Effect of spray nozzle attachment geometry on rate of liquid released from agglomerates produced by gas-atomized liquid injection into a fluidized bed

摘要

Liquid injection into a fluidized bed is employed in several chemical processes in order to maximize contact between liquid reactants and solid particles. For example, in the Fluid Coking process, droplets contact the bed particles and form wet agglomerates that impair heat transfer from the hot bed to the reacting liquid, slowing down its endothermic cracking reactions. Agglomerate formation, thus, results in reduced reactor operability and a lower yield of valuable liquid product. The objective of this paper is to test the effect of different nozzle attachments on the rate at which moisture is released from agglomerates in a large scale fluidized bed.