The scrubbing tower plays an important role for gas dedusting in the industry. In this study, the VOF-DPM coupled model is applied to investigate the gas—liquid—solid three-phase flow process in the bottom water chamber of the scrubbing tower. Two gas intake modes of guide-pipe mode and tangential-horn mode are numerically compared. Near the outlet surface, the guide-pipe mode scrubber can obtain lower gas velocity and more uniformly distributed gas phase. This is a good protection for the column tray against being overturned. However, there exists a hydrostatic zone in the guide-pipe mode chamber, this may cause dust to accumulate near the wall. The tangential-horn mode chamber obtains a lower pressure drop and a smaller velocity maximum above liquid level. As a result, to a group of particles range from 50 to 1000 μm, the removal efficiency of the tangential-horn mode scrubber is 88.3%, higher than that of 82.0% of the guide-pipe mode scrubber. The tangential-horn mode performs better in lower pressure drop, higher antiblocking and dust removal ability but worse in protecting the column tray against being overturned. This study offers guidance for the research and design of the wet gas scrubbing chamber.

中文翻译：

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具有两种进气方式的气液固洗涤室的VOF-DPM模拟

洗涤塔在工业中对气体除尘起着重要作用。在这项研究中，VOF-DPM耦合模型用于研究洗涤塔底部水室中的气-液-固三相流过程。数值比较了导管模式和切向喇叭模式的两种进气模式。在出口表面附近，导管式洗涤器可以获得较低的气体速度和更均匀的气相分布。这是防止色谱柱托盘翻转的良好保护。然而，在导管模式腔室中存在静水区，这可能导致灰尘堆积在壁附近。切向角模式腔室在液位上方可获得较低的压降和较小的最大速度。结果，对于50至1000μm的一组颗粒，切角式洗涤塔的去除效率为88.3％，高于导管式洗涤塔的82.0％。切向角模式在较低的压降，较高的抗粘连性和除尘能力方面表现更好，但在保护色谱柱托盘不被倾覆方面表现较差。该研究为湿法气体洗涤室的研究和设计提供了指导。