Patent US4025460A successfully refreshed from Google Patents.
US4025460A
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Catalyst for gasification of heavy hydrocarbons in fluidized bed
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
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Filing: 1975-06-04
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Granted: 1977-05-24
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Expires: 1995-06-04
Abstract
Abstract A catalyst for the gasification of heavy hydrocarbons in a fluidized bed which contains CaO and has high catalytic activity, long life and mechanical strength, and further characterized in that a part or the whole of said CaO exists in the form of at least one member selected from the group consisting of 2CaO.Fe 2 O 3 , 2CaO.SiO 2 and 3CaO.SiO 2 is disclosed.
Inventors
- 👤 Mikio Ueda
- 👤 Takeshi Kubota
- 👤 Yasuo Nishikawa
- 👤 Akira Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:32
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/78; B01J23/02; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
57 words
A catalyst for the gasification of heavy hydrocarbons in a fluidized bed which contains CaO and is characterized in that a part or the whole of said CaO exists in the form of at least one member selected from the group consisting of 2CaO.sup.. Fe 2 O 3 , 2CaO.sup.. SiO 2 and 3CaO.sup.. SiO 2 .
Claim 2
Dependent Claim
57 words
A catalyst for the gasification of heavy hydrocarbons in a fluidized bed which contains CaO and is characterized in that a part or the whole of said CaO exists in the form of at least one member selected from the group consisting of 2CaO.sup.. Fe 2 O 3 , 2CaO.sup.. SiO 2 and 3CaO.sup.. SiO 2 .
Claim 3
Dependent Claim
36 words
A catalyst for the gasification of heavy hydrocarbons in a fluidized bed as claimed in claim 1, in which most of CaO component is at least one of 2CaO.sup.. SiO 2 and 3CaO.sup.. SiO 2 .
Claim 4
Dependent Claim
38 words
A catalyst for the gasification of heavy hydrocarbons in a fluidized bed as claimed in claim 1, in which a part of CaO component is 2CaO.sup.. Fe 2 O 3 and the remainder CaO content is free CaO.
Claim 5
Dependent Claim
28 words
A catalyst for the gasification of heavy hydrocarbons in a fluidized bed as claimed in claim 1, to which less than 70% by weight of MgO is added.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |