Manual For Bio-fuels
Properties of boifuels and peat
In the boiler plants of Baltic Sea countries a
wide range of various woodbased fuels
are burned. To some extent also straw and
other biomass based fuels are used. All
these fuels are considered as renewables
and according to the international
agreement the CO2 emitted by the
combustion of these fuels is not listed as a
greenhouse gas.
Wood, in particular the shell of wood cells,
consists mainly from cellulose, lignin and
hemicellulose. Due to the high carbon and
hydrogen content, the lignin has higher
calorific value than cellulose and
hemicellulose. In smaller quantities the
wood contains also tar, resins and phenols
that can cause fouling of heat transfer
surfaces and stack interior with the
deposits that are difficult to remove
From the point of view of combustion
technology and practical use of fuels the
following properties of fuels are of most
interest: chemical composition, moisture,
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