SPP 1423: Process-Spray: Functionalised Solid Particles from Spray Processes - From Powder Property Demands to Tailored Spray Processes and Feed Control

为了生产固体颗粒和粉末，加工业越来越多地采用雾化和喷雾技术。对工艺综合喷涂技术的基本原理和机制的了解相对较少，因此启动了这一联合优先方案。参与的研究小组来自工艺和颗粒技术、流体力学和物理化学、制药或金属粉末工艺等工程学科。基础知识的目标是用于喷雾工艺的技术应用。联合优先方案的研究方法采用雾化和喷雾技术中的创新方法和程序，以描述在密集、浓缩的多相系统中产生喷雾中固体颗粒的传输和转移过程。多相系统和过程的过程集成测量技术的实际发展和成就与先进的、最新开发的建模和模拟技术相结合，使人们能够接近、分析和描述雾化和喷雾的基本过程。这些成就与工业对具有非常特殊性质(如组成、大小和形状、流动性等)的颗粒和粉末的需求相结合，需要多学科合作来分析和模拟喷雾过程中的颗粒生成。通常用于颗粒生产的雾化液体是复杂的多相流变性系统，例如悬浮液或乳状液。这些边界条件反映了建立和开发用于颗粒生产的特定喷雾工艺的具有挑战性的研究方案，但也反映了开发创新和新粉末的巨大可能性和潜力。在这种方法中，从流程到系统配置，都需要专门的技术知识来开发量身定做的分散系统。在优先方案的框架内，预计最终将得出递归设计方法，其中根据用户声称的颗粒属性定义了崩解和雾化过程以及喷雾过程的要求概况。以实现适用于喷雾颗粒的雾化设施和设备的形式对所得出的结果进行技术应用是研究方案的重点。

For the production of solid particles and powders the process industry increasingly employs atomisation and spray techniques. Knowledge of the fundamental principles and mechanisms of process integrated spray technologies is relatively coarse, therefore this joint Priority Programme has been initiated. The participating research groups are from engineering disciplines as process and particle technology, fluid mechanics and physical chemistry, pharmaceutical or metall-powder technics. The aimed gain of fundamental knowledge is intended to be used in technical applications of spray processes. The research approach of the joint Priority Programme uses innovative methods and processes in atomisation and spray technology for the derivation of the description of transport- and transfer-processes in dense, concentrated multiphase systems for the generation of solid particles in sprays. Actual developments and achievements in process integrated measurements technologies for multiphase systems and processes in combination with advanced, recently developed modelling and simulation techniques allow the approach, analysis and description of the fundamental processes in atomisation and sprays. These achievements in combination with the industrial demand for particles and powders having very specific properties (as composition, size and shape, flowability and others) necessitate a multi disciplinary cooperation for analysis and modelling of particle generation in spray processes. The atomisation liquids typically involved for particle production are complex multiphase rheological systems as e.g. a suspension or emulsion. These boundary conditions reflect the challenging research programme for establishing and development of specific spray processes for particle production, but also reflect the huge possibilities and potentials for the development of innovative and new powders. From the process to system configuration in this approach technical expertise for the development of tailor-made dispersed systems is expected. In the frame of the Priority Programme finally a recursive design approach is expected to be derived, where from the user claimed particle properties the requirement profile for the disintegration and atomisation process as well as for the spray process is defined. The technical application of the derived findings in the form of realisation of adapted atomisation facilities and plants for spray made particles is the focus point of the research programme.