Method for the thermal treatment of waste material, particularly refuse, and a rotary tubular furnace for applying the method
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United States of America Patent
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Jun 30, 1998
Grant Date -
N/A
app pub date -
Sep 28, 1995
filing date -
Sep 29, 1994
priority date (Note) -
Expired
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Abstract
A waste material, particularly refuse, is conveyed through a combustion chamber while simultaneously being mixed and is treated with a gaseous oxidizing agent. The combustion chamber comprises a rotary tubular furnace. The waste material is acted on by the gaseous oxidizing agent, with the volatile combustible constituents of the waste material forming flames with the oxidizing agent. The radiation heat of the flames frees additional volatile constituents of the waste material. The waste material freed of volatile constituents is obtained as refuse coke and the unburnt volatile constituents are obtained as combustible gas. The thermal treatment in the rotary tubular furnace can be continued beyond the freeing of volatile substances. Given an adequate temperature rise, the oxidic constituents of the slag formed are melted, and the latter can be obtained in the form of glass.
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