Research on the performance of gas-liquid atomizing mixer in tubular flow channel with variable cross-section

IF 3.9 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-10-05 DOI:10.1016/j.cep.2025.110576

Huan Sun , Ling-zhen Kong , Jia-qing Chen , Yang Yang , Tong Xie , Qi Li , Chang-he Li

{"title":"Research on the performance of gas-liquid atomizing mixer in tubular flow channel with variable cross-section","authors":"Huan Sun , Ling-zhen Kong , Jia-qing Chen , Yang Yang , Tong Xie , Qi Li , Chang-he Li","doi":"10.1016/j.cep.2025.110576","DOIUrl":null,"url":null,"abstract":"<div><div>The tubular gas-liquid atomizing mixer is a compact and high-efficiency gas-liquid contact device. It generates high-speed gas flow through a variable cross-section channel, atomizes liquid absorbent into micro-nano droplets to enhance gas-liquid mass transfer, and its performance directly determines the achievement of design objectives. This study proposes a tubular gas-liquid atomizing mixer with a \"rhombic cone + boss\" structure. Combining CFD simulation and experimental tests, it investigates the effects of gas Weber number (<em>We<sub>g</sub></em>) and liquid-gas momentum flux ratio (<em>q</em>) on gas-liquid atomization and mixing characteristics. The results show that the variable cross-section channel can increase gas flow velocity and induce intense turbulence inside the tube, promoting the mixing of gas-microdroplet two phases. <em>We<sub>g</sub></em> has a significant impact on droplet size and volume concentration: when <em>Weg</em> increases from 212.46 to 524.64, the droplet size decreases by 46.1 % and the volume concentration increases by 170 %. <em>q</em> affects mixing performance by changing the penetration depth of the liquid jet, with the optimal performance achieved when <em>q</em>=28.79, but its influence on droplet characteristics is weaker than that of <em>Weg</em>. The structural layout of combining variable cross-section flow channel with central bluff body can provide a solution for high-efficiency tubular gas-liquid atomizing mixers, facilitating industrial applications such as natural gas water dew point control.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"219 ","pages":"Article 110576"},"PeriodicalIF":3.9000,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering and Processing - Process Intensification","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0255270125004222","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

The tubular gas-liquid atomizing mixer is a compact and high-efficiency gas-liquid contact device. It generates high-speed gas flow through a variable cross-section channel, atomizes liquid absorbent into micro-nano droplets to enhance gas-liquid mass transfer, and its performance directly determines the achievement of design objectives. This study proposes a tubular gas-liquid atomizing mixer with a "rhombic cone + boss" structure. Combining CFD simulation and experimental tests, it investigates the effects of gas Weber number (We_g) and liquid-gas momentum flux ratio (q) on gas-liquid atomization and mixing characteristics. The results show that the variable cross-section channel can increase gas flow velocity and induce intense turbulence inside the tube, promoting the mixing of gas-microdroplet two phases. We_g has a significant impact on droplet size and volume concentration: when Weg increases from 212.46 to 524.64, the droplet size decreases by 46.1 % and the volume concentration increases by 170 %. q affects mixing performance by changing the penetration depth of the liquid jet, with the optimal performance achieved when q=28.79, but its influence on droplet characteristics is weaker than that of Weg. The structural layout of combining variable cross-section flow channel with central bluff body can provide a solution for high-efficiency tubular gas-liquid atomizing mixers, facilitating industrial applications such as natural gas water dew point control.

Abstract Image

查看原文本刊更多论文

变截面管状流道气液雾化混合器性能研究

管状气液雾化混合器是一种紧凑、高效的气液接触装置。它通过变截面通道产生高速气流，将液体吸收剂雾化成微纳液滴，增强气液传质，其性能直接决定了设计目标的实现。本文提出了一种“菱形锥+凸台”结构的管状气液雾化混合器。结合CFD模拟和实验测试，研究了气体韦伯数（Weg）和液气动量通量比(q)对气液雾化和混合特性的影响。结果表明，变截面通道可以提高气体流速，引起管内强烈的湍流，促进气-微液滴两相的混合；Weg对液滴尺寸和体积浓度有显著影响，当Weg从212.46增加到524.64时，液滴尺寸减小46.1%，体积浓度增加170%。q通过改变液体射流的穿透深度来影响混合性能，当q=28.79时混合性能最佳，但对液滴特性的影响弱于Weg。变截面流道与中心钝体相结合的结构布局，为高效管式气液雾化混合器提供了解决方案，便于天然气水露点控制等工业应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Chemical Engineering and Processing - Process Intensification 工程技术-工程：化工

CiteScore

7.80

自引率

9.30%

发文量

408

审稿时长

49 days

期刊介绍： Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.