How to address the selectivity issue in cascade reactions
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In chemical plants, the one-way yield for many reactions is quite low; therefore, multiple reaction vessels are often connected in series to increase the residence time. So how can reaction selectivity be controlled and the occurrence of side reactions reduced? What methods are generally used for this purpose? Please share your suggestions
In terms of the mechanism itself, it involves changing the concentration or temperature. The temperature is determined by the value of the activation energy in the kinetic equation. For cascade reactions, it is advisable to maintain a high concentration, so tubular reactors are superior to batch reactors; in the case of cascade batch reactors, the number of reactors needs to be determined based on a balance between economic considerations and selectivity.
Here’s the situation: The patent I found indicates that, at a specific temperature and feed ratio, the one-pass yield for this reaction in a fixed-bed reactor is very low. So I thought of using several reactors in series to increase the overall yield, but I’m not sure how to control its selectivity. Could you please explain this to me again? Thank you