US5011670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated reformer process for the production of carbon black
Assignee: Air Products and Chemicals Inc
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Filing: 1989-03-07
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Granted: 1991-04-30
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Expires: 2009-03-07
Abstract
Abstract Carbon black is produced from a pyrolyzed hydrocarbon wherein pyrolysis is effected by combusting a synthesis gas containing hydrogen and carbon monoxide. The synthesis gas is produced from reforming a hydrocarbon fuel, wherein the reformation is heated by combusting carbon black effluent tail gas or indirect heat exchange of the hot tail gas.
Inventors
- 👤 Ruth A. Davis
- 👤 David M. Nicholas
- 👤 Dale D. Smith
- 👤 Shoou-I Wang
- 👤 Richard A. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:29
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01P; C01P2006/00; C01P2006/80; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) reforming a hydrocarbon fuel into a predominantly hydrogen and carbon monoxide containing synthesis gas with steam in a catalytic elevated temperature reformation reaction; (b) pyrolyzing and partially oxidizing said hydrocarbon feedstock in the presence of the combustion of said synthesis gas and an oxidant gas to produce a carbon black containing tailgas wherein the heat of pyrolysis is provided by the combustion of said synthesis gas; (c) quenching said tailgas and recovering said carbon black from said tailgas; (d) utilizing tailgas after carbon black recovery to provide said elevated temperature for the reforming of said hydrocarbon fuel wherein at least a portion of said tailgas after carbon black recovery is combusted with a second oxidant gas to produce said elevated temperature.
Claim 2
Dependent Claim
135 words
A process for the production of carbon black from a hydrocarbon feedstock comprising: (a) reforming a hydrocarbon fuel into a predominantly hydrogen and carbon monoxide containing synthesis gas with steam in a catalytic elevated temperature reformation reaction; (b) pyrolyzing and partially oxidizing said hydrocarbon feedstock in the presence of the combustion of said synthesis gas and an oxidant gas to produce a carbon black containing tailgas wherein the heat of pyrolysis is provided by the combustion of said synthesis gas; (c) quenching said tailgas and recovering said carbon black from said tailgas; (d) utilizing tailgas after carbon black recovery to provide said elevated temperature for the reforming of said hydrocarbon fuel wherein at least a portion of said tailgas after carbon black recovery is combusted with a second oxidant gas to produce said elevated temperature.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein carbon dioxide is added to said elevated temperature reformation reaction.
References Cited (Backward Citations)
US3172729A
Cited
US1902797A
Cited
US2015360A
Cited
US2062358A
Cited
US2173695A
Cited
US2694621A
Cited
US2702782A
Cited
US3232728A
Cited
US3810975A
Cited
US3988425A
Cited
US4185083A
Cited
US4261964A
Cited
US4393034A
Cited
US4460558A
Cited
US4490346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |