摘要
工业鼓泡塔内构件的优化设计是实现高效热-质传递及反应器规模化放大的核心要素。基于数值模拟技术,首先,通过理论分析与模型验证,精准筛选出能够科学表征带内构件鼓泡塔内流体动力学特性的数学模型;其次,聚焦换热管、气体分布器等典型内构件,考察了不同换热管数量下的气含率分布特性与液体轴向速度的变化,均发现换热管数量的最优值在10根左右;再次,对工业常用的两种气体分布器进行模拟,研究发现筛板式气体分布器对气体分布与液体流动的影响优于环形气体分布器;最终,提出了鼓泡塔内气体分布器及换热管的优化方案。该研究成果有助于推动多相流理论发展,为工业气-液鼓泡塔的设计与优化提供理论依据。
The optimized design of internals of industrial bubble columns is a core element for achieving efficient heat and mass transfer and scaling up reactors.Based on numerical simulation techniques,a systematic study of the bubble column has been conducted.Firstly,the mathematical models that can scientifically characterize the fluid dynamics is determined.Secondly,focusing on typical internal components,the gas holdup distribution and liquid axial velocity were investigated indicated that the optimal number of heat exchange tubes was around 10.Further simulations were conducted for two gas distributors.It was found that the perforated plate gas distributor exhibited superior impact on gas distribution uniformity and liquid flow patterns.Finally,an optimized design for the gas distributors and heat exchange tubes is proposed.The results are helpful to promote the development of multiphase flow theory and provide a theoretical basis for the design of industrial gas-liquid bubble columns.
作者
马燕
华骥
丁芙蓉
刘海龙
李建涛
Ma Yan;Hua Ji;Ding Furong;Liu Hailong;Li Jiantao(College of Chemistry and Chemical Engineering,Ningxia University,Ningxia,750021)
出处
《当代化工研究》
2025年第12期182-184,共3页
Modern Chemical Research
基金
国家自然科学基金青年科学基金“耦合折流-旋流的新型BDO浆态床内流动-传递-反应特性研究”(项目编号:22308171)
宁夏回族自治区重点研发计划项目“高产能费托合成浆态床工艺技术开发”(项目编号:2024BEE02039)
大学生创新创业训练计划项目“气液鼓泡床内多相流动特性的CFD模拟研究”(项目编号:S202410749113)。
关键词
鼓泡塔
多相流
内构件
bubble column
multi-phase flow
internal
