Mean fluid temperature data for endothermic steam reforming processes in continuous flow reactor systems at different pressures

The mean fluid temperature data at different pressures are obtained for the coupling of endothermic and exothermic reactions in chemical reactors. To overcome the challenges and limitations posed by batch reactors in general, continuous flow reactor systems are designed and manufactured. These continuous flow reactors possess great potential to replace batch systems for most of the applications across various industries. Flow reactors are devices in which chemical reactions take place in microchannels. Microreactors are continuous flow reactors, whereby the chemical reaction happens continuously. Microreactors offer many advantages over conventional batch reactors, including vastly improved heat transfer, increased control of reaction kinetics, higher yields, improved operational safety and higher energy efficiency. Continuous flow reactors are characterized by unique internal structure, which is able to improve the mixing of fluids, enhance mass transfer and increase total heat transfer efficiency, hence appropriate for multi-phase reactions as well as those with high risks or under harsh conditions such as high temperature and low temperature. Exothermic and endothermic reactions take place simultaneously in continuous flow reactor systems whereby the heat required for the latter is supplied by the former. Heat transfer occurs via conduction through the walls of the reactor. For the endothermic reaction, the structure is especially effective because both the internal surfaces of the walls are coated with structured catalysts. The channels are 0.7 millimeters in height and in width and 30.0 millimeters in length. To ensure the mechanical strength at elevated pressures, the thickness of the uncoated walls and the catalyst layers is 0.7 millimeters and 0.1 millimeters, respectively. The oxidation catalyst consists essentially of oxides of copper, zinc and aluminum. The reforming catalyst consists essentially of copper and oxides of zinc and aluminum. The exothermic and endothermic processes are conducted with a methanol-air equivalence ratio of 0.8 and a steam-to-methanol molar ratio of 1.17. The inlet temperature of the mixtures is 373 degrees Kelvin. The gas velocity is 2.0 meters per second at the reforming channel inlets and 0.6 meters per second at the oxidation channel inlets, thereby assuring sufficient heat in the reactor. The boundary conditions relate macroscopic fluid flow at a catalytically active surface to the rates of surface reactions. Heterogeneous reactions at a catalytically active surface affect the heat and mass balance at the surface. Contributor: Junjie Chen, E-mail address: [e-mail], ORCID: 0000-0002-5022-6863, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China本数据集针对化学反应器内吸热与放热反应的耦合过程，获取了不同压力条件下的流体平均温度数据。为克服传统间歇式反应器（batch reactor）普遍存在的挑战与局限，研究团队设计并制备了连续流反应器（continuous flow reactor）系统。这类连续流反应器在多数工业应用场景中，具备取代间歇式反应系统的巨大潜力。 流反应器是指化学反应在微通道内进行的反应装置；微反应器（microreactor）则属于连续流反应器，其化学反应可连续开展。相较于传统间歇式反应器，微反应器具备诸多优势：传热性能大幅提升、反应动力学调控能力增强、产物收率更高、运行安全性更优且能源利用效率更高。 连续流反应器具备独特的内部结构，可强化流体混合、提升传质效率并提升总传热性能，因此适用于多相反应，以及高危或高温、低温等严苛工况下的反应过程。在本连续流反应器系统中，放热反应与吸热反应同步进行，吸热反应所需的热量由放热反应提供。热量通过反应器壁面以传导方式传递。针对吸热反应场景，该结构的优势尤为显著，因为反应器壁面的内表面均负载了结构化催化剂。 反应通道的高、宽均为0.7毫米，长度为30.0毫米。为保证高压工况下的机械强度，未负载催化剂的壁面厚度与催化剂涂层厚度分别为0.7毫米与0.1毫米。氧化催化剂主要由铜、锌与铝的氧化物组成。重整催化剂主要由铜以及锌、铝的氧化物组成。本实验中放热与吸热过程的运行参数设置为：甲醇-空气当量比0.8，水蒸气-甲醇摩尔比1.17。反应混合气的入口温度为373开尔文。重整通道入口处的气体流速为2.0米每秒，氧化通道入口处为0.6米每秒，以此保证反应器内具备充足的热量。 边界条件将催化活性表面处的宏观流体流动与表面反应速率相关联；催化活性表面处的非均相反应（heterogeneous reaction）会影响该表面的热质平衡。 数据集贡献者：陈俊杰，电子邮箱：[e-mail]，开放研究者与贡献者标识符（ORCID）：0000-0002-5022-6863，河南理工大学机械与动力工程学院能源与动力工程系，中国河南省焦作市世纪大道2000号，邮编454000。