Simulation and analysis of a novel wideband microwave coaxial reactor

Abstract

For the study of microwave chemistry, it is necessary to develop a reactor with small-size and wide operating frequency band. This paper presents a novel microwave coaxial reactor. Its main part is a coaxial cavity, and the input end is a coaxial port filled with PTFE, and the other end is a short circuit terminal. Two orifices which are designed as cut-off waveguides for microwave are attached to the cavity as passageway of sample solutions, so the reactor can treat the samples continuously. The distributions of electromagnetic field and temperature of this novel microwave coaxial reactor used for heating edible vegetable oil at 915 MHz and 2450 MHz are simulated with finite-element method multi-fields coupling analysis. It is easy to find out that this novel microwave coaxial reactor could work properly over a wide frequency band. Also, the operating frequency could be chosen over a wide frequency band to get the optimal reaction effect to meet the requirements of experiments.