Modeling of electrodynamic components of a microwave pyrolysis complex

This work is devoted to developing a microwave complex for thermal processing of peat (pyrolysis). To implement the study, the necessary physical properties of high-moor and low-moor peat were studied. Key parameters characterizing the dielectric characteristics of the research objects were measured. The loss tangent and permittivity for the high-moor peat were 3.4×10-2 and 1.58, and for the low-moor peat 6.5×10-2 and 2.76, respectively. Structural elements for creating a microwave complex that allows processing a large volume of organic material during pyrolysis are proposed. Efficient waveguide rotations, an optimized transition from a rectangular waveguide section to a round one, a non-reflective vacuum barrier window, and an elliptical microwave radiation polarization converter are considered in this study. The 3D numerical modeling and optimization of the proposed waveguide elements of the system are performed to ensure efficient transmission of microwave energy to the reactor with minimal reflection losses, which contributes to reliable and long-term operation of the complex.