Tubular reactors—non-isothermal operation

In designing and operating a tubular reactor when the heat of reaction is appreciable, strictly isothermal operation is rarely achieved and usually is not economically justifiable, although the aim may be to maintain the local temperatures within fairly narrow limits. On the assumption of plug flow, the rate of temperature rise or fall along the reactor d77dz is determined by a heat balance 

Difference between Heat trans- Heat released (in steady 

To obtain the temperature and concentration profiles along the reactor, equation 1.40 must be solved by numerical methods simultaneously with equation 1.35 for the material balance. 

From a general point of view, three types of expression for the heat transfer term can be distinguished  

For a homogeneous tubular reactor, the pressure drop corresponding to the desired flowrate is often relatively small and does not usually impose any serious 

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