US4022591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal gasification apparatus
Assignee: Shell USA Inc
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Filing: 1976-06-14
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Granted: 1977-05-10
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Expires: 1996-06-14
Abstract
Abstract An apparatus for the continuous gasification of coal by partial combustion with a reactant gas is disclosed, wherein a vertical gasification reactor is provided with a reactant supply and ash removal assembly adapted to supply coal and reactant gases and to remove ash particles to and from the reactor via a constricted passageway in the reactor bottom. The assembly includes an ash quench chamber having means for supplying coal and reactant gases through the reactor disposed therein which opens opposite the constricted passageway a predetermined distance therefrom. The apparatus may be operated continuously without collecting by-product ash particles in the reactor and without superheating the reactant supply means.
Inventors
- 👤 Gernot Staudinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:46
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/52; C10J3/526; C10J3/485; C10J3/50; C10J3/506; C10J3/72; C10J3/78; C10J3/82; C10J3/84; C10J3/845; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0973; C10J2300/0976; C10J2300/18; C10J2300/1846
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
155 words
An apparatus for the gasification of coal comprising: a vertical reactor forming a reaction zone for partial combustion of powdered coal with a gas containing oxygen for producing a product gas and provided with a bottom having a constricted passageway; outlet means for removing product gas from the vertical reactor; and means for supplying coal and reactant gases to said reactor and for removing ash particles from said reactor via said constricted passageway, said means including: a chamber connected with the reactor bottom and disposed about the constricted passageway; means for supplying coal and reactant gases through the reactor disposed in the chamber and opening opposite the constricted passageway; inlet means for supplying and maintaining water in the chamber for quenching ash particles passing from the vertical reactor through the constricted passageway and for cooling the means for supplying said coal and reactant gases; and outlet means for removing solidified slag particles from the chamber.
Claim 2
Independent Claim
155 words
An apparatus for the gasification of coal comprising: a vertical reactor forming a reaction zone for partial combustion of powdered coal with a gas containing oxygen for producing a product gas and provided with a bottom having a constricted passageway; outlet means for removing product gas from the vertical reactor; and means for supplying coal and reactant gases to said reactor and for removing ash particles from said reactor via said constricted passageway, said means including: a chamber connected with the reactor bottom and disposed about the constricted passageway; means for supplying coal and reactant gases through the reactor disposed in the chamber and opening opposite the constricted passageway; inlet means for supplying and maintaining water in the chamber for quenching ash particles passing from the vertical reactor through the constricted passageway and for cooling the means for supplying said coal and reactant gases; and outlet means for removing solidified slag particles from the chamber.
Claim 3
Dependent Claim
54 words
The apparatus of claim 1 wherein the means for supplying coal and reactant gases to the vertical reactor includes: a set of coaxial tubes protruding into the chamber, said set of coaxial tubes being positioned in a substantially central position with and opening opposite the constricted passageway above the water maintained in the chamber.
Claim 4
Dependent Claim
32 words
The apparatus of claim 2 wherein the size of the constricted passageway is from about 3 to about 10 times the diameter of the outermost tube of the set of coaxial tubes.
Claim 5
Dependent Claim
15 words
The apparatus of claim 2 wherein a plurality of sets of coaxial tubes are provided.
Claim 6
Dependent Claim
15 words
The apparatus of claim 4 wherein the constricted passageway has an elongated horizontal cross-section form.
Claim 7
Dependent Claim
38 words
The apparatus of claim 1 including inlet means for supplying a gas containing oxygen to the chamber, said means being positioned adjacent the constricted passageway for igniting recirculating product gas descending from the reactor through the constricted passageway.
Claim 8
Dependent Claim
40 words
The apparatus of claim 1 wherein the chamber is provided with an inclined surface below the surface of water maintained therein; and said outlet means for removing solid slag particles is located adjacent the lowermost portion of the inclined surface.
Claim 9
Dependent Claim
22 words
The apparatus of claim 1 wherein the vertical reactor bottom slopes downwardly, the constricted passageway being provided at the lowermost portion thereof.
References Cited (Backward Citations)
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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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |