The issue of riser pressure drop
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What factors cause variations in the lift tube pressure drop? What are the impacts of being high or low?
The answer to this question is a bit broad. Under normal circumstances, the pressure drop in the lift pipe is designed in advance, but there are so many factors that can affect it in actual operation, right? The properties of the feed materials, the amount of feed material, various types of materials entering the riser, the temperature of the regenerated catalyst, coking in the riser, the atomization condition of each nozzle, the type of cyclone at the riser outlet and its operating conditions, and so on.
It is also related to the distillation tower pressure and the dual valves. . . It is already a designed pressure. Neither too high nor too low is good; if it is too high, the temperature of the lift pipe rises and the cracking reaction intensifies. High gas production. And it exerts pressure on the main wind. Adjust in a timely manner