CFD Based Analysis and Improvement of the Flow Field of Stirred Tank Reactor for Crystallization

doi:10.16182/j.issn1004731x.joss.201805036

Abstract

Abstract: The computational fluid dynamics (CFD) method is adopted to analyze the flow field of 1L stirred tank reactor for crystallization. A popular CFD software named FLUENT is used to analyze the influence of a single layer turbine agitator on the flow field in a stirred tank reactor. The standard turbulence model of k-ε is employed to simulate a three-dimensional single-phase flow field of water solution. Simulation studies indicate that the simulated flow field is consistent with real distribution of the flow field, while it is seen that uniform blending can be achieved in the lower and middle parts of the 1 L stirred tank reactor, but the flow field in the upper part is not uniform. To solve the problem, dual impellers are proposed for stirring so as to maintain a uniform speed for both the lower and upper parts of the reactor. Simulation results show that the two flow fields generated by the dual impellers can be well connected, and the blending effect is obviously better than that of traditional single-impeller style.

Key words: stirred tank reactor, computational fluid dynamics, FLUENT, single-phase flow field, numerical simulation

CLC Number:

TP391.9

Ma Zewen, Liu Tao, Sun Xudong. CFD Based Analysis and Improvement of the Flow Field of Stirred Tank Reactor for Crystallization[J]. Journal of System Simulation, 2018, 30(5): 1900-1907.

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