Microwave reactor for continuous treatment by microwaves of a flowing fluid medium

A microwave reactor for a continuous treatment by microwaves of a flowing fluid medium, said microwave reactor comprising:

• a flow tube, made of a microwave-transparent material, extending longitudinally along a flow axis for a flow of the fluid medium along said flow axis;
• an input waveguide extending along a propagation axis for a microwaves propagation along said propagation axis, said input waveguide having a rectangular cross-section with two large sides defining a large dimension and two small sides defining a small dimension shorter than the large dimension, and said input waveguide being coupled to the flow tube for continuous treatment by microwaves of the fluid medium, with the flow axis orthogonal to the propagation axis;
• and
• an enclosure inside which the flow tube extends at least partially, said enclosure being made of a microwave-reflective material and extending longitudinally along the flow axis;
• said microwave reactor wherein:
• the large sides of the input waveguide are parallel to the flow axis, whereas the small sides of the input waveguide are orthogonal to the flow axis;
• the enclosure has a lateral dimension measured parallel to the small sides of the input waveguide, said lateral dimension being longer than the small dimension of the input waveguide, said input waveguide being transversely fixed on the enclosure, said enclosure having an input window surrounded by the input waveguide for a microwaves propagation through the input window inside the enclosure, and
• the enclosure extends longitudinally along the flow axis over a determined enclosure length between a first end and a second end opposite to one another, said input length being strictly longer than the small dimension of the input waveguide.