Optimization adjustments for low-volume production of catalytic devices

During low-load operation, as the feed rate and gas volume decrease, the compressor should reduce its speed appropriately to increase the backflow rate and maintain control over the reaction pressure. Due to the lower processing volume, the amount of coke formed is reduced; therefore, the heat extraction equipment in the regenerator should be adjusted to a lower level in order to maintain the bed temperature of the regenerator. Additionally, the reaction temperature should be controlled manually, and the main air flow rate to the regenerator should be reduced accordingly. Due to the reduced feed volume, appropriate adjustments are made to the various reflux streams in order to maintain vapor-liquid equilibrium; the output volume of each product is reduced accordingly, and operational adjustments are carried out to keep the liquid levels in the various towers and containers relatively stable.

Your question is quite complex, with many aspects that need to be adjusted. As mentioned above, the control of the turbine speed and counter-rotation is likely the most critical aspect. Of course, there are other elements as well that require adjustment. Considerations should be given to safety, environmental protection, quality, and efficiency (energy consumption) when addressing these issues. If one has several years of experience as an operator or workshop supervisor, adjusting the operations for low-load operation shouldn’t be a problem; adjustments still need to be made based on the specific conditions of one’s facility.

Is it possible to reduce the pressure in the anti-reaction system a bit?

The processing volume decreased, which in turn led to a reduction in the main air flow; as a result, the pressure in the regenerator also decreased. To maintain an appropriate differential pressure between the two units, the pressure in the settler also had to be reduced accordingly

Your view is not appropriate. It is correct that as the processing volume decreases, the main air flow also decreases accordingly. However, the control logic for the regeneration pressure involves hierarchical control through the regulating butterfly valve at the inlet of the flue gas fan and the double-acting slide valve; it is possible to reduce the opening of the flue gas butterfly valve as needed, and increase the motor power to ensure the stable operation of the main fan. The reaction pressure can be managed by adjusting the speed, while the control of backflow is ensured by keeping the differential pressure between the two devices within the allowable design range.