Reactor with Recycle Stream

This Demonstration depicts a reactor process with a recycle stream. Species is fed to the process at 100 mol/hr and combines with a recycle stream also containing only entering the reactor. The competing reactions taking place in the reactor are:
(desired product)
(undesired side reaction)
The recycle ratio is the ratio of the recycle flow rate to the fresh feed flow rate. The reactor conversion is a measure of the fraction of entering the reactor that is consumed. Selectivity is the ratio between the amount of desired product produced compared to the undesired side product from the reactor. These can be adjusted to affect the overall conversion of reactant in the process and yield of . A negative flow rate of in the exiting product stream indicates impossible operating conditions. The separation unit is considered a black box, and only is recycled.


  • [Snapshot]
  • [Snapshot]
  • [Snapshot]


The recycle ratio is recycle flow / fresh feed flow.
The yield is moles of the desired product () / moles of the fresh feed ()
The reactor selectivity is moles of the desired product () / moles of the undesired product ()
The reactor conversion is (moles of fed into reactor minus moles of out of reactor) / moles of fed into reactor
The overall conversion is (total moles fed in minus total moles going out) / total moles going out
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