Development of a method to measure axial and radial dispersion coefficients in multiphase contactors with the volumetric flow modulation technique

开发一种利用体积流量调制技术测量多相接触器中轴向和径向分散系数的方法

• 批准号: 424631424
• 负责人: Professor Dr.-Ing. Uwe Hampel
• 金额: --
• 依托单位: Abteilung Experimentelle Thermofluiddynamik (FWDF)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/424631424?language=en
• 关键词: Development; method; measure; axial; radial

Contactors in the process industry have the task to provide an efficient mass and heat transfer between immiscible fluids for the purpose of separation, enrichment or chemical reaction. For the engineering design of contactors, it is necessary to have the major hydrodynamic parameters. Among them are gas holdup, gas phase velocity and dispersion coefficients. The project deals with a new and universally applicable method to determine the dispersion coefficient via minimal modulation of a volumetric flow rate and phase-synchronous measurement of gamma radiation transmission. Objectives are to further develop this method, analyze fundamental uncertainties of the method, test and assess different sensing principles, provide a comprehensive study on bubble column devices, translate the method towards trickle bed reactors and implement and test an extension of the method to get also the radial dispersion coefficients via a projective gamma radiation transmission measurement.

流程工业中的接触器的任务是在不相容的流体之间提供有效的质量和热传递，以达到分离、浓缩或化学反应的目的。在接触器的工程设计中，主要的水动力参数是必不可少的。其中包括气含率、气相速度和弥散系数。该项目涉及一种新的普遍适用的方法，通过对体积流速的最小调制和伽马辐射透过率的相位同步测量来确定弥散系数。目标是进一步发展该方法，分析该方法的基本不确定度，测试和评估不同的传感原理，对鼓泡塔装置进行全面的研究，将该方法移植到滴流床反应堆，并实施和测试该方法的扩展，以通过投射伽马辐射传输测量获得径向色散系数。