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Development And Study Of Measurement Methods For Jets And Bogging In A Fluidized Bed, Majid Hamidi

Electronic Thesis and Dissertation Repository

In the Fluid Coking process, if the local concentration of liquid is very high, particles may stick together which can eventually result in process upset because of poor fluidization or even defluidization, a condition commonly known in industry as "bogging".

Using a capacitance sensor, the void distribution in a bed of coke particles can be visualized. The voidage fluctuations caused by gas bubbles have been shown to change dramatically as the bed becomes bogged. Therefore, capacitance sensors should be able to predict the bogging condition in fluid cokers.

The first part of the thesis focused on designing noiseless capacitance sensors …