General startup steps for catalytic cracking
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Reverse regeneration process: Start the main fan → Heat the auxiliary combustion chamber to 550°C for the regeneration system, and to 400°C for the settler → Feed steam into the reactor → Maintain a pressure in the settler that is 10–20 Kpa higher than that in the regenerator → Add catalyst rapidly → Heat up by injecting oil → Add more catalyst → Fluidize both units → Fluidize only one unit; remove the blind flange from the oil vent line → Switch to steam sealing for feeding into the distillation tower → Ensure normal fluidization in both units → Start feeding material → Adjust operations accordingly
Removing the large blind plate can be done first, making the operation a bit simpler
I didn’t understand. Please be more detailed, thank you