Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1988-06-28
1990-09-18
Chaudhuri, Olik
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
423449, 423460, 502 55, 502416, C01B 3102
Patent
active
049577212
ABSTRACT:
A method and apparatus for reactivating spent granular activated carbon is the subject of this invention. The carbonaceous material is to be activated is fed to a drying zone where it is dried until incoming air and recycle gases fluidize the drying zone thus causing the dried material to be pneumatically conveyed to the regeneration or activation zone. In this zone, the temperature is raised to effect the oxidizing reactions thereby volatilizing at least some of the contaminants while converting residual carbon to carbon monoxide and hydrogen. Some of the produce gases from the drying and regeneration zones are utilized to fluidize both of these zones and the remaining gases are directed to the afterburner where combustibles are consumed. The product gases from the afterburner are then directed to a conditioning zone where combustible fuel is introduced so as to consume any residual oxygen. The conditioned gas is then recycled to the regeneration zone where it fluidizes the regenerated produce which is then pneumatically conveyed out of the regenerator container.
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Lonsinger Deborah A.
Lonsinger Jack J.
Chaudhuri Olik
Kunemund Robert M.
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