Imaging nylon polymerisation processes by applying electrical tomography

The paper presents an application of electrical tomography for imaging a nylon polymerisation process at elevated temperatures (up to 275°C) and pressures (up to 22 bar). The process was realised within a metal walled tank using a sensor constructed in the form of a ceramic sleeve with electrodes coated on the inner surface. The images obtained show the dynamic behaviour of the process and how the electrical properties of the material varied with time.