Kurzwegdestillation / Short Path Distillation

Vacuum Control
Leak Rate Calculation
Process Monitoring
Quality Assurance

Short Path Distillation Systems

Thermally sensitive product mixtures can be separated by means of the so-called short path distillation. As the working pressure is decreased into the fine vacuum range this distillation is carried out at very low temperature.

Requirements

By means of a wiper system the raw material to be processed is dispersed on a tube wall which is heated from the outside. Low-boiling components evaporate and are recollected at an internal condenser. The process pressure, which typically lies in the range 1e-3 mbar to 1 mbar, must be kept constant and recorded for quality assurance.

Suitable Products

VD64P: The compact VD64P vacuum display and control system is used for vacuum measurement. The potential-free switching points can be used to control a vacuum valve and, if required, a venting valve.

VSP63: By combining the VD64P and the external transducer VSP63, the desired vacuum control can be realized cost-effectively. The pressure curve is documented during the process via the serial interface.

VD85: The VD85 vacuum meter can be used to measure and monitor the vacuum in distillation systems and to determine the leak rate. The wide measuring range is particularly important here. The devices are easy to operate and extremely flexible to use.

VD850: The Piezo/Pirani compact vacuum meter with extended functions and features. A large display shows current measured values and pressure diagrams and enables convenient menu navigation with the 4+1 membrane keypad. The digital VD850 measures absolute and relative pressure over seven decades in the rough and fine vacuum range. An integrated data logger stores several measurement series with RTC data. For quality assurance and process documentation all data can be sent quickly and easily to a PC or tablet via the device's USB-C interface or optional Bluetooth® LE.

Source: VTA Verfahrenstechnische Anlagen GmbH