화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.127, 509-522, November, 2023
Influences of operating parameters on uniform mixing behaviors of gas-liquid-solid in novel spouted beds with strengthening components
Influences of integral multi jet(IMJ), swirling blade nozzle(SBN) and longitudinal vortex generators(LVGs) on uniform mixing behaviors of ternary mixture during water vaporization in spouted beds were simulated from the perspective of temperature and velocity fields. To quantitative evaluate the mechanism of water vaporization, temperature uniformity index(Tu), mixing index(IM) and coefficient of variation(CV) were used. Simulation results: the bubble-like distribution of particles caused by LVGs, IMJ and SBN strengthen the gas–solid radial mixing and improve flow “dead zone”. In the upper of system, the promotion of uniformity and mixing quality is SBN > LVGs > IMJ, and LVGs has the most obvious promoting effect on Tu. Moreover, the influences of operating parameters on Tu, IM and mass fraction of H2O(g)(MFH) were investigated. Vgas = 11.2 m/s, Tgas = 520 K, and TWater = 300 K, the liquid–solid mixing quality is the best. In terms of Tu and MFH, Vgas = 11.2 m/s, Tgas = 540 K, and Twater = 400 K have the most obvious effect.