Apparatus for gasifying solid fuels and wastes
An apparatus is disclosed for effecting the conversion of solid fuels (including solid organic waste materials having a fuel valve) by high temperature gasification into clean-burning and uniform gaseous fuel called ''producer gas''. The apparatus comprises a twosection, stacked double-shell gasifier reactor defining sequentially descending, drying, distillation, oxidation and reduction reaction zones through which a continuously fed column of the solid fuel descends during its conversion to a gaseous fuel. Means are provided for drawing process air into the oxidation zone for burning reaction with carbonized fuel passing therethrough and for thereafter drawing reaction gases in downdraft fashion through the lower fuel reduction zone of the gasifier and thence in sequence through the annular space defined by the double-shell structure of the lower section of the gasifer in indirect countercurrent heat exchange relationship with the fuel column portion in the oxidation and reduction zones and through the annular space defined by the double-shell structure of the upper section of the gasifier in indirect co-current heat exchange relationship with the fuel column portion in the drying and distillation zones. The inner shell elements of the two sections of the stacked double-shell reactor structure are arranged in hanging manner within their respective outer shell elements to allow expansion of the double-shell structure under the high temperature conditions experienced by the gasifier without harmful stress build-up in the apparatus.
- Assignee:
- Energy Recovery Research Group Inc
- Patent Number(s):
- US 4309195
- OSTI ID:
- 5666311
- Resource Relation:
- Patent File Date: Filed date 2 Jun 1980; Other Information: PAT-APPL-155514
- Country of Publication:
- United States
- Language:
- English
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GASIFICATION
PRODUCER GAS
PRODUCTION
SOLID FUELS
SOLID WASTES
CONFIGURATION
EQUIPMENT
HIGH TEMPERATURE
REDOX REACTIONS
SEPARATION PROCESSES
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FLUIDS
FUEL GAS
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GAS FUELS
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