US4261964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utilization of combustible components of a tail-gas in the manufacture of carbon black at a high production rate
Assignee: Degussa Engineered Carbons LP
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Filing: 1979-07-16
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Granted: 1981-04-14
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Expires: 1999-07-16
Abstract
Abstract The present invention provides an effective means of increasing the production rate of a carbon black process. A hydrocarbon fuel is burned in an insufficient amount of air to support complete combustion to produce a hot gas mixture which produces a tail-gas containing carbon black by the incomplete combustion of a hydrocarbon feedstock. This tail-gas is quenched, the carbon black is removed, and the tail-gas is dried. One or more of the combustible components are removed from the dried tail-gas and from 33 1/3% to 100% of the fuel is replaced with the combustible components so removed. One method of removing carbon monoxide is by contacting the tail-gas with a liquid sorbent comprising cuprous aluminum halide; complexing substantially all of the carbon monoxide contained in the tail-gas; removing the complexed carbon monoxide from the tail-gas; contacting the complexed carbon monoxide with a stripping ligand that forms a more stable complex with sorbents than carbon monoxide, thereby exchanging the stripping ligand for carbon monoxide and recovering the carbon monoxide and a cuprous aluminum halide-stripping ligand containing complex. The contacting steps conducted under substantially anhydrous conditions in the substantial absence of oxygen.
Inventors
- 👤 Oscar T. Scott, IV
- 👤 Donald J. Pundt
- 👤 Lloyd D. Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:59
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: 16
Claim 1
Independent Claim
111 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) burning a hydrocarbon fuel with air in an insufficient amount to support complete combustion to produce a hot gas mixture; (b) producing a tail-gas containing carbon black by the incomplete combustion of said hydrocarbon feedstock caused by contacting said feedstock with said hot gas mixture; (c) quenching said tail-gas; (d) collecting the carbon black from said tail-gas; (e) drying said tail-gas; (f) removing carbon monoxide from said dried tail-gas; and (g) increasing the carbon black production rate by at least 26% by replacing from 331/3% to 100% of said fuel in step (a) with said carbon monoxide.
Claim 2
Dependent Claim
111 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) burning a hydrocarbon fuel with air in an insufficient amount to support complete combustion to produce a hot gas mixture; (b) producing a tail-gas containing carbon black by the incomplete combustion of said hydrocarbon feedstock caused by contacting said feedstock with said hot gas mixture; (c) quenching said tail-gas; (d) collecting the carbon black from said tail-gas; (e) drying said tail-gas; (f) removing carbon monoxide from said dried tail-gas; and (g) increasing the carbon black production rate by at least 26% by replacing from 331/3% to 100% of said fuel in step (a) with said carbon monoxide.
Claim 3
Dependent Claim
27 words
A process according to claim 1 wherein each BTU equivalent of said replaced fuel is replaced with from 0.85 to 1.3 BTU equivalent of said carbon monoxide.
Claim 4
Dependent Claim
20 words
A process according to claim 1 wherein from 50% to 100% of the fuel is replaced with said carbon monoxide.
Claim 5
Dependent Claim
17 words
A process according to claim 1 wherein all of the fuel is replaced with said carbon monoxide.
Claim 6
Dependent Claim
110 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) burning a hydrocarbon fuel with air in an insufficient amount to support complete combustion to produce a hot gas mixture; (b) producing a tail-gas containing carbon black by the incomplete combustion of said hydrocarbon feedstock caused by contacting said feedstock with said hot gas mixture; (c) quenching said tail-gas; (d) drying said tail-gas; (e) collecting the carbon black from said dried tail-gas; (f) removing hydrogen from said dried tail-gas; and (g) increasing the carbon black production rate by at least 19% by replacing from 331/3% to 100% of said fuel in step (a) with said hydrogen.
Claim 7
Dependent Claim
110 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) burning a hydrocarbon fuel with air in an insufficient amount to support complete combustion to produce a hot gas mixture; (b) producing a tail-gas containing carbon black by the incomplete combustion of said hydrocarbon feedstock caused by contacting said feedstock with said hot gas mixture; (c) quenching said tail-gas; (d) drying said tail-gas; (e) collecting the carbon black from said dried tail-gas; (f) removing hydrogen from said dried tail-gas; and (g) increasing the carbon black production rate by at least 19% by replacing from 331/3% to 100% of said fuel in step (a) with said hydrogen.
Claim 8
Dependent Claim
26 words
A process according to claim 5 wherein each BTU equivalent of said replaced fuel is replaced with from 0.85 to 1.3 BTU equivalent of said hydrogen.
Claim 9
Dependent Claim
19 words
A process according to claim 5 wherein from 50% to 62% of the fuel is replaced with said hydrogen.
