN CARALYST, DILUENT AND REACTANT FEED ARE INTROODUCED ITO A REACTION ZONE, EFFLUENT IS REMOVED FROM THE REACTION ZONE, AND THE HEAT OF REACTION IN THE REACTION ZONE IS REMOVED BY CIRCULATING A COOLANT MATERIAL THROUGH A CLOSED CURCUIT IN INDIRECT HEAT EXCHANGE WITH THE CONTENTS OF SAID ZONE, WHICH METHOD COMPRISES THE STEPS OF: MEASURING THE TEMPERATURE OF THE LIQUID PHASE OF SAID REACTION ZONE AND PRODUCING A FIRST SIGNAL REPRESENTATIVE OF REACTION ZONE TEMPERATURE, MEASURING THE TEMPERATURE OF SAID COOLANT PASSED TO SAID ZONE AND PRODUCING A SECOND SIGNAL REPRESENTATIVE OF THE COOLANT INFLUENCE TEMPERATURE, COMPARING SAID FIRST AND SECOND SIGNALS AND PRODUCING A CONTROL SIGNAL REPRESENTATIVE OF THE TEMPERATURE DIFFERENTIAL BETWEEN SAID REACTION ZONE TEMPERATURE AND COOLANT INFLUENT TEMPERATURE AS A MEASURE OF PRODUCTION RATE, AUTOMATICALY REGULATING THE RATE OF CATALYST ADDED TO SAID ZONE RESPONSIVE TO CHANGES IN THE MAGNITUDE OF SAID CONTROL SIGNAL SO AS TO MAINTAIN SAID PRODUCTION RATE SUBSTANTIALLY CONSTANT, AND AUTOMATICALY RESETTING THE TEMPERATUREOF COOLANT INFLUENT RESPONSIVE TO CHANGES IN THE MAGNITUDE OF SAID FIRST SIGNAL SO AS TO MAINTAIN SAID REACTION ZONE TEMPERATURE SUBSTANTIALLY CONSTANT.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |