Method and system for roasting a biomass feedstock

Details Method and system for roasting a biomass feedstock Method and system for roasting a biomass feedstