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.

在实验室规模的流化床上进行了实验，以研究注入流化催化剂颗粒中的液体乙醇的分布。电容测量用于研究床内液体的分布，并开发了一种新方法来确定流化催化裂化颗粒流化床内的液体含量。结果揭示了复杂的液体注入区域，并揭示了表观气体流速对流化床内部液体分布的强烈影响，这也受到颗粒孔内部液体吸收的影响。当监测床中液体的质量变化时，发现颗粒内部孔隙率起主要作用。