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To create a clean
energy-rich BioGas, the BioMass is indirectly
heated in the Pyrolyser in an oxygen depleted
atmosphere. This prevents the formation of
unwanted harmful compounds such as dioxins
and furans associated with conventional
combustion. The BioGas is passed through a
Gas Cleaning stage prior to being stored in
gas storage tanks.
The BioGas is fed to gas
turbines or gas engines that power the
electrical generators to produce renewable
electrical energy. The BioGas is subjected to
such high temperatures within the
turbines/engines that any traces of dioxins
and furans are completely destroyed. Exhaust
heat produced by the turbines/engines is
reused in a heat recovery steam turbine to
increase the overall electrical conversion
efficiency. This results in an available net
electrical output power of approximately
1.0MW to 2.0MW per 40,000tpa of MSW input
(dependent on waste input).
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