US4231760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for gasification using a synthetic CO2 acceptor
Assignee: Consolidation Coal Co
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Filing: 1979-03-12
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Granted: 1980-11-04
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Expires: 1999-03-12
Abstract
Abstract A gasification process is disclosed using a synthetic CO 2 acceptor consisting essentially of at least one compound selected from the group consisting of calcium oxide and calcium carbonate supported in a refractory carrier matrix, the carrier having the general formula Ca 5 (SiO 4 ) 2 CO 3 . A method for producing the synthetic CO 2 acceptor is also disclosed.
Inventors
- 👤 Michael S. Lancet
- 👤 George P. Curran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:28
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/54; C10J3/56; C10J3/72; C10J3/723; C10J3/78; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/094; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0973; C10J2300/0976; C10J2300/0983; C10J2300/0996; C10J2300/18; C10J2300/1807
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
In a process for producing a synthesis gas by reacting a carbonaceous fuel with water in the presence of a CO 2 acceptor comprising calcium oxide to produce a synthesis gas rich in hydrogen with at least a portion of the carbon dioxide so produced being reacted with said calcium oxide to produce calcium carbonate and to provide sufficient heat to maintain a desired reaction temperature, the improvement comprising; using as the CO 2 acceptor, a CO 2 acceptor consisting essentially of calcium oxide supported in a refractory carrier matrix, said carrier having the general formula Ca 5 (SiO 4 ) 2 CO 3 wherein said calcium oxide is present in an effective amount up to about 50 weight percent, calculated as CaO based on the weight of the acceptor.
Claim 2
Dependent Claim
130 words
In a process for producing a synthesis gas by reacting a carbonaceous fuel with water in the presence of a CO 2 acceptor comprising calcium oxide to produce a synthesis gas rich in hydrogen with at least a portion of the carbon dioxide so produced being reacted with said calcium oxide to produce calcium carbonate and to provide sufficient heat to maintain a desired reaction temperature, the improvement comprising; using as the CO 2 acceptor, a CO 2 acceptor consisting essentially of calcium oxide supported in a refractory carrier matrix, said carrier having the general formula Ca 5 (SiO 4 ) 2 CO 3 wherein said calcium oxide is present in an effective amount up to about 50 weight percent, calculated as CaO based on the weight of the acceptor.
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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |