Batch‐Rektifikation mit Mittelbehälter

Batch Distillation in Middle Vessel Columns Batch distillation in a middle vessel column is a promising alternative to conventional batch distillation as disadvantages such as high temperatures in the feed vessel or a high energy and time demand of the process can be avoided. The article describes the basics of the synthesis of processes for the separation of zeotropic and azeotropic mixtures using this type of column. Furthermore, experimental results are presented and the advantages of batch distillation in a middle vessel column are explained.     

Wärmeübergang in kurzen,wandgängig gerührten Apparaten

Scraped surface heat exchanger are often used in industrial settings for the treatment of systems with solid particle formation or higher viscosities. In reactors with a small length‐diameter ratio, the backmixing has thereby a significant influence on the heat transfer. In the experiments presented here, it can be shown that the heat transfer coefficient strongly depends on the flow pattern within the laminar flow regime, and that, depending on the running conditions, an increased rotor speed may have a negative effect on the heat transfer rate.     

Verhalten gedehnter Flüssigkeitsfäden in viskosen Flüssig/Flüssig‐ Systemen

The stability of jets in elongational flow is exploited to receive thin threads before break up. Fine drops can be generated in suitable geometries with comparable large cross flow areas. The examination deals with the stability of liquid threads simultaneously extended with the continuous phase in convergent flow. Break up limits and regimes are discussed.