Patent US3877876A successfully refreshed from Google Patents.
US3877876A
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Carbon black apparatus
Assignee: Phillips Petroleum Co
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Filing: 1972-08-30
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Granted: 1975-04-15
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Expires: 1992-08-30
Abstract
Abstract A method and apparatus in which a first mixture of hydrocarbon feed and fuel-rich combustion gases is formed at a temperature just less than the decomposition of the feed and oxygen-rich combustion gases are then introduced to form a mixture in which the feed decomposes to form carbon black.
Inventors
- 👤 Paul J Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:53
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B01; B01J; B01J19/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
169 words
A LONGITUDINALLY DISPOSED TUBULAR CARBON BLACK REACTOR COMPRISING: A. A PREHEATING SECTION, THE INTERIOR OF WHICH HAS THE SHAPE OF A VENTURI; B. A FIRST MIXING SECTION COMPRISING A RESTRICTION PORTION IN OPEN AXIAL COMMUNICATION WITH SAID PREHEATING SECTION; C. A COMBUSTION SETION IN OPEN AXIAL COMMUNICATION WITH SAID FIRST MIXING SECTION; D. A SECOND MIXING SECTION IN OPEN AXIAL COMMUNICATION WITH SAID COMBUSTION SECTION, SAID SECOND MIXING SECTION HAVING A DECREASED DIAMETER COMPARED TO SAID COMBUSTION SECTION; E. A REACTION SECTION IN AXIAL AND OPEN COMMUNICATION WITH SAID SECOND MIXING SECTION; F. FIRST MEANS CONNECTED TO THE PREHEATING SECTION FOR THE INTRODUCTION OF HYDROCARBON FEED INTO SAID PREHEATING SECTION; G. SECOND MEANS CONNECTED TO SAID PREHEATING SECTION FOR TANGENTIAL INTRODUCTION OF FUEL-RICH HOT COMBUSTION GASES INTO SAID PREHEATING SECTION; H. THIRD MEANS CONNECTED TO SAID COMBUSTION SECTION FOR TANGENTIAL INTRODUCTION OF OXYGEN-RICH HOT COMBUSTION GASES INTO SAID COMBUSTION SECTION; AND I. FOURTH MEANS CONNECTED TO SAID REACTION SECTION FOR WITHDRAWAL OF THE CARBON BLACK FORMED FROM THE REACTOR.
Claim 2
Dependent Claim
169 words
A LONGITUDINALLY DISPOSED TUBULAR CARBON BLACK REACTOR COMPRISING: A. A PREHEATING SECTION, THE INTERIOR OF WHICH HAS THE SHAPE OF A VENTURI; B. A FIRST MIXING SECTION COMPRISING A RESTRICTION PORTION IN OPEN AXIAL COMMUNICATION WITH SAID PREHEATING SECTION; C. A COMBUSTION SETION IN OPEN AXIAL COMMUNICATION WITH SAID FIRST MIXING SECTION; D. A SECOND MIXING SECTION IN OPEN AXIAL COMMUNICATION WITH SAID COMBUSTION SECTION, SAID SECOND MIXING SECTION HAVING A DECREASED DIAMETER COMPARED TO SAID COMBUSTION SECTION; E. A REACTION SECTION IN AXIAL AND OPEN COMMUNICATION WITH SAID SECOND MIXING SECTION; F. FIRST MEANS CONNECTED TO THE PREHEATING SECTION FOR THE INTRODUCTION OF HYDROCARBON FEED INTO SAID PREHEATING SECTION; G. SECOND MEANS CONNECTED TO SAID PREHEATING SECTION FOR TANGENTIAL INTRODUCTION OF FUEL-RICH HOT COMBUSTION GASES INTO SAID PREHEATING SECTION; H. THIRD MEANS CONNECTED TO SAID COMBUSTION SECTION FOR TANGENTIAL INTRODUCTION OF OXYGEN-RICH HOT COMBUSTION GASES INTO SAID COMBUSTION SECTION; AND I. FOURTH MEANS CONNECTED TO SAID REACTION SECTION FOR WITHDRAWAL OF THE CARBON BLACK FORMED FROM THE REACTOR.
Claim 3
Dependent Claim
27 words
A carbon black reactor in accordance with claim 1 wherein said preheating section has openings for the introduction of reactants proximate to the throat of said venturi.
Claim 4
Dependent Claim
22 words
A carbon black reactor in accordance with claim 1 wherein said second mixing section is shaped in the form of a venturi.
Claim 5
Dependent Claim
21 words
A carbon black reactor in accordance with claim 1 wherein said first means are arranged for axial introduction of hydrocarbon feed.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |