回分式振動流動層による石炭灰中の未燃炭分の低減
1988 年 25 巻 11 号 p. 732-738
詳細
1988 年 25 巻 11 号 p. 732-738
This paper is concerned with the removal of unburned carbon from fly-ash with a continuous density distribution by means of a fluidized bed with tapping.
It is indicated that tapping the fluidized bed is effective maintaining a good fluidization state of fly-ash and to promote the segregation of unburned carbon. The segregation takes place mainly place due to the apparent density difference between fly-ash with more unburned carbon content and other fly-ash. It is further shown that the segregation process is approximated by the first order rate equation under the condition of optimum fluidization velocity, which is in the range 1 to 4 times the minimum fluidization velocity.
