Experimental analysis of volatile liquid injection into a fluidized bed |
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Institution: | 1. Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Department of Chemical and Biochemical Engineering, Western University, London, ON, Canada, N6A 5B9;2. Department of Chemical Engineering and Applied Chemistry, University of Toronto, ON, Canada, M5S 3E5 |
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Abstract: | Experiments were conducted on a lab-scale fluidized bed to study the distribution of liquid ethanol injected into fluidized catalyst particles. Electrical capacitance measurements were used to study the liquid distribution inside the bed, and a new method was developed to determine the liquid content inside fluidized beds of fluid catalytic cracking particles. The results shed light on the complex liquid injection region and reveal the strong effect of superficial gas velocity on liquid distribution inside the fluidized bed, which is also affected by the imbibition of liquid inside particle pores. Particle internal porosity was found to play a major role when the changing mass of liquid in the bed was monitored. The results also showed that the duration of liquid injection affected liquid–solid contact inside the bed and that liquid–solid mixing was not homogeneous during the limited liquid injection time. |
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Keywords: | Liquid injection Fluidized bed Fluid catalytic cracking Hydrodynamics Vaporization |
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