Claim 10
Dependent Claim
193 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) burning a hydrocarbon fuel with air in an insufficient amount to support complete combustion to produce a hot gas mixture; (b) producing a tail-gas containing carbon black by the incomplete combustion of said hydrocarbon feedstock caused by contacting said feedstock with said hot gas mixture; (c) quenching said tail-gas; (d) collecting the carbon black from said tail-gas; (e) drying said tail-gas; (f) contacting the dried tail-gas with a liquid sorbent comprising cuprous aluminum halide; (g) complexing substantially all of the carbon monoxide contained in the tail-gas; (h) removing the complexed carbon monoxide from the tail-gas; (i) contacting the complexed carbon monoxide with a stripping ligand that forms a more stable complex with sorbents than carbon monoxide, thereby exchanging the stripping ligand for carbon monoxide and recovering the carbon monoxide and a cuprous aluminum halide-stripping ligand containing complex, said contacting steps conducted under substantially anhydrous conditions in the substantial absence of oxygen; and (j) increasing the carbon black production rate by at least 26% by replacing from 331/3% to 100% of said fuel in step (a) with said carbon monoxide.
Claim 11
Dependent Claim
193 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) burning a hydrocarbon fuel with air in an insufficient amount to support complete combustion to produce a hot gas mixture; (b) producing a tail-gas containing carbon black by the incomplete combustion of said hydrocarbon feedstock caused by contacting said feedstock with said hot gas mixture; (c) quenching said tail-gas; (d) collecting the carbon black from said tail-gas; (e) drying said tail-gas; (f) contacting the dried tail-gas with a liquid sorbent comprising cuprous aluminum halide; (g) complexing substantially all of the carbon monoxide contained in the tail-gas; (h) removing the complexed carbon monoxide from the tail-gas; (i) contacting the complexed carbon monoxide with a stripping ligand that forms a more stable complex with sorbents than carbon monoxide, thereby exchanging the stripping ligand for carbon monoxide and recovering the carbon monoxide and a cuprous aluminum halide-stripping ligand containing complex, said contacting steps conducted under substantially anhydrous conditions in the substantial absence of oxygen; and (j) increasing the carbon black production rate by at least 26% by replacing from 331/3% to 100% of said fuel in step (a) with said carbon monoxide.
Claim 12
Dependent Claim
27 words
A process according to claim 8 wherein each BTU equivalent of said replaced fuel is replaced with from 0.85 to 1.3 BTU equivalent of said carbon monoxide.
Claim 13
Dependent Claim
20 words
A process according to claim 8 wherein from 50% to 100% of the fuel is replaced with said carbon monoxide.
Claim 14
Dependent Claim
17 words
A process according to claim 8 wherein all of the fuel is replaced with said carbon monoxide.
Claim 15
Dependent Claim
202 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) burning a hydrocarbon fuel with air in an insufficient amount to support complete combustion to produce a hot gas mixture; (b) producing a tail-gas containing carbon black by the incomplete combustion of said hydrocarbon feedstock caused by contacting said feedstock with said hot gas mixture; (c) quenching said tail-gas; (d) collecting the carbon black from said tail-gas; (e) drying said tail-gas; (f) contacting the dried tail-gas with cuprous aluminum cloride in a toluene base; (g) complexing substantially all of the carbon monoxide contained in the tail-gas; (h) removing the complexed carbon monoxide from the tail-gas; (i) contacting the complexed carbon monoxide with a stripping ligand that forms a more stable complex with sorbents than carbon monoxide, thereby exchanging the stripping ligand for carbon monoxide and recovering the carbon monoxide and a cuprous aluminum chloride-stripping ligand containing complex, said contacting steps conducted under substantially anhydrous conditions in the substantial absence of oxygen; (j) removing hydrogen from said dried tail-gas; and (k) increasing the carbon black production rate by at least 22% by replacing from 331/3% to 100% of said fuel in step (a) with said carbon monoxide and hydrogen.
Claim 16
Dependent Claim
202 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) burning a hydrocarbon fuel with air in an insufficient amount to support complete combustion to produce a hot gas mixture; (b) producing a tail-gas containing carbon black by the incomplete combustion of said hydrocarbon feedstock caused by contacting said feedstock with said hot gas mixture; (c) quenching said tail-gas; (d) collecting the carbon black from said tail-gas; (e) drying said tail-gas; (f) contacting the dried tail-gas with cuprous aluminum cloride in a toluene base; (g) complexing substantially all of the carbon monoxide contained in the tail-gas; (h) removing the complexed carbon monoxide from the tail-gas; (i) contacting the complexed carbon monoxide with a stripping ligand that forms a more stable complex with sorbents than carbon monoxide, thereby exchanging the stripping ligand for carbon monoxide and recovering the carbon monoxide and a cuprous aluminum chloride-stripping ligand containing complex, said contacting steps conducted under substantially anhydrous conditions in the substantial absence of oxygen; (j) removing hydrogen from said dried tail-gas; and (k) increasing the carbon black production rate by at least 22% by replacing from 331/3% to 100% of said fuel in step (a) with said carbon monoxide and hydrogen.
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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) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |