The control problem of storage capacity in stripping section
Thread Content
When the ratio of agent to oil is increased in the coaxial single-stage countercurrent regeneration of the catalytic cracking unit, we know that the ratio of agent to oil increases. At this time, if the amount of stripping steam does not increase or the residence time of the stripping section does not change, will the coke yield increase? When increasing the agent-to-oil ratio, is it necessary to increase the amount of stripping steam or increase the storage capacity of the stripping section to extend the stripping time? What are the basis for controlling the storage capacity in the stripping section?
The amount of stripping steam can be increased appropriately, but it cannot be used as a means of adjustment. It mainly depends on whether there is a change in the bed temperature and the main air volume, and whether there is a change in the carbon setting of the regenerant before making adjustments.