Oven for continuous elimination of phytosanitary pests present in organic particles of plant origin

An oven (1) for the elimination of harmful organisms that present phytosanitary risks present in materials of plant origin in the form of particles, said oven comprising, comprising:

• (a) an enclosure (8) comprising an essentially cylindrical wall extending along a vertical axis, Z;
• (b) a first circular plate (1a) mounted on the wall of said enclosure (8) normal to the vertical axis, Z, and arranged to rotate at a first speed of rotation, v1, in a first direction about the vertical axis, Z, a surface of said first circular plate being perforated, and permeable to air, to water vapor and to water;
• (c) a second circular plate (1b) mounted at a certain distance from the first plate on the wall of said enclosure (8) normal to the vertical axis, Z, and arranged to rotate at a second speed of rotation, v2, about said vertical axis, Z, a surface of said second circular plate being perforated and permeable to air, to water vapor and to water;
• (d) a first distribution means (2a) for distributing said particles capable of distributing said particles before baking along a radius of the first plate (1a)];
• (e) a first recovery means (3a) for recovering the particles (20a) distributed on the first plate (1a) after a rotation by a given angle thereof, said first recovery means being situated downstream of, and preferably adjacent to, the first distribution means (2a);
• (f) a transfer means (4a) for transferring the particles collected from the first plate (1a) by the first recovery means (3a) to a second distribution means (2b) capable of distributing said particles (20t) along a radius of the second plate (1b);
• and
• (g) a gas blowing means forming a closed gas cycle comprising:
• a blower (5) for imparting a velocity on a flow of gas (51) and directing it toward,
• a heating station (7) to form a hot gas flow (52) having an initial temperature, T0, and an initial relative humidity, RH0, and then directing the hot gas flow (52) toward,
• an upstream baffle, deflecting the hot gas flow as a flow substantially parallel to the axis Z, having a first temperature, T1, and a first relative humidity, RH1, passing first of all through the perforated surface of the first plate (1a), where it loses calorific energy and from where a cooled gas flow (53) emerges having a second temperature, T2, and a second relative humidity, RH2, to then pass directly afterward through the perforated surface of the second plate (1b), where it loses more calorific energy and from where a cold gas flow (54) emerges having a third temperature, T3, and a third relative humidity, RH3, to then reach,
• a downstream baffle deflecting the cold gas flow (54) toward the blower and recommencing the gas cycle.