The Safety Technical Assessment Of Normal Operating Conditions

1 The Safety Technical Assessment Of Normal Operating Conditions 

Two questions are mainly asked if a safety assessment of the undisturbed process is required  

have the reactor and the auxiliary equipment been correctly designed for a new process  

The basis for the assessment is identical in both cases, namely the knowledge of all characteristic values of the chemical reaction itself. These are mainly the heat of reaction and the formal kinetics. In the introduction to Section 4.1 it was shown that a variety of different formal kinetic rate laws may be approximated by a power rate law with sufficient accuracy. In these cases the reaction order n has to be interpreted as an 

In the subsequent steps the procedures to answer the two questions differ. In the first case, the assessment of a newly designed plant, usually the desired conversion, the optimal process temperature and the required production rate are fixed. Also the mode of operation, such as continuous or discontinuous, is predetermined by demands on selectivity and 3deld. The safety evaluation now has to assess, whether or not the parameter combination selected fi om the multi-dimensional space defined by reactor size, initial concentrations, characteristic reaction time as well as coolant and feed temperature can ensure safe operation under normal conditions. 

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