Powder Technology, Vol.367, 326-335, 2020
Impact of local fluidized bed hydrodynamics on the distribution of liquid sprayed into the bed
In industrial Fluid Coking (TM) processes, wet agglomerates formed with coke particles flowing down from the spray regions to the stripper section cause fouling of the stripper sheds, which is a major operating problem. The objective of this work was to determine how to reduce agglomeration by increasing the superficial gas velocity, modifying the gas distributor configuration, or adding internals such as baffles. All these approaches were able to reduce agglomeration. Increasing the superficial gas velocity from 0.18 to 1 m/s reduced the proportion of the injected liquid that was trapped in agglomerates by 50%. Concentrating the gas bubble flow to the first half of the jet cavity with a baffle provided a further reduction in liquid trapped by 12%. (C) 2020 Elsevier B.V. All rights reserved.