Stirred tank reactors with internal cooling coils

Figure 6.9 Temperature distribution in a jacketed stirred tank reactor with internal cooling coils. The temperature ranges from 10.00 to 14.72 °C.

A.8 DESIGN OF STIRRED TANK REACTORS WITH INTERNAL COOLING COILS... 

S3] A process for the oligomerization of ethylene for the production of linear a-olefins had to be developed in stirred tank reactor assuming isothermal conditions and was executed in the kinetic regime. The latter was assured by increasing the rotational speed of the impeller until the rate of reaction did not increase further. The autoclave reactor was heated by an external blanket and supplied with cooling water circulation through an internal coil. 

In most exothermic processes carried out in a stirred tank reactor the bulk of the heat of reaction is carried away by external cooling, either via the wall of the reactor, or by means of an internal or extenal heat exchanger. Internal heat exchangers are usually vertical tube bundles or coils (spirals), mounted coaxially with the impeller shaft. When external heat exchangers are used, the reactor contents are pumped through it and back into the reactor. We consider here the CSTR the semi-batch reactor is treated in section 8.4.4. The steady-state heat balance for a first order reactor in a cooled CSTR can be written as follows ... 

---