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首页> 外文期刊>AIChE Journal >A Novel Dynamic Membrane Reactor Conceptwith Radial-Flow Pattern for Reacting Materialand Axial-Flow Pattern for Sweeping Gas inCatalytic Naphtha Reformers
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A Novel Dynamic Membrane Reactor Conceptwith Radial-Flow Pattern for Reacting Materialand Axial-Flow Pattern for Sweeping Gas inCatalytic Naphtha Reformers

机译：一种新型的动态膜反应器概念，具有用于反应物料的径向流模式和用于催化石脑油重整器的吹扫气体的轴向流模式

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摘要

Naphtha reforming units are of high interest for hydrogen production in refineries. In this regard, the application of membrane concept in radial-flow tubular naphtha reactors for hydrogen production is proposed. Because of the importance of the pressure drop problem in catalytic naphtha reforming units, the radial-flow reactors are proposed. A radial-flow tubular membrane reactor (RF-TMR) with the radial-flow pattern of the naphtha feed and the axial-flow pattern of the sweeping gas is proposed as an alternative configuration for conventional axial-flow tubular reactors (AF-TR). The cross-sectional area of the tubular reactor is divided into some subsections in which walls of the gaps between subsections are coated with the Pd-Ag membrane layer. A dynamic mathematical model considering radial and axial coordinates ((r, z)-coordi-nates) has been developed to investigate the performance of the new configuration. Results show ~300 and 11 kg/h increase in aromatic and hydrogen production rates in RF-TMR compared with AF-TR, respectively. Furthermore, smaller catalyst particles with higher efficiency can be used in RF-TMR due to a slight pressure drop. The enhancement in aromatics (octane number) and hydrogen productions owing to applying simultaneously the membrane concept and radial-flow pattern in naphtha reactors motivates the application of RF-TMR in refineries.
机译：石脑油重整装置对于精炼厂的氢气生产非常重要。在这方面，提出了膜概念在径向流管式石脑油反应器中用于制氢的应用。由于在催化石脑油重整单元中压降问题的重要性，提出了径向流反应器。建议将具有石脑油进料的径向流型和吹扫气的轴向流型的径向流管式膜反应器（RF-TMR）作为常规轴流管式反应器（AF-TR）的替代配置。管状反应器的横截面面积被分成一些子区域，其中子区域之间的间隙壁被Pd-Ag膜层覆盖。考虑径向和轴向坐标（（r，z）-coorddinates）的动态数学模型已经开发出来，以研究新配置的性能。结果表明，与AF-TR相比，RF-TMR的芳烃和氢气生产率分别提高了约300和11 kg / h。此外，由于轻微的压降，具有较高效率的较小催化剂颗粒可用于RF-TMR。由于同时在石脑油反应器中应用了膜概念和径向流模式，芳烃（辛烷值）和氢气产量的提高推动了RF-TMR在炼油厂的应用。

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