The oxygen free
decomposition of raw organic materials into gas due to an elevated temperature
is known as pyrolysis. In the gasification process pyrolysis occurs converting
raw materials containing carbon into a combustible gas containing mainly carbon
monoxide, methane, hydrogen, and tars.
This basic process takes place in
a gasifier which is a chamber where the air flow, fuel flow, and temperature can
be controlled. Furthermore steam can be added to control the gasification
process. In the Pyroneer Gasifier pyrolysis takes place at a lower temperature
than normal gasifiers. Once gas has been produced in the gasifier it can for
example be used for power production through a traditional combustion process.
The differences between combustion, traditional gasification and low temperature
gasification are illustrated below.