Reaktionstechnische und messtechnische Untersuchung stofftransportlimitierter, heterogenkatalysierter zweiphasiger Reaktionen im Kapilar-Mikroreaktor

毛细管微反应器中材料传输限制、非均相催化两相反应的反应工程和计量研究

• 批准号: 36412523
• 负责人: Professor Dr. David W. Agar
• 金额: --
• 依托单位: Lehrstuhl für Chemische Verfahrenstechnik (CVT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/36412523?language=en
• 关键词: Reaktionstechnische; und; messtechnische; Untersuchung; stofftransportlimitierter

Suspension catalysis, utilising catalyst particles in the size range 1-100 µm, has not yet been applied in microreactors, despite promising features in terms of mass- and heat transfer as well as facile removal and regeneration of the catalyst. During the first phase of the project, the techniques and equipment necessary for this reactor concept were developed. A reactive measurement technique for ascertaining liquid-solid mass transfer has been developed. However, the results indicate that the interaction between fluid flow and particle motion leads to an inadequate degree of suspension, lowering fluid-particle mass transport performance and further measures to enhance particle motion are necessary. In the project phase which is the subject of this application, it is intended to study various technical approaches for making the suspensions more homogeneous. Further intensification can be achieved by increasing particle concentrations through novel techniques of slug generation, dealt with in sub-project and enabling a close cooperation in this area. Moreover, intensifying heterogeneously catalysed liquid-liquid reactions by harmonising the wettability behaviour of the catalytic particles shall be investigated and the effectiveness of the measures adopted determined with the help of a technically challenging chemical reaction system.

悬浮催化，利用催化剂颗粒的尺寸范围为1-100微米，尚未应用于微反应器，尽管在质量和热传递以及催化剂的容易去除和再生方面具有有前途的特征。在项目的第一阶段，开发了这一反应堆概念所需的技术和设备。发展了一种确定液固传质的反应式测量技术。然而，结果表明，流体流动和颗粒运动之间的相互作用导致的悬浮程度不足，降低流体-颗粒的传质性能和进一步的措施，以提高颗粒运动是必要的。在作为本申请主题的项目阶段，旨在研究用于使悬浮液更均匀的各种技术方法。进一步强化可以通过增加颗粒浓度，通过新的段塞生成技术来实现，在子项目中处理，并在这一领域进行密切合作。此外，应研究通过协调催化颗粒的润湿性行为来强化非均相催化液-液反应，并借助具有技术挑战性的化学反应系统确定所采取措施的有效性。