Patent US3972985A successfully refreshed from Google Patents.
US3972985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of deposits in carbon black reactors
Assignee: Phillips Petroleum Co
•
Filing: 1974-12-16
•
Granted: 1976-08-03
•
Expires: 1994-12-16
Abstract
Abstract Deposits in a carbon black reactor are reduced by passing feed oil, quench water and/or liquid fuel to the reactor through a magnetic field prior to introduction into the reactor.
Inventors
- 👤 Amaury Sanelemente
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:23
CPC Classifications
C; C23; C23F; C23F15/00; C23F15/005; B; B01; B01J; B01J19/00; B01J19/0006; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
In a process for producing carbon black by introducing a feed oil into a reactor and therein heating the oil to an elevated temperature to decompose the oil to produce carbon black, the method of reducing deposits in the reactor wherein the feed oil contains at least one metal of the group consisting of silicon, aluminum, iron, sodium and calcium, which comprises establishing a magnetic field of at least 10 oersteds, passing the feed oil through the magnetic field before introducing the feed oil into the reactor, and imparting a swirl to the feed oil while in the magnetic field.
Claim 2
Dependent Claim
100 words
In a process for producing carbon black by introducing a feed oil into a reactor and therein heating the oil to an elevated temperature to decompose the oil to produce carbon black, the method of reducing deposits in the reactor wherein the feed oil contains at least one metal of the group consisting of silicon, aluminum, iron, sodium and calcium, which comprises establishing a magnetic field of at least 10 oersteds, passing the feed oil through the magnetic field before introducing the feed oil into the reactor, and imparting a swirl to the feed oil while in the magnetic field.
Claim 3
Dependent Claim
91 words
The method of claim 1 wherein the feed oil is heated by burning a liquid fuel to form combustion gases, said liquid fuel containing at least one metal of the group consisting of silicon, aluminum, iron, sodium and calcium, and passing the combustion gases into contact with the fuel oil, and further comprising establishing a second magnetic field of at least 10 oersteds, passing the liquid fuel through the second magnetic field before burning the liquid fuel, and imparting a swirl to the liquid fuel while in the second magnetic field.
Claim 4
Dependent Claim
77 words
The method of claim 1 wherein the heated oil is quenched by introducing a quench liquid into the reactor, said quench liquid containing at least one metal of the group consisting of calcium and magnesium, and further comprising establishing a second magnetic field of at least 10 oersteds, passing the quench liquid through the second magnetic field before introducing same into the reactor, and imparting a swirl to the quench liquid while in the second magnetic field.
Claim 5
Dependent Claim
91 words
The method of claim 3 wherein the feed oil is heated by burning a liquid fuel to form combustion gases, said liquid fuel containing at least one metal of the group consisting of silicon, aluminum, iron, sodium and calcium, and passing the combustion gases into contact with the fuel oil, and further comprising establishing a third magnetic field of at least 10 oersteds, passing the liquid fuel through the third magnetic field before burning the liquid fuel, and imparting a swirl to the liquid fuel while in the third magnetic field.
Claim 6
Dependent Claim
107 words
In a process for producing carbon black by introducing a feed oil into a reactor, therein heating the oil to an elevated temperature to decompose the oil to produce carbon black, and introducing a quench liquid into a downstream region of the reactor, said quench liquid containing at least one metal of the group consisting of calcium and magnesium, the method of reducing deposits in the reactor which comprises establishing a magnetic field of at least 10 oersteds, passing the quench liquid through the magnetic field before introducing the quench liquid into the reactor, and imparting a swirl to the quench liquid while in the magnetic field.
Claim 7
Dependent Claim
107 words
In a process for producing carbon black by introducing a feed oil into a reactor, therein heating the oil to an elevated temperature to decompose the oil to produce carbon black, and introducing a quench liquid into a downstream region of the reactor, said quench liquid containing at least one metal of the group consisting of calcium and magnesium, the method of reducing deposits in the reactor which comprises establishing a magnetic field of at least 10 oersteds, passing the quench liquid through the magnetic field before introducing the quench liquid into the reactor, and imparting a swirl to the quench liquid while in the magnetic field.
Claim 8
Dependent Claim
91 words
The method of claim 5 wherein the feed oil is heated by burning a liquid fuel to form combustion gases, said liquid fuel containing at least one metal of the group consisting of silicon, aluminum, iron, sodium and calcium, and passing the combustion gases into contact with the fuel oil, and further comprising establishing a second magnetic field of at least 10 oersteds, passing the liquid fuel through the second magnetic field before burning the liquid fuel, and imparting a swirl to the liquid fuel while in the second magnetic field.
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) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |