Hello,
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Posted 09 November 2022 - 05:02 AM
Hello,
Posted 09 November 2022 - 06:21 AM
Reducing residence time in reactor will affect product composition where there are multiple reactions. This is commonly seen in steam cracking processes where ethylene yield depends partly on reactor residence time. The 'full recycle, no purge, reaction to completion' premise of your question is confusing. Complete recycling of all fluid would be equivalent to a batch process with infinite residence time. I suggest you develop a material balance using real numbers to get your answer. You should be able to calculate this using a spreadsheet tool if you do not have access to a process simulator.
Posted 14 November 2022 - 07:31 AM
It would depend on the rates of reaction of all the reactions. Increasing temperature could easily speed up the rate of reaction of the unwatned product faster than the wanted products (quite likely if activation energy is higher), also changing temeperature will likely affect the equilibrium position of the other reactions. In some cases larger reactor volumes can be used and run at lower temepartures as this is favourable to the equilibrium position.
The only way to know is consider the rates of reaction of all the reactions and model it. (in excel if neccesary).
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