Method and apparatus for preheating particulate material

Heating – Processes of heating or heater operation – Including passing – treating or conveying gas into or through...

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432 37, 432 98, 432106, F27B 1518, F27B 940, F27B 702, F27D 108

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active

057794677

ABSTRACT:
A preheating apparatus for particulate material includes a plurality of vertical chambers, a temperature sensor within each chamber and a particulate discharge mechanism. Each chamber is segregated from an adjacent chamber by a vertical wall and includes a material inlet for receiving particulate material, a material outlet for discharging particulate material, a gas inlet for receiving a gas, and a gas outlet for exhausting gas. The temperature sensor is located within a chamber so as to sense temperature of the gas being exhausted from each chamber. A particulate discharge mechanism discharges particulate material within each chamber through the material outlet, with a flow rate adjusted as a function of temperatures sensed by the temperature sensor. A method for preheating particulate material includes sensing temperature of the gas existing each chamber and adjusting a flow rate of the particulate material through each chamber as a function of sensed temperature of each chamber.

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