Study Of Impinging Stream Technology In Liquid Material Crushing

Micro-nano liquid particles due to its specific surface area and surface energy are more easily mixed with other materials, which has a positive effect on improving material’s macroscopic properties. Firstly, the research status and applications of hyper-pressure impinging stream technology, micro-channel flowing technology and supercritical fluid technology were respectively introduced. Propose a new method combining these advantages for refining the micro-nano liquid particles.Secnodly, the flow process of droplets, the droplets impact the wall and the droplets collided with each other were analysed, which providing the basic theories for refining the micro-nano liquid particles. Based on this theory, four different models of hyper-pressure micro impinging stream reactor were built by Fluent software, and the internal flow field of these models were simulated. The axial velocity distribution, dynamic pressure distribution, velocity distribution in different locations along radial direction, velocity distribution in different locations along axial direction and wall shear stress distribution of different models under the same pressure were studied. The impacting distances and export diameters of the flow field were analyzed, and the structure size of these different models were optimized. Eventually, the best model is obtained.Finally, the experiment platform of ultra-high pressure impinging stream was built. The oil-water mixture and juice as raw materials for the experiment on the impacting process.The experimental results verify the feasibility of ultra-high pressure micro impinging stream reactor. The original data were supplied for refining the micro-nano liquid particles.