Patent ID: 9701919
Date: 2017-07-11
CPC Classifications: C10L

Claim:
1. A coal inactivation processing apparatus that inactivates coal using process gas that contains oxygen, comprising: a rotary kiln assembly for passing the coal from a base end side to a distal end side in the rotary kiln assembly while rotating to agitate the coal; base end side process gas supply means for supplying the process gas to the base end side of the interior of the rotary kiln assembly; distal end side process gas supply means for supplying the process gas to the distal end side of the interior of the rotary kiln assembly; process gas oxygen concentration adjusting means for adjusting the oxygen concentration of the process gas supplied to the interior of the rotary kiln assembly cooling means for cooling the coal in the interior of the rotary kiln assembly from the base end side to the distal end side in the rotary kiln assembly; process gas discharge means for discharging the process gas used in the interior of the rotary kiln assembly, and circulation means for circulating the process gas discharged by the process gas discharge means to the base end side process gas supply means; wherein the process gas discharge means includes base end side process gas discharge means provided on the base end side of the rotary kiln assembly, and distal end side process gas discharge means provided on the distal end side of the rotary kiln assembly, and the circulation means includes switching means for switching a connection between the base end side process gas discharge means and the base end side process gas supply means, and a connection between the distal end side process gas discharge means and the base end side process gas supply means.