US3615210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of carbon black
Assignee: Cabot Corp
•
Filing: 1970-04-02
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Granted: 1971-10-26
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Expires: 1990-04-02
Abstract
Abstract Process for the production of carbon black wherein a hydrocarbonaceous liquid feedstock is atomized by the injection thereof as a coherent penetrating stream transversely into an enclosed high energy gas stream produced by the combustion of a fuel and oxidant gas and thereafter conducting the thusly atomized feedstock traversely into a combustion product and/or oxygen-containing gas stream under carbon black forming conditions.
Inventors
- 👤 Merrill E Jordan
- 👤 Allan C Morgan
- 👤 William G Burbine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:44
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B01; B01D; B01D1/00; B01D1/14; B01D1/16; C01; C01B; C01B13/00; C01B13/14; C01B13/20; C01B13/22; B01J; B01J19/00; B01J19/0006
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
25 words
The process of claim 1 wherein said enclosed gas stream provided in (A) is an oxygen-containing gas stream comprising at least 20 volume percent oxygen.
Claim 2
Dependent Claim
25 words
The process of claim 1 wherein said enclosed gas stream provided in (A) is produced by combustion of a fluid fuel with an oxygen-containing gas.
Claim 3
Dependent Claim
36 words
The process of claim 3 wherein the amount of oxygen-containing gas employed for the combustion of the fluid fuel provides between about 80 and about 350 percent of the molecular oxygen required for complete combustion thereof.
Claim 4
Dependent Claim
12 words
The process of claim 3 wherein the fluid fuel employed comprises methane.
Claim 5
Dependent Claim
22 words
The process of claim 1 wherein the oxygen-containing gas employed in step (i) comprises more than about 90 volume percent molecular oxygen.
Claim 6
Dependent Claim
15 words
The process of claim 1 wherein the fluid fuel employed in step (i) comprises methane.
Claim 7
Dependent Claim
26 words
The process of claim 1 wherein the combustion product gas stream of step (i) is accelerated to a kinetic head of greater than about 5 p.s.i.
Claim 8
Dependent Claim
16 words
The process of claim 1 wherein the essentially hydrocarbonaceous feedstock employed is a residual refinery tar.
Claim 9
Dependent Claim
33 words
The process of claim 1 wherein the step (ii) the liquid feedstock is injected into said combustion product gas stream at an angle of between about 45* upstream to about 95* downstream thereto.
Claim 10
Dependent Claim
26 words
The process of claim 1 wherein in step (ii) the liquid feedstock is injected into said combustion product stream as a plurality of coherent unfragmented jets.
Claim 11
Dependent Claim
29 words
The process of claim 1 wherein the heat release rate of said combustion reaction of step (i) is greater than about 20 X 106 B.t.u.''s/hr./ft.3 of combustion zone volume.
Claim 12
Dependent Claim
27 words
The process of claim 1 wherein the heat release rate of said combustion reaction step (i) is greater than about 1,000 X 106B.t.u.''s/hr./ft.3 of combustion zone volume.
Claim 13
Dependent Claim
22 words
The process of claim 1 wherein the resulting reaction mixture formed in step (C) attains a temperature of above about 3,000* F.
Claim 14
Dependent Claim
22 words
The process of claim 1 wherein the residence time between step (C) and (D) is between about 1 and about 100 milliseconds.
Claim 15
Dependent Claim
17 words
The process of claim 1 wherein a plurality of feedstock atomizate-containing streams are formed in step (B).
References Cited (Backward Citations)
US2616794A
Cited
US2851337A
Cited
US2768067A
Cited
US2781247A
Cited
US2918353A
Cited
US3211532A
Cited
US3235334A
Cited
US3445190A
Cited
US3523759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |