The feedstock used in catalytic cracking varies in quantity, and the amount of charring also differs; how can the main air flow be adjusted in a timely manner to achieve energy savings?

Adjustment is made based on the temperatures of the dense and dilute phases in the regenerator; the power of the main fan is adjusted to prevent surge and to maintain the pressure in the regenerator

Can the main air flow entering the regenerator be varied? Can the main fan adjust the main air flow in a timely manner?

Sure, the stator vanes are adjusted primarily based on the oxygen content in the flue gas; we use oxygen enrichment for regeneration

Can the stator blades be adjusted automatically and randomly?

Adjust according to the oxygen content in the flue gas after burner charring.

Adjust the main air volume to maintain a constant oxygen level, and adjust the external heat extraction to control the regeneration temperature.

What is the long-term benefit of a set of equipment? Running smoothly! ! ! With such large variations in raw materials and different levels of charring, how can you make adjustments more effectively? Personally, I suggest that you can make a judgment based on the oxygen content; it should generally be higher than the normal value, meaning a slightly oxygen-rich condition. In this case, the relative air volume remains constant, and the degree of charring can be controlled indirectly by adjusting the steam generation rate of the external heat exchanger, rather than by making frequent adjustments to the air volume! We’ve encountered the same problem here before. At first, we also tried to operate as closely as possible to the limits, adhering to various concepts such as saving energy and reducing consumption. But once adjustments have been made, the raw materials change, and further adjustments are needed – which is costly and exhausting, and it tires everyone involved. Later, everyone summarized the method I mentioned above: it involves a relatively small adjustment range, is easy to use in practice, and ensures good stability of the device! There are many factors that influence the operation of a reaction, and we need to learn to identify the key ones. The same principle applies: the smaller the fluctuations caused by operations, the better. The entire system is in a state of balance, and when this balance is disrupted, it must be re-established. The greater the fluctuations, the harder it is to restore balance, and the more damage this causes to the equipment!