Batch-wise operated stirred tank reactor

Batch Wise-Operated Stirred Tank Reactor (BSTR)... 

Figure 2.3 Batch-wise operated stirred tank reactor (BSTR).

The ability to separate a mixture of two liquid phases is critical to the successful operatiou of mauy chemical aud petrochemical processes. Besides its obvious importauce to liquid-liquid extractiou aud washing operations, liquid-liquid phase separation can be a critical factor in other operations including two-liquid-phase reaction, azeotropic distillation, and industrial wastewater treatment. Sometimes the required phase separation can be accomplished within the main process equipment, such as in using an extraction column or a batch-wise, stirred-tank reactor but in many cases a stand-alone separator is used. These include many types of gravity decanters, filter-type coalescers, coalescers filled with granular media, centrifuges, and hydrocyclones. 

Different types of reactors are appfied in practice (Fig. 1.14). Stirred tank reactors (STR), very often applied for homogeneous, enzymatic and multiphase heterogeneous catalytic reactions, can be operated batch-wise (batch reactor, BR), semi-batch-wise (semi-batch reactor, SBR) or continuously (continuous stirred tank reactor, CSTR). 

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