Investigations on the Separation Efficiency of Tubular Bowl Centrifuges
Investigations on the Separation Efficiency of Tubular Bowl Centrifuges
复制标题
管式转鼓离心机分离效率的研究
DOI：
10.1002/ceat.200800300
复制
发表时间：
2008
影响因子：
2.1
通讯作者：
H. Nirschl
中科院分区：
文献类型：
--
作者：
Sebastian Ståhl;L. Spelter;H. Nirschl
在过去的十年里，在纳米粒子的合成和功能化方面取得了重大进展，但对分离或分类等材料系统的处理一直被忽视。使用管式离心机，由于g值非常高，即使是纳米级的颗粒也可以以合理的吞吐量从悬浮液中分离出来。与膜技术(低通量)以及过滤、圆盘堆叠和卧式离心机(g值较低)相比，这是一个巨大的优势。对排出的固体进行随时间变化的分析，以及使用磁共振光谱仪(MRI)验证沉淀物的堆积，可以全面了解管式碗离心机中的沉淀过程。核磁共振成像可以无创地、直接地观察充填的离心机转子；该数据与理论结果进行了比较。
In the last decade a major progress has been achieved in the synthesis and functionalization of nanoscale particles, but the handling of such material systems like separation or classification has been neglected. With tubular centrifuges, even nanoscale particles can be separated from a suspension at reasonable throughputs due to very high g values. This is a great advantage compared to membrane techniques (low throughput) and filtering, disc stack and decanter centrifuges (lower g values). An analysis of the discharged solids in dependence on time and verification of sediment build-up with a magnetic resonance spectrometer (MRI) provide a comprehensive understanding of the sedimentation process in a tubular bowl centrifuge. MRI allows a noninvasive, direct view into the filled centrifuge rotor; this data is compared with theoretical results.