INSTALLATION DE TRAITEMENT D'UNE MATIERE COMBUSTIBLE ET SON MODE DE FONCTIONNEMENT

L'INVENTION A POUR OBJET UNE INSTALLATION DE TRAITEMENT D'UNE MATIERE COMBUSTIBLE PAR CIRCULATION DE GAZ CHAUDS, COMPRENANT UNE CHAMBRE DE REACTION ALLONGEE 1 AYANT UN FOND PLAN 13 ET MUNIE A UNE EXTREMITE AMONT 2 DE MOYENS DE CHARGEMENT DE LA MATIERE SOUS FORME D'UNE COUCHE 4 SE DEPLACANT LE LONG DU FOND PLAN 13 JUSQU'A UNE EXTREMITE AVAL 12 DE DEVERSEMENT DE LA MATIERE TRAITEE, LA CHAMBRE DE REACTION 1 ETANT ASSOCIEE A AU MOINS UN CIRCUIT 18, 6 DE CIRCULATION DE GAZ CHAUDS A TRAVERS LA COUCHE 4 DE MATIERE.SELON L'INVENTION, LA CHAMBRE DE REACTION 1 EST MUNIE D'UN ORGANE 8 DE CONTROLE DU DEVERSEMENT DE LA MATIERE TRAITEE, PLACE EN SAILLIE AU-DESSUS DU NIVEAU DU FOND 13 A L'EXTREMITE AVAL 16 DE CE DERNIER ET MUNI DE MOYENS D'EVACUATION CONTINUE DE LA MATIERE TRAITEE, AVEC UN DEBIT REGLABLE.L'INVENTION S'APPLIQUE SPECIALEMENT A LA GAZEIFICATION DE MATIERE VEGETALE. 1. Plant for treating a combustible material by circulating hot gases, comprising an elongated reaction chamber (1) having a flat bottom (13) and provided at an upstream end (2) with means for loading the material in the form of a layer (4) which moves along the flat bottom (13) as far as a downstream end (12) for discharging the treated material, the reaction chamber (1) being associated with at least one circuit for circulating hot gases through the layer (4) of material, which circuit has means (18) for introducing the hot gases above the layer (4) of material and means (6) for sucking the gases through at least one permeable section (15) arranged in the bottom (13), at least on the downstream side, which plant comprises an element (8) for controlling the flow of the treated material at an adjustable rate, which element is located so as to project in relation to the plane of the bottom (13) at the downstream end (16) of the latter, a means for measuring the temperature of the gases sucked in below the layer (4) of material at the downstream end (12) of the bottom (13) and a means for adjusting, via the control element (8), the rate at which the treated material is discharged, in accordance with the variations in the measured temperature t of the gases with respect to a predetermined level t' corresponding to the optimum operating conditions.