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Characterization of mixing and residence time distributions in nozzle‐type reactors
Author(s) -
Coker Akintunde Kayode,
Jeffreys Geoffrey Vaughan,
Mumford Clive James
Publication year - 1989
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270120136
Subject(s) - residence time distribution , nozzle , continuous stirred tank reactor , mixing (physics) , residence time (fluid dynamics) , tracer , plug flow , plug flow reactor model , flow (mathematics) , chemistry , volumetric flow rate , nuclear engineering , mechanics , materials science , analytical chemistry (journal) , process engineering , thermodynamics , chromatography , engineering , physics , nuclear physics , geotechnical engineering , quantum mechanics
Studies of flow characteristics and residence time distribution, (RTD), have been undertaken in a range of geometrically similar, laboratory nozzle‐type reactors. High‐speed cine‐photography was employed to record the complex phenomena of liquid mixing in the reactor and also to record on film the colour of an injected tracer solution leaving in the effluent. A novel atomic absorption spectrophotometric (AAS) technique was applied to transform the results of the latter film into response curves. This technique provide detailed quantitative data on the residence time distributions (RTD) for different feed rates. A multiparameter model, comprising a network of CSTR's and plug flows, was developed to simulate the experimental response data. Good agreement was obtained between model predictions and experimental results. The experimental technique and theoretical approach are recommended for analyzing the flow patterns and mixing mechanisms in such reactors.