Study On The Coarse Slime Solid-liquid Fluidized Bed Desulfurization Separation Theory And Separation Condition Optimization

With the expansion of exploring coal using machine,more and more fine coal turn outs .its separation has become a serious problem。TBS has widely been used because of its advantage compared with other various fine coal separation equipment。Hennan Polytechnic Uniwersity develops the Damping Pulse Jamming Bed Separator facing the disadvantages of traditional TBS , theory is the base of developing equipment.hindered settling theory is the base of TBS,This paper analyses TBS theory using coarse slime of 3-1.5mm,1.5-0.9mm,0.9-0.45mm,0.45-0.2mm size from Yan-mazhuang ,and last Allen formula and the Richardson and zaki empirical formula were chosen to calculate the terminal velocity of coarse slime free falling and hindered settling in the fluidized bed respectively;then analyses the relationship between free falling and hindered settling and particle character , the result is :the free falling velocity increases with the size and density increasing,hindered settling velocity becomes more and more affected by density and less and less affected by paticles with the concentration increasing,the parameters(flow,frequency,amplitude)of Damping Pulse Jamming Bed Separator are optimized according to 3-1.5mm,1.5-0.9mm,0.9-0.45mm,0.45-0.2mm size from Yan-mazhuang using Design-Expert experiment design software.and finally the optimized parameters (flow,frequency,amplitude)turns out ,according to comparison between flotation and TBS experiment ,the best technology of separating the coarse slime of 0.45-0.2mm size is TBS,The more reasonable technology process is adviced ,according to the existing information.