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US4111665A
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US
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Apparatus for the gasification under pressure of bituminous coal, especially of fine coal in a generator
Assignee: Steag GmbH
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Filing: 1976-09-07
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Granted: 1978-09-05
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Expires: 1996-09-07
Abstract
Abstract Apparatus for the gasification under pressure of bituminous coal, especially fine coal, comprising a generator which has a container to receive the coal to be gasified and a feed device which supplies the coal to the container, while keeping the container closed off so as to maintain the pressure in the generator. The feed device includes a briquette forming device located on the container, and a continuously operable screw conveyor which feeds the coal to be gasified through the briquette forming device and directly into the container in the form of briquettes. The feed device is encapsulated and, together with the fine coal and briquettes within it, forms a gas tight closure for the container to maintain the pressure therein.
Inventors
- 👤 Rudolf Pasternak
- 👤 Jochen Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:03
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/20; C10J3/30; C10J3/72; C10J3/78; C10J2200/00; C10J2200/15; C10J2200/158; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
137 words
An apparatus for the gasification of fine bituminous coal under pressure comprising a. a container provided with an inlet opening for receiving briquetted coal to be gasified, b. a closed casing fixed directly on said inlet opening, c. feeding means for feeding the fine feed coal into said closed casing, d. a briquette forming device within said closed casing immediately adjacent said inlet opening for forming briquettes from the fine feed coal and discharging the briquettes directly into said container, e. a pressure conveyor device within said closed casing for forcing the fine feed coal continuously to said briquette forming device, and f. a suction device leading from a portion of said casing remote from said inlet opening for removing any gas which may leak past the feeding means and the briquette forming device into said casing.
Claim 2
Independent Claim
137 words
An apparatus for the gasification of fine bituminous coal under pressure comprising a. a container provided with an inlet opening for receiving briquetted coal to be gasified, b. a closed casing fixed directly on said inlet opening, c. feeding means for feeding the fine feed coal into said closed casing, d. a briquette forming device within said closed casing immediately adjacent said inlet opening for forming briquettes from the fine feed coal and discharging the briquettes directly into said container, e. a pressure conveyor device within said closed casing for forcing the fine feed coal continuously to said briquette forming device, and f. a suction device leading from a portion of said casing remote from said inlet opening for removing any gas which may leak past the feeding means and the briquette forming device into said casing.
Claim 3
Dependent Claim
19 words
The apparatus according to claim 1, further comprising means for feeding a binder to said casing in metered quantities.
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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |