The catalytic raw materials become heavier
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As the catalytic feedstock becomes heavier, should the reaction temperature be increased or decreased? Thank you!
Generally, the reaction temperature is increased, because a higher specific gravity indicates an abundance of heavier components, which makes cracking more difficult. Raising the reaction temperature also increases the fuel-to-oil ratio, thereby improving its cracking performance
Increasing the reaction temperature is advisable, and it is best to increase the reagent-to-oil ratio as well
Based on the thermal balance of the regenerator, improve the atomization effect of the nozzle, reduce the preheating temperature of the feedstock, and increase the oil-to-feed ratio. The reaction temperature should remain constant or be reduced appropriately; there is no need to overly focus on the product distribution. The decision should be based primarily on the properties of the raw materials. The heavier the raw materials, the higher the reaction temperature needs to be, which in turn increases the production of coke and dry gas, resulting in a lower yield of the desired product.