Abstract 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/Nm3–3.6 L/Nm3 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.

中文翻译：

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基于CFD模拟的新型喷雾分散脱硫塔运行参数及设计优化

摘要 在这项工作中，对一种新型的两级二氧化硫吸收塔，即喷雾分散塔进行了模拟，该塔由作为第一阶段的喷雾段和作为第二阶段的气泡段组成。采用计算流体动力学(CFD)方法研究了喷雾分散塔的脱硫性能。经计算，预测结果与实测结果吻合较好，验证了仿真模型的可靠性。操作参数优化表明，合适的管道浸入深度和液气比分别为 0.14 m–0.16 m 和 3.03 L/Nm3–3.6 L/Nm3，以实现更高的能源节约和经济节约。在最佳气泡段，与原始状态相比，多相流和化学反应值达到准静态所需的时间更少。总体来看，优化喷淋段SO2去除效率比原喷淋段高3%，优化泡段脱硫效率比原泡段高8%。