How to improve the yield of catalytic reactors
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How to improve the liquid yield of catalytic units: from operation, equipment, additives, etc
Select an appropriate oil-to-reagent ratio and a suitable reaction temperature
Maximizing the yield of catalysis is a major challenge; we don’t have the capability for that. Once the equipment and processes are determined, the best options can only be found through operational adjustments. Different facilities and different raw materials result in varying conditions, and it’s also important to make use of more advanced technologies. An important point is steady production.
Reply to 3# wgfhao: The type of catalyst can be selected based on the properties of the raw materials, with good activity and selectivity being of course the priorities. For the selection of raw material properties, those with a higher hydrogen content, that is, raw materials containing straight-chain alkanes, are preferable. In terms of operation, select an appropriate reaction temperature and a suitable ratio of reagent to oil. A passivator is added based on the heavy metal content in the raw materials. For fractional distillation stabilization, it is necessary to properly adjust the boiling ranges of each fraction.
A simulation study on the main fractionation tower of a catalytic cracking unit over the years showed that optimizing the operation of the fractionation tower and increasing the secondary reflux load are effective ways to boost diesel production. As a result of these optimization measures, the diesel yield of the unit increased by 4 percentage points, and the quality of gasoline also improved, yielding significant economic benefits.
Ensure stable production, optimize operations, and maintain proper reaction conditions: temperature, material level, reagent-to-oil ratio, and catalyst activity (by replenishing fresh catalyst). Achieve complete cracking, reduce dry gas and coke, and increase liquid yield.