Sigma Holzgas, Руководство и установка

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1) Short description
1.1) Gasification technology
The wood gas (ger. holzgas) comes in the process of gasifing of the wood. This
is the mixture of flammable gases: the oxide of carbon, hydrogen and methane,
and also incombustible -- nitrogen, the dioxide of carbon, water steam. The
composition of the gas depends on many factors as: from current temperature
in the hearth of the gas generator, the moisture of the loaded fuel and other.
The gasifing of solid fuels is technology counting above 200 years. On the
beginning XIX w. it was used so-called urban gas to the supply of cookers,
street lamp and to industrial aims. It was produced from the carbon then.
Generally -- the artificially formed gas from the gasifing of the solid fuel is called
the generator gas.
Technology this consists in the working on the solid fuel with series of thermo-
chemical reactions, the flammable gas becomes in the result of them. Gasifing
just defines oneself this cycle of conversions. This process holds in the device
called gas-generator.
The type- matter of the wood gas can look as follows:
oxide of the carbon of CO 19%
hydrogen H2 18%
methane CH4 1,25%
dioxide of the carbon 12%
steam water H2O 2,50%
nitrogen N2 the rest
From these exchanged, only three first gases (coloured) are flammable.
Remaining do not burn and make up only unnecessary ballast, in the principle
they thin the gas and reduce its fuel value. From this regard it would be good to
remove them. However nitrogen from the wood gas can’t be removed (the basic
component of air, in which we gasify the wood), then can the water steam
relatively easily humid from the gas in the cooler. The content of the dioxide of
the carbon depends first of all from the temperature in the gas-generator (if
higher, the more CO and less CO2).