This study uses computational fluid dynamics to survey the gas‒liquid flow hydrodynamics of a self-priming venturi scrubber with and without ring baffles. Based on the simulation results, we explore how the structure and configuration parameters such as baffle height, opening-area ratio, and baffle thickness affect the injection flow rate and the homogeneity of the gas‒liquid mixture. In addition, we report the best structure and configuration parameters for the ring baffle. The best position for the ring baffle is at nearly 7/16 of the length of the diffuser above the throat. Having the baffle too near the throat causes large pressure loss, decreasing the injection flow rate. The decrease in opening-area ratio leads to a lower injection flow rate and a more homogeneous gas‒liquid mixture. The optimal value depends on the requirement of the injection flow rate. For the baffle thickness, 5 mm is recommended; an overly thick baffle decreases the homogeneity of the gas‒liquid mixture near the throat. All structure parameters and configuration parameters must satisfy the requirement imposed by the injection flow rate and scrubbing efficiency.

这项研究使用计算流体动力学来研究带有和不带有环形挡板的自吸式文丘里洗涤器的气-液流动流体动力学。基于仿真结果，我们探讨了挡板高度，开口面积比和挡板厚度等结构和配置参数如何影响注入流速和气液混合物的均匀性。此外，我们报告了环形挡板的最佳结构和配置参数。环形挡板的最佳位置是位于喉咙上方的扩散器长度的近7/16。挡板太靠近喉咙会导致很大的压力损失，从而降低进样流速。开孔率的降低导致注入流速降低，气液混合物更加均匀。最佳值取决于注入流量的要求。对于挡板厚度，建议使用5毫米；太厚的挡板会降低喉部附近气液混合物的均匀性。所有的结构参数和配置参数必须满足注入流量和洗涤效率的要求。