Process and apparatus for the thermal production of energy from waste material, particulary refuse
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United States of America Patent
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May 12, 1998
Grant Date -
N/A
app pub date -
May 11, 1995
filing date -
May 16, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Waste material is conveyed in an uncomminuted state on a grate (5) through a combustion chamber (12) of a stationary furnace (10) and at the same time mixed by a thrust and shearing action of the grate (5). A gaseous oxidizing agent is introduced, for example via gas lances, into the combustion chamber (12) from above the layer of waste material (11) lying on the grate (5). The oxidizing agent cooperates with the combustible volatile substances escaping from the waste to form flames. The layer of waste is heated by the thermal radiation of the flames such that degasification occurs. The combustible gases thus freed are partially burnt. The waste material freed from the volatile substances, that is to say refuse coke, and the unburnt volatile substances, that is to say combustible gases, can be used as fuels outside the plant or within the plant. The oxidizing agent does not come into contact with the thermally stressed parts of the plant. It is thus possible to use oxidizing agents having a high oxygen content of up to 100%. This results in an enormous reduction of flue gases by up to 80%.
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