Inline measurements of temperature profiles in spatially confined applications place special demands on the measurement technology. This especially applies for determination of the temperature changes in tube and tube-bundle reactors. A measuring system for fiber-optic temperature measurement has been developed for this purpose, allowing a greater number of temperature points while simultaneously reducing the protective tube in the reactor. This system has been successfully implemented in an application at Evonik in Marl, Germany.
Reliable determination of the temperature profile within the catalyst filling has far-reaching significance for the catalytic conversion of gases and liquids in tube and tube-bundle reactors. They influence: