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What is Fixed Bed
Pyrolysis ?
Fixed bed pyrolysis
In fixed bed pyrolysis a fixed bed pyrolyser is used. The feed material
in the reactor is fixed and heated at high temperature. Thus, feed material
is converted into gaseous mixture, which is condensed for liquid production.
As the feed material is fixed in the reactor bed, (reactor) it is called
fixed bed pyrolysis. In this process the feed material is fed into the
reactor and heat is supplied externally. Nitrogen or other inert gas
is used for making inert condition and for helping the gaseous mixture
to dispose of from the reactor. Fluidized bed pyrolysis is more complex.
This study is based on continuous fixed bed pyrolysis system.
Table 2.1 Thermal conversion technologies, products and
applications (Bridgwater, 1992)
Technology |
Primary product |
Example application |
Combustion
Gasification
Pyrolysis generally
Very slow pyrolysis
Fast pyrolysis(low temperature)
Fast pyrolysis(high temperature)
|
Heat
Gas
Gas
Liquid
Char
Solid charcoal
Liquid
Gas
|
Heating
Fuel gas
Fuel gas
Liquid fuel & chemical
Solid fuel/ fuel slurry
Solid fuel
Liquid fuel
Gaseous fuel and chemical
|
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