Operation parameters and design optimization based on CFD simulations on a novel spray dispersion desulfurization tower

作者：Liu, Jing^*; Tomassone, Maria Silvina; Kuang, Xuyuan; Zhou, Songhua

来源：Fuel Processing Technology, 2020, 209: 106514.

DOI：10.1016/j.fuproc.2020.106514

• Spray dispersion tower
• Flue gas desulfurization
• Numerical investigation
• Two-phase flow
• Structural optimization

In this work, simulations were performed on a novel two-stage SO2 absorption tower, namely, spray dispersion tower which consists of a spray section as the first stage and a bubble section as the second stage. The desulfurization performance of the spray dispersion tower was investigated by Computational Fluid Dynamics (CFD) method. After calculation, the predicted results were in good agreement with the measured results to validate the reliability of the simulation model. @@@ The operational parameters optimization indicated that the appropriate tubes' immersion depth and liquid-to-gas ratios were 0.14 m-0.16 m and 3.03 L/Nm(3)-3.6 L/Nm(3) to attain higher energy and economic savings, respectively. In the optimal bubble section, less time was required for the multiphase flow and chemical reaction values to reach the quasi-static state than that of the original one. @@@ Overall, the SO2 removal efficiency was 3% higher in the optimal spray section than the original spray section, and the desulfurization efficiency was 8% higher in the optimal bubble section than the original bubble section.