PROCEDE DE TORREFACTION D'UNE CHARGE CARBONEE COMPRENANT UNE ETAPE DE SECHAGE OPTIMISEE

The present invention concerns a method for roasting a carbonaceous feedstock comprising at least one step of drying the carbonaceous feedstock and one step of roasting the dried carbonaceous feedstock, producing roasting gases and roasted biomass, in which at least a portion of the roasting gases o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LEMAIRE RAPHAEL, GAZARIAN JEREMY, BOURNAY LAURENT, ULLRICH NORBERT
Format:	Patent
Sprache:	fre
Schlagworte:	CHEMISTRY DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS FUELS LUBRICANTS METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Beschreibung
Zusammenfassung:	The present invention concerns a method for roasting a carbonaceous feedstock comprising at least one step of drying the carbonaceous feedstock and one step of roasting the dried carbonaceous feedstock, producing roasting gases and roasted biomass, in which at least a portion of the roasting gases originating in the roasting step is sent to a combustion step producing a combustion gas at a temperature greater than or equal to 700°C, at least a portion of which is recycled in the drying step, mixed with at least a gaseous effluent, the temperature of the gaseous mixture recycled in the drying step being between 200 and 900°C.