Coal gasification system with product gas recycle to pressure containment chamber
A pressurized coal gasification system is described which consists of: a vertically oriented, elongated gasifier vessel having an inner, water-cooled chamber for containing a high temperature fuel gas producing reaction, and an outer, pressure resistant chamber; a vertically oriented, elongated heat exchange vessel having an inner, water-cooled chamber containing means for cooling the fuel gas produced in the gasification vessel and an outer, pressure resistant chamber; a horizontally oriented cross-over conduit disposed between the gasifier vessel and the heat exchange vessel, the cross-over conduit having an inner, water-cooled transfer duct for conveying the hot product fuel gas from the inner gasification vessel to the inner heat exchange vessel, and an outer, pressure resistant duct sealingly engaged at opposite ends to the pressure resistant gasification chamber and the pressure resistant heat exchange chamber; the gasification vessel, the cross-over conduit, and the heat exchange vessel each having an annular volume therein formed between the respective pressure resistant members and water-cooled members, the respective annular volumes forming a single, contiguous annular gas flow volume, the annular gas flow volume being distinct from the hot product gas flow within the respective water-cooled members; means for removing entrained particulate matter from the cooled product fuel gas emerging from the heat exchange means; means for controllably introducing at least a portion of the particulate free product fuel gas from the removal means into the annular gas flow volume for flow therethrough; and means for returning the portion of product gas to the cooled product fuel gas at a location downstream of the gasifier vessel with respect to the product fuel gas flow, from the annular gas flow volume.
- Assignee:
- Combustion Engineering, Inc., Windsor, CT
- Patent Number(s):
- US 4610697
- OSTI ID:
- 5253161
- Country of Publication:
- United States
- Language:
- English
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IMPROVEMENTS IN OR RELATING TO REACTORS FOR PERFORMING NUCLEAR FISSION REACTIONS
Related Subjects
010404* -- Coal
Lignite
& Peat-- Gasification
CHEMICAL REACTORS
COAL GAS
COAL GASIFICATION
CONTROL
COOLING
ENERGY TRANSFER
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HEAT EXCHANGERS
HEAT TRANSFER
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PRESSURE CONTROL
PRESSURIZING
RECYCLING
SEALS
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
WATER