Non-gradient reactor

Non-gradient reactor. Non-gradient reactors have many different names and types, and can be roughly divided into external circulation, internal circulation and continuous stirred kettle -style by the gas flowing mode. However, it is necessary to achieve the flow phase with constant temperature and ideal mixing, and the elimination of mass transfer resistance between phases in reactor. At the same time, on the premise of elimination of the gradient of temperature and concentration, it should be the same that the reaction rate equation is obtained from the circulation flow system or the ideal hybrid system. 

The characteristic of external circulation of non-gradient reactor, also known as plug-shaped reactor or flow cycle device, recycles gas after reaction through the loop in outside of reactors to carry out cycle. Generally, circulation pump is used to drive gas circulation as shown in Fig. 7.2. 

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