| 摘要 |
PURPOSE:To prevent an abnormal increasing in temperature and occurence of agglomeration by a method wherein air for fluidized bed is fed for a specified period of time in case of slump and an intermittent feeding of air for minimum combustion into a cell is performed. CONSTITUTION:A temperature Tmin is sensed by a sensor 12 of a cell B and instruct a controller 10 to feed flowing air having a supplying volume Amin for a period of time T3. Thereby, a temperature in a layer is increased from Tmin by TD2 and in turn a temperature TB20 at the upper part of the layer in the slump cell B is decreased. After that, a supplying of flowing air is stopped until the temperature of layer at the time (d) is decreased again to Tmin. Operation similar to that for increasing temperature in a layer at the time point (c) is performed, and this operation is intermittently repeated. Thus, abnormal increasing in temperature in the slump cell is prevented and agglomeration is prevented to occur. |
