to main test pageIdeal batch STR and continuous ideal TFR are 'brothers'
in the feature 'not stationary in space and time' - whereas the ideal
CSTR is 'stationary in space and time'**. The TFR is a continuous
reactor whereas the STR works batch, - but they are primarily equivalent in
'space time' for a reaction engineering problem, i.e. you can not say 'a batch
STR is not so good as a TFR', - the only difference is that the operation mode
of the TFR is 'continuous'. You conclude that also from the fact that the
solution of the kinetic differential equation for the 'Batch' can be overtaken
from the TFR merely by transformation of the time coordinate to the length
coordinate (via the reactor volume and the flow rate = hydrodynamic residence
time!!). see further details (logistic
equation of TFR and STR)
**: this plays a role when dealing
with the evaluation of the 1/r(U) vs. U plot for the
space time. Here is the integral (area) under the function 1/r(U) a measure for
the space time in the 'not stationary in space and time' reactor types ( batch
STR, TFR), - whereas the space time for the CSTR is the area of the rightangle
'spanning over the value of 1/r(U) at the upper value of conversion and the
delta conversion span (x axis)', which is normally a very much higher value
(and hence the 'problem' of the CSTR!! - the CSTR needs space(time)
!)
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