Method and apparatus for production of a gas from a comminuted biological waste material
1992
Hansen, E.
Method and apparatus for production of a gas from a comminuted biological waste material, such as straw are presented. In this method, the comminuted material is introduced into a reactor through a gastight lock possibly with an addition of steam and distributed into a bed of catalytic bodies. The movement is in such a way that the material during the gassification is flowing along a predetermined path as the produced gas and the residual material are removed through the bottom of said bed. In order to produce a gas of high calorific value and without tar and to prevent the surfaces for heat transmission from tar deposits, and to prevent formation of residual material from the gas production that contains substantial amounts of compositions, which are unacceptable to the environment, the method is characterized in that the bed is heated indirectly, and that the agitation of the catalytic bodies is provided by such a vibration of the bed that the material is conveyed downwards through the bed, the filler bodies being ceramic carriers for a catalytically acting heavy metal.
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