US3607057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black process and reactor
Assignee: Phillips Petroleum Co
•
Filing: 1968-05-23
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Granted: 1971-09-21
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Expires: 1988-05-23
Abstract
Abstract Process and apparatus for the production of carbon black wherein an oxygen-containing gas, with or without fuel, is introduced into an axial zone of a reactor and passed through a diametrally restricted section of said zone wherein it is commingled with hydrocarbon feed, the mixture passed into at least one stepped zone having a cross-sectional area greater than the crosssectional area of said axial zone wherein it is expanded, the expanded mixture passed into a combustion zone and contacted therein with combustion gases, and the resulting mass passed into a reaction zone wherein the hydrocarbon feed is pyrolytically decomposed into carbon black.
Inventors
- 👤 Eulas W Henderson
- 👤 Robert E Dollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:19
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01; C01P; C01P2006/00; C01P2006/12; C01P2006/19
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
The process as defined in claim 1, wherein the hydrocarbon feed is introduced into the axial zone upstream of the diametrally restricted section.
Claim 2
Dependent Claim
57 words
The process as defined in claim 1 in which the reactant mass from the axial section is expanded by passage into a plurality of stepped zones contiguously positioned between said axial section and said combustion section, each of said stepped sections being of substantially uniform diameter and having a greater diameter than the intermediate preceding stepped section.
Claim 3
Dependent Claim
36 words
The process as defined in claim 3 in which said first gas is accelerated in passing through said restricted portion of the axial zone to a velocity of 1.04 to about 1.8 times said first velocity.
Claim 4
Dependent Claim
21 words
The process as defined in claim 3 in which the reactant mass is expanded three times in successively positioned stepped zones.
Claim 5
Dependent Claim
124 words
A carbon black reactor which comprises: a. an axial section adapted with conduit means for the introduction of hydrocarbon feed and gaseous reactants; b. a choke positioned within said axial section; c. at least one stepped section in axial contiguous alignment with said axial section, said stepped section having a substantially uniform diameter greater than the diameter of said axial section; d. a combustion section in axial contiguous alignment with said stepped section, said combustion section having a diameter greater than the diameter of said stepped section and being adapted with conduit means through its periphery for the introduction of reactants thereinto; and e. a reaction section in axial alignment with said combustion section and adapted with conduit means for recovery of carbon black.
Claim 6
Dependent Claim
20 words
The carbon black reactor as defined in claim 6 in which said choke is movably positioned within said axial section.
Claim 7
Dependent Claim
38 words
The carbon black reactor as defined in claim 7 in which said choke is positioned within said axial section downstream from the locus of discharge of said conduit means for the introduction of hydrocarbon feed and gaseous reactants.
Claim 8
Dependent Claim
32 words
The carbon black reactor as defined in claim 8 in which the passageway through said choke has an area from about 0.04 to about 0.8 of the area of said axial section.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |