US4069298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black producing method
Assignee: Phillips Petroleum Co
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Filing: 1976-07-12
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Granted: 1978-01-17
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Expires: 1996-07-12
Abstract
Abstract A carbon black producing apparatus is provided in which a quench fluid is introduced into a reaction zone for cooling hot smoke which contains solid carbon black particles which are produced by the pyrolysis of a carbon black make hydrocarbon by the heating of same with a combusted air/fuel mixture. The quench fluid is introduced into the reaction zone in a generally tangential direction and in a direction counterrotational to the direction of the vortex flow of the hot smoke flowing along the length of the reaction zone. The cooled smoke is passed to a heat exchanger for further cooling of the smoke after which the smoke is separated into an off-gas phase and a carbon black particle phase by filtering means. The carbon black can then be pelleted and dried for use.
Inventors
- 👤 Harold R. Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:18
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C09C1/56; C09C1/58; C01; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A process of quenching a carbon black manufacturing furnace process, in which a free oxygen-containing gas and a carbon black make hydrocarbon are subjected to partial combustion and pyrolysis in a reaction zone to produce a hot smoke containing carbon black particles, which flows in a vortex path along the reaction zone, comprising solid carbon black particles suspended in off-gas, said process including the steps of: a. introducing a quench fluid, which is cooler than the hot smoke in the reaction zone, into the reaction zone in a generally tangential direction for initial vortex flow in a direction counterrotational to the direction of vortex flow of the hot smoke.
Claim 2
Dependent Claim
109 words
A process of quenching a carbon black manufacturing furnace process, in which a free oxygen-containing gas and a carbon black make hydrocarbon are subjected to partial combustion and pyrolysis in a reaction zone to produce a hot smoke containing carbon black particles, which flows in a vortex path along the reaction zone, comprising solid carbon black particles suspended in off-gas, said process including the steps of: a. introducing a quench fluid, which is cooler than the hot smoke in the reaction zone, into the reaction zone in a generally tangential direction for initial vortex flow in a direction counterrotational to the direction of vortex flow of the hot smoke.
Claim 3
Dependent Claim
64 words
The process as set forth in claim 1 including: a. cooling said smoke from the reaction zone further after same is exhausted from the reaction zone; b. separating a portion of the further cooled smoke; and c. recycling said portion of the further cooled smoke back to the reaction zone and wherein same is used for at least a portion of the quench fluid.
Claim 4
Dependent Claim
19 words
The process as set forth in claim 2 wherein: a. all said quench fluid being said further cooled smoke.
Claim 5
Dependent Claim
18 words
The process as set forth in claim 2 wherein: a. said further cooling is by indirect heat transfer.
Claim 6
Dependent Claim
23 words
The process as set forth in claim 2 wherein: a. said quench fluid is at a temperature of up to approximately 600° F.
Claim 7
Dependent Claim
34 words
The process as set forth in claim 2 wherein: a. said hot smoke is cooled to a temperature of up to approximately 1800° F in said reaction zone by mixing with said quench fluid.
Claim 8
Dependent Claim
35 words
The process as set forth in claim 2 including: a. further cooling said smoke, after the first cooling step and after the separating of the portion of smoke, by water quenching of the remaining smoke.
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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |