Cleaning in Place Konzept zum Dauerbetrieb optischer Sonden in der Prozessanalytik der Polymerextrusion

Abstract

Cleaning in place concept for continuous operation of optical probes in process analytics of polymer extrusion The continuous monitoring of quality parameters is an increasing requirement in polymer extrusion. Optical spectroscopy can fulfill this requirement as it detects other parameters besides color, such as chemical properties, turbidity or particle size. Here, optical probes are used for inline measurements in the extruder. During operation, material can accumulate on the probe windows (window fouling). This article presents a new cleaning in place concept that allows windows to be cleaned without interruption during production. Additionally, the calibration of the measurement system is possible. This prevents setup times and ensures a continuous inline measurement.