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Filtration and separation properties of multi-phase solid-liquid-liquid Suspensions (multi-component suspensions)

多相固液液悬浮液（多组分悬浮液）的过滤分离性能

基本信息

批准号：
266337472
负责人：
Professor Dr.-Ing. Urs Peuker
金额：
--
依托单位：
Institut für Mechanische Verfahrenstechnik und Aufbereitungstechnik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2019-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/266337472?language=en
关键词：
Filtration separation properties multi phase

项目摘要

The investigations focus on the processing and filtration properties of multi-component suspensions, which consist of a mother liquid containing a disperse solid phase (particles) and a disperse liquid phase (droplets). Multi-component suspensions are also called suspo-emulsions. The technical occurrence of these multi component suspensions are processes in the oil and gas, base materials as well as in pharmaceutical and chemical industry. Both large processing streams as well as suspo-emulsions with complex interfacial chemistry lack an efficient strategy, which allows the separation of the three phases. The overall aim is the development of a strategy for cake filtration, which allows the separation of the two-component pore liquid within the multi-component suspension and the solid particles from each other. One focus is on the properties of the pore system, which is built up by filtration. The question to be answered is how the pore structure and the property function depend on the interactions between the particles and the droplets. The mobility of the two incorporated liquid phases within the pore structure is essential for the mechanical separation. Process related experiments and a high-resolution analysis by computer tomography using an in-situ-filtration-cell will provide an idea of the structuring and incorporation of the two liquid phases into the porous system. The activities also include the methodical development of the in-situ filtration experiments for the three phase system. One main task here is the resolution between continuous aqueous and disperse oil phase in the presence of the particles. This involves the question under which material or process parameters coalescence occurs, which leads to a macroscopic distribution of the second liquid within the pores or whether the emulsion structure remains unchanged within the pore liquid. Furthermore, the interaction of liquid and solid particles has to be taken into consideration. This may lead to agglomeration and the formation of liquid bridges between the particles of the cake structure affecting the cake properties like compressibility and durability. Due to the fact that particles and droplets may interact with capillary forces the multi-component filter cakes show an interesting consistency and flow behavior. These will be characterized in collaboration with the University of Melbourne (Fluid Particle Research Centre).The fundamental understanding will allow setting up a model using the pore network approach. This model will be used in future for the dimensioning and process optimization of the separation.

研究了由分散的固相（颗粒）和分散的液相（液滴）组成的多组分悬浮液的处理和过滤性能。多组分悬浮液也称为悬浮液乳剂。这些多组分悬浮液的技术发生在石油和天然气、基础材料以及制药和化学工业的过程中。无论是大型加工流程还是具有复杂界面化学的悬浮乳液，都缺乏一种有效的策略来分离这三个阶段。总体目标是开发一种滤饼过滤策略，该策略允许在多组分悬浮液中分离双组分孔隙液体和相互分离的固体颗粒。一个重点是孔系统的性质，它是由过滤建立的。要回答的问题是孔隙结构和性质函数如何取决于颗粒和液滴之间的相互作用。两相结合的液相在孔隙结构内的流动性对机械分离至关重要。过程相关的实验和使用现场过滤池的计算机断层扫描的高分辨率分析将提供两种液相在多孔系统中的结构和结合的想法。活动还包括有系统地开发三相系统的原位过滤实验。这里的一个主要任务是在颗粒存在的情况下区分连续的水相和分散的油相。这涉及到材料或工艺参数在何种情况下发生聚并，从而导致第二液体在孔隙内的宏观分布，或者在孔隙液体内乳液结构是否保持不变的问题。此外，还必须考虑到液体和固体颗粒的相互作用。这可能导致饼结构颗粒之间的结块和液体桥的形成，影响饼的压缩性和耐久性等性能。由于颗粒和液滴可能与毛细管力相互作用，多组分滤饼表现出有趣的稠度和流动特性。这些将与墨尔本大学（流体粒子研究中心）合作进行表征。基本的理解将允许使用孔隙网络方法建立模型。该模型可用于分选过程的尺寸确定和工艺优化。