Fluidization state of the feed line
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What is the fluidization state in the stripping section and the raw catalyst riser of a coaxial catalytic unit?
In recent years, catalytic cracking units have faced safety hazards such as increased operational difficulties, shortened startup cycles, and reduced power generation by the turbine units, due to wear and tear on the equipment in the catalyst slurry line. By analyzing the operating conditions of areas such as the stripper section of the settler, the loose pipelines, and the pressure measurement tubes in the catalyst slurry riser, the main causes of wear in this line were identified. Appropriate modifications were then made to the equipment structure, thereby preventing the negative impacts that could arise from damage to this line as the startup time increases. This approach also holds practical value for other coaxial catalytic cracking units.