CFD Simulation Of Chrome Yellow Stirred Tank

Chrome yellow has a lot of advantages, such as strong covering power, resistance to solvent and heat, low price and high production. It is widely used to the industries of paint, ink, plastic and rubber. In order to solve the product problem of poor quality with magnifying the reactor from7m3to20m3and40m3, this paper analyzed the velocity, concentration, turbulent kinetic energy, micro mixing time by altering the structure of impeller and bottom. This study supplied an important reference for the improvement of chrome yellow industrial tank.In this paper, process of solid-liquid mixing was simulated by FLUENT. By matching simulation data with result of classical solid-liquid mixing experiment, the selected model was validated reliably with less5%error. Used this model to simulate and select an optimal mixing structure, which is a dished reactor with a PBTD45on the top and a DT-6at the bottom. The inlet location was arranged near DT-6impellers. Combined with simulation and experiment, the optimal mixing speed of lm3and40m3was determined to be140rpm and60rpm respectively. Designed1m3and40m3reactor and simulated their flow situation. Their micro-mixing distributions were in good agreement with small scale simulation. Low standard deviations (<0.2) showed that macro-mixing well. An incorporation model was set up according to the experimental results. The predicted particle diameters of1m3and40m3tank were0.7015and0.6179μm, which can reach the industrial demand of chrome yellow.This paper provides guidance for design and amplification of chrome yellow device. It has been applied to manufacture1m3stirred tank. Sucessfully used CFD simulation to optimize device structure and improve mixing effect. The micro mixing of solid-liquid was researched by FLUENT in our article. There has not been any related literature in China. It is of great reference value in the simulation of solid-liquid suspension.