文献类型：期刊文献

中文题名：含尘气泡形变及相互作用对颗粒脱除率的影响

英文题名：Influence of Dust-Containing Bubble Deformation and Interaction on Particle Removal Efficiency

作者：梁纤[1];潘伟童[1];陈雪莉[1]

机构：[1]华东理工大学国家能源煤气化技术研发中心,上海煤气化工程技术研究中心,上海200237

年份：2022

卷号：48

期号：2

起止页码：156

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：Scopus;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：国家重点研发计划(2017YFB0602601)。

语种：中文

中文关键词：含尘气泡;气泡形变;颗粒脱除率;数值模拟;VOF-DPM

外文关键词：dust-containing bubble;bubble deformation;particle removal efficiency;numerical simulation;VOFDPM

摘要：基于流体体积-离散相模型(VOF-DPM)耦合方法,研究了初始静止液体中含尘单气泡和并行含尘双气泡的上升过程及其形变和相互作用对颗粒脱除率的影响。结果表明,上升气泡形变对固体颗粒的脱除具有增强作用,不同粒径颗粒在不同尺寸气泡中的脱除率差异明显。不同尺寸并行双气泡在上升过程中的相互作用对颗粒脱除的影响存在差异,8~10 mm双气泡的相互作用强化了1μm颗粒的脱除,而12~14 mm双气泡的相互作用则弱化了1μm颗粒的脱除。
Bubbling contact scrubbing is an important method for the separation and purification of gas-solid wet scrubbing. Dust-containing bubbles are the unit dust collectors of bubbling contact scrubbing, in-depth research on the operating characteristics of dust-containing bubbles will provide important theoretical support for the efficient removal of fine particles and the optimal design of bubbling scrubbers. Based on the volume of the fluid-discrete phase model(VOF-DPM) method, the rising process of the dust-containing single bubble and the parallel dust-containing double bubble in the initial static liquid and the effect on the particle removal efficiency are studied. Results show that smaller bubbles have complex deformations and irregular oscillations, with higher deformation strength;when the bubble size is greater than 12 mm, the shape change is suppressed, the rising bubble deformation has an enhanced effect on the removal of solid particles, and smaller size bubbles have a higher particle removal efficiency due to complex morphological changes. The removal efficiency of different size particles in different size bubbles is significantly different, and there is a suitable bubble size range for efficient removal. When the initial distance between parallel dustbearing double bubbles is constant, their ascending process in the initial liquid state presents a "close-separate-close" cycle. The effect of the interaction in the process on particle removal is different within different size parallel double bubbles, the bubble interaction can enhance the particle removal within a certain size range. The 8-10 mm double bubble interaction strengthens the removal of 1 μm particles, while the 12-14 mm double bubble interaction weakens the removal of 1 μm particles.