Heating – Processes of heating or heater operation – Including passing – treating or conveying gas into or through...
Patent
1975-06-10
1977-06-21
Camby, John J.
Heating
Processes of heating or heater operation
Including passing, treating or conveying gas into or through...
432 18, 432 99, 252411R, 252418, F27B 1500
Patent
active
040308766
ABSTRACT:
A method in which activated carbon having a bulk density of at least 0.35, a particle size of 5 to 40 mesh and a water content of 50 to 120% is regenerated by being passed successively through drying, burning and reviving treatment zones of a vertical columnar furnace, which zones are maintained within temperature gradients such as to prevent explosion and oxidation or destruction of the carbon due to overheating while the carbon descends through the zones and is heated by a high temperature combustion gas flowing upwardly through the treatment zones at a rate not exceeding the minimum rate of fluidization of the descending carbon.
The regenerating apparatus or furnace has gas burners mounted thereon to deliver combustion gas tangentially to a header and then to distributing ports arranged circumferentially around and internally of a columnar bed of carbon being regenerated to provide uniform temperature distribution across the bed. In an alternate construction, the columnar bed is annular, headers are provided exteriorly and interiorly of the bed, and distribution ports conduct the combustion gas through the inner and outer walls defining the annular bed.
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Akae Kiyoshi
Kitada Masaya
Uno Yoshiyuki
Camby John J.
Farley Joseph W.
Unitika Ltd.
Yuen Henry C.
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