Furnaces – Process – Treating fuel constituent or combustion product
Patent
1991-12-23
1992-09-01
Yuen, Henry C.
Furnaces
Process
Treating fuel constituent or combustion product
110264, 110244, 110347, F23J 700
Patent
active
051430010
ABSTRACT:
A process for transferring environmentally harmful substances which are easily leachable from openly discarded waste material, and which to a large proportion consists of inorganic material, such as spent spot linings for aluminum electrolysis cells, into gaseous form or into leach stable compounds, includes the steps of heating that the material in finely ground form is heated and in that reagents such as silica, water and oxygen are added in a cyclone furnace (1) which includes a heat source (2) for example a plasma generator, and a cylindrical furnace vessel (10). By feeding the waste material and the reagents via a mixing and prereaction chamber (3) which is located between the high temperature source and the vessel (10), a very high proportion of the added materials are reacted in the furnace. A device for carrying the process into effect includes a cyclone furnace (1) having a high plasma generated (2) tangentially connected to the horizontally arranged cylindrical vessel (1), at one end portion thereof, via a mixing and prereaction chamber (3) into which the waste material and the reagents are injected and super heated before they flow into the furnace vessel (10). At the other end portion of the vessel (10) there is an upper outlet for drawing off formed gaseous material, and a lower outlet (4) for drawing off formed solid and/or liquid material.
REFERENCES:
patent: 4132180 (1979-01-01), Fredrick
patent: 4800825 (1989-01-01), Kuenzly
patent: 4873930 (1989-10-01), Egense et al.
patent: 4920898 (1990-05-01), Solbes et al.
SKF Plasma Technologies
Yuen Henry C.
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