Formation of Mixing and Reaction Front Macrostructures

The plane front is the most favourable type for fast chemical reactions with low MW compounds. This mode is intermediate between the torch and drift, due to the strongly developed turbulence in reactant mixing zone 1 (coaxial supply) and zone 2 (radial supply). The plane front is characterised by the homogeneity of the reaction flow composition along the reactor radius, which is typical of the quasi-plug flow mode in turbulent flows. 

Reactant introduction method yjy. Reaction front type 

The quasi-plug flow mode (plane front of reaction) is the most important condition for commercial production. The conditions of its creation were analysed and the mixing process of the two reacting liquids, within the K-e turbulence model, was mathematically simulated [7]. The results showed that during fast chemical reactions, the quasi-plug flow mode in turbulent flows is obtained due to the carry-over of the initial component mixture and/or reaction products into the reactant introduction 

The torch front and plane front are also formed during the simple mixing of coloured flows without any chemical reactions [8-11]. Thus, these fronts of liquid flow mixing can appear both during fast chemical reactions and without any reactions. This fact led to further investigation into the influence of the reaction rate constant on the conditions of quasi-plug flow mode formation in turbulent flows (plane front of reaction). Solutions of reactants were prepared which interacted with each other, at different rate constants, with the formation of coloured products these solutions were introduced into the tubular reactor for the formation of reaction front macrostructures. The second-order reactions, which occur at rate constants in the range of = 10 -10 1/mol-s, were studied  

The chemical process appeared to make a substantial contribution to the conditions of the corresponding macroscopic reaction front formation, during the mixing of the 

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