What is the pressure difference between the two devices?
Thread Content
I would like to ask everyone: How is the pressure difference between the two units in catalytic cracking determined? Is it set at the design stage? During normal operation, is the pressure in the reactor lower than that in the regenerator? And when discharging, must the pressure in the reactor be higher than that in the regenerator?
During normal operation, to ensure that the catalyst circulates and flows in a proper manner, and to maintain an appropriate level of material in the stripping section for safety reasons, the pressure in the regenerator is higher than that in the reactor. During shutdown and unloading, in order to prevent the main air from entering the distillation system and posing a risk of spontaneous formation of iron sulfide, the reactor pressure is kept higher than that of the regenerator; it is acceptable for a small amount of steam to enter the regenerator.