US4162290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallel steam reformers to provide low energy process
Assignee: MW Kellogg Co
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Filing: 1977-12-29
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Granted: 1979-07-24
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Expires: 1997-12-29
Abstract
Abstract A low energy process for the production of hydrogen-rich gas which involves the process sequence of primary reforming and secondary reforming includes parallel steam reformers for the primary reforming of the hydrocarbon feed, one portion of the hydrocarbon feed being heated using radiant heat, i.e., a steam reforming furnace, and another portion of the hydrocarbon feed being heated using indirect heat exchange with the effluent from the secondary reforming, i.e., an exchanger-reactor.
Inventors
- 👤 Duffer B. Crawford
- 👤 Colman L. Becker
- 👤 Joseph R. LeBlanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:43
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/382; C01B3/384
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
125 words
A system for the steam reforming of hydrocarbons which comprises: (1) in parallel (a) a steam reforming furnace having a radiant section, reforming tubes in said radiant section, and means for producing radiant heat, for primary reforming a first mixture of hydrocarbon feed and steam; (b) an exchanger-reactor having indirect heat exchange means for primary reforming a second mixture of hydrocarbon feed and steam passing therethrough; (2) a secondary reformer; (3) means for combining the effluents from said steam reforming furnace and said exchanger-reactor, and introducing said combined effluents to said secondary reformer; and (4) means for passing the effluent from said secondary reformer to said exchanger-reactor to supply the heat for the primary reforming of said mixture of hydrocarbon feed and steam passing therethrough.
Claim 2
Independent Claim
125 words
A system for the steam reforming of hydrocarbons which comprises: (1) in parallel (a) a steam reforming furnace having a radiant section, reforming tubes in said radiant section, and means for producing radiant heat, for primary reforming a first mixture of hydrocarbon feed and steam; (b) an exchanger-reactor having indirect heat exchange means for primary reforming a second mixture of hydrocarbon feed and steam passing therethrough; (2) a secondary reformer; (3) means for combining the effluents from said steam reforming furnace and said exchanger-reactor, and introducing said combined effluents to said secondary reformer; and (4) means for passing the effluent from said secondary reformer to said exchanger-reactor to supply the heat for the primary reforming of said mixture of hydrocarbon feed and steam passing therethrough.
Claim 3
Dependent Claim
16 words
A system according to claim 1 wherein said exchanger-reactor is a tube and shell heat exchanger.
Claim 4
Dependent Claim
14 words
A system according to claim 2 wherein said shell is a high pressure vessel.
Claim 5
Dependent Claim
27 words
A system according to claim 2 wherein said means for passing the effluent to said exchanger-reactor is from said secondary reformer to the shell of said exchanger-reactor.
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) | 1982-07-23 | 1983-01-22 | 1983-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-23 | 1987-01-22 | 1987-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-23 | 1991-01-22 | 1991-07-24 | $7700.00 | Window Closed / Lapsed |