有色设备

In this paper, the working principle and the characterization parameter of aerating performance of the big nozzle sparger are briefly introduced, and the simulation model of the big nozzle sparger is established by using the fluid simulation software based on the actual working conditions. The variation rules of the air injection length, airflow tip diffusion width and the jetting outflow of the big nozzle sparger are studied emphatically under the actual working conditions which are the aeration pressure and immersion depth. It is shown that three performance parameters of big nozzle sparger increase with the increase of the aeration pressure under the same immersion depth, and the effect of the immersion depth on the jetting outflow can not be ignored when the immersion depth reaches the magnitude of the actual immersion depth. Under the same pressure condition, with the increase of the immersion depth of big nozzle sparger, the jetting outflow and airflow tip diffusion width gradually decrease, and the air injection length also gradually decrease. The research of this paper provides important data support for the selection of working parameters of big nozzle sparger in practical application.