Hydrodynamic structure of reaction mixture movement

The measuring of flow speed in any point of industrial apparatus is very complicated, and sometimes practically impossible. So, one can determine hydrodynamic structure of reaction mixture movement indirectly, in particular by studying of fluid particles distribution by their residence times in reaction zone. For measuring of aleatory variable, i.e. particle residence time in apparatus, this particle should be marked in some way allowing to register its entering and coming out of apparatus and to receive concentration curve of flow at the outlet. This curve is called output curve or response curve [14, 15]. 

One can hardly recognize the mechanism of processes occurring in apparatus using such approach because real speeds field in it is not known. That is in this case apparatus is considered as black box . At the same time such analysis method of flow structure in reaction zone is easy enough. Quantitative data processing is essentially simplified because they deflnite the function of only one variable - time. Furthermore, the data of residence times distribution guarantee reliable estimation of real flow structure in apparams, i.e. allow to look into black box [3,7,16]. 

Distribution of reagents residence times in reaction zone is described by dependence [17]  

Here Ci - concentration of reagents with residence time 15 in reaction zone. 

Experimentally received response curves are convenient to present by derived distribution curve by residence time in non-dimensional coordinates C-0 that are calculated out of ratios [18] C = CiVp/Co and 0=Xi/t, where Co - amount of introducing indicator, x = VpAv - calculation residence 

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Parameters of hydrodynamic structure of reaction mixture movement in dependence on reactors... 

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