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Abstract
The impinging stream reactor is an efficient equipment for fluid mixing that strengthens the mass and heat transfer in two fluids mixing processes, with potential for many chemical engineering and industrial applications. In this paper, the flow characteristics and concentration distribution of baffle-type impinging stream reactor are analyzed by numerical simulation to optimize the reactor. The influence of different baffle spacing W and baffle aspect ratio λ on the velocity, turbulent kinetic energy and mixing effect of the reactor are explored. It is indicated that the flow regime changed with the inserted baffle in reactor. With the decrease of the baffle spacing and the baffle aspect ratio, the velocity, turbulent kinetic energy and the fluid mixing intensity firstly increase and then decrease. The mixing intensity of the flow field with different baffle spacing is compared, it is found that W = 40mm>W = 60mm>W = 30mm>W = 80 mm. The mixing intensity with different baffle aspect ratios are found that λ=1>λ=1.5>λ=0.75. The baffle-type impinging stream reactors with W = 40 mm and λ=1 have the best mixing effect.
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