Experimental and Numerical Investigation of Spray Flame Synthesis in Pilot Scale Facilities

中试装置中喷雾火焰合成的实验和数值研究

• 批准号: 375875269
• 负责人: Professor Dr.-Ing. Nikolaus Andreas Adams
• 金额: --
• 依托单位: Lehrstuhl für Aerodynamik und Strömungsmechanik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/375875269?language=en
• 关键词: Experimental; Numerical; Investigation; Spray; Flame

The spray flame synthesis of nanoparticles is of high interest for industrial applications, since appropriate processes control allows fot the use of cost-effective starting materials and an economical synthesis route can be developed. Actually, the adjustment of size-dependent properties is prevented by the wide size distribution of the materials produced on the industrial scale. An important step towards bridging the gap between research and industrialization are plants on a pilot scale. Here, it is possible to modify process parameters and thus modify particle properties with the support of simulation, measurement and laboratory experiment. However, scaling to this pre-industrial scale has so far failed due to a lack of insight into the basic physico-chemical processes, since a direct "proportional" scaling of the processes from the laboratory scale is generally not possible since process-determining similarity parameters can not be kept as a rule. In addition to the experimental and process engineering problems, the development of suitable simulation methods for the predictive determination of the particle properties such as size, size distribution and agglomeration degree is essential for the successful scaling of the existing processes from the laboratory to the industrial scale.The SPP1980 SpraySyn defines a standard process for spray flame synthesis in the laboratory scale. In parallel to the intended physical investigation on the standard burner "SpraySyn" (laboratory scale), physical and process engineering problems about up-scaling are examined. The successive up-scaling is important for scientific and economic reasons and, therefore, represents the main goal of this collaborative research project. The project partners ISTA and AER will contribute their experience from the first funding period, while the participation in active research of IUTA (previously involved as an associated partner) is the logical link to the implementation of particle synthesis on a pilot plant scale. The core competences of IUTA are nanoparticle synthesis and the operation of and measurements in large particle reactors. ISTA contributes profound knowledge of non-intrusive measurement techniques for the characterization of gas flows, spray formation and burner development. The expertise of the AER in the field of numerical description of reactive flows combines experimental findings with theoretical principles and thus contributes significantly to the understanding of particle formation in the scaled spray flame process. Different approaches for scale-up nanoparticle synthesis will be evaluated experimentally and numerically during the project and finally evaluated by producing highly specific nanoparticles in reactor operation.

纳米颗粒的喷雾火焰合成在工业上具有很高的应用价值，因为适当的工艺控制可以使用成本效益高的起始材料，并且可以开发出一条经济的合成路线。实际上，工业规模生产的材料的广泛尺寸分布阻止了对尺寸相关性质的调整。缩小研究和工业化之间差距的重要一步是在试点规模上建立工厂。在这里，在模拟、测量和实验室实验的支持下，可以修改工艺参数，从而修改颗粒特性。然而，由于缺乏对基本物理化学过程的洞察，到目前为止，由于缺乏对基本物理化学过程的了解，到这种工业化前规模的规模是失败的，因为通常不可能从实验室规模直接按比例缩放过程，因为确定过程的相似性参数不能作为规则保持。除了实验和过程工程问题外，开发合适的模拟方法来预测颗粒的性质，如尺寸、粒度分布和团聚程度，对于成功地将现有工艺从实验室扩展到工业规模至关重要。SPP1980 SpraySyn定义了实验室规模的喷雾火焰合成的标准过程。在对标准燃烧器“SpraySyn”(实验室规模)进行预期的物理研究的同时，还研究了有关放大的物理和工艺工程问题。由于科学和经济原因，连续的扩大规模是重要的，因此，代表了这一合作研究项目的主要目标。项目合作伙伴ISTA和AER将从第一个资助期开始贡献他们的经验，而Iuta(以前作为联系伙伴参与)积极研究的参与是在中试工厂规模上实施颗粒合成的逻辑联系。Iuta的核心能力是纳米颗粒的合成以及在大颗粒反应堆中的操作和测量。ISTA在气体流动、喷雾形成和燃烧器开发的非侵入性测量技术方面贡献了深厚的知识。AER在反应流数值描述领域的专业知识将实验结果与理论原理相结合，因此对理解比例喷雾火焰过程中的颗粒形成有重要贡献。不同的放大纳米粒子合成方法将在项目期间进行实验和数值评估，并最终通过在反应堆操作中生产高度特定的纳米粒子进行评估。