US3798005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for obtaining hydrogen
Assignee: Siemens AG
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Filing: 1970-12-15
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Granted: 1974-03-19
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Expires: 1990-12-15
Abstract
Abstract A hydrocarbon and air mixture or a hydrocarbon and oxygen mixture is incompletely catalytically burned, in a highly porous sinter block or stone containing nickel or platinum. The block is provided with passage openings. The thus obtained gas mixture which consists, mainly of CO and H2 is brought by means of at least one quenching with H2O down to temperatures of 500* to 150*C and subsequently reacted with the formed water vapor in sinter blocks which are highly porous, contain conversion catalysts and are provided with preferably parallel passage openings.
Inventors
- 👤 C Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:10
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/386; C01B3/48; C01B2203/00; C01B2203/02; C01B2203/025; C01B2203/0261; C01B2203/0283; C01B2203/0294; C01B2203/04; C01B2203/0415; C01B2203/0465; C01B2203/0475; C01B2203/06; C01B2203/066; C01B2203/08; C01B2203/0872; C01B2203/0877; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/1064; C01B2203/107; C01B2203/1076; C01B2203/12; C01B2203/1205; C01B2203/1211; C01B2203/1235; C01B2203/1247; C01B2203/80; C01B2203/82; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
The device of claim 1, wherein a catalyst-free sintered block provided with passage openings is arranged in the oxygen inlet duct in flow direction ahead of the first sintered block, a free space is formed between the catalyst-free block and the first sintered Block and the inlet duct for hydrocarbons ending in said free space.
Claim 2
Dependent Claim
74 words
The device of claim 1, wherein between the sintered block provided with combustion catalyst and the first sintered block provided with the converting catalyst, an additional sintered block having passage openings is arranged at such distance from both sintered blocks that a free space forms between said sintered blocks and means for injecting liquid water into the free space between said additional sintered block and the first sintered block provided with the converting catalyst.
Claim 3
Dependent Claim
35 words
The device of claim 1, wherein heat exchangers for preheating at least one of the hydrocarbons, the water and the oxygen are provided behind the last sintered block in flow direction provided with converting catalyst.
Claim 4
Dependent Claim
13 words
The device of claim 1, wherein nickel is provided as the combustion catalyst.
Claim 5
Dependent Claim
12 words
The device of claim 1, wherein platinum is provided as combustion catalyst.
Claim 6
Dependent Claim
14 words
The device of claim 5, wherein the combustion catalyst is doped with uranium oxide.
Claim 7
Dependent Claim
14 words
The device of claim 6, wherein the combustion catalyst is doped with uranium oxide.
Claim 8
Dependent Claim
37 words
The device of claim 1, wherein a mixture of at least two of the substances selected from the group consisting of zinc, copper, chromium and iron is provided in metallic or oxidic form as the converting catalyst.
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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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |