Determination of Temperature Profile within Continuous Micromixer-Tube ReactorUsed for the Exothermic Addition of Dimethyl Amine to Acrylonitrile and anExothermic Ionic Liquid Synthesis

摘要

Continuous micromixer-tube reactors are versatile and widely used tools to explorernthe benefits of microreactor processing for organic synthesis. Due to enhanced mass andrnheat transfer capabilities and mechanical stability with regard to temperature and pressurerntheir use can lead for given chemical protocols to process intensification and as importantrnadditional aspect enable process chemistry with novel features not feasible so far becausernof limits of conventional equipment. Naturally, the heat transfer capabilities of the tubernsection within continuous micromixer-tube reactors are - albeit enhanced - limited especiallyrnsince they are often rather meso- than microstructed. In this context the temperaturernprofiles within the tube section of a continuous micromixer-tube reactor was determined forrntwo exothermic reactions, the addition of dimethly amine to acrylonitrile and an ionic liquidrnsynthesis, in order to determine the occurrence and extent of hot spot formation for differentrnprocess conditions and to gain thereby also a deeper understanding of the processes.rnSeven temperature sensing elements were therefore integrated into the tube section.rnFurthermore, it is outlined how these experiments can contribute to the targeted adaptationrnof the reactors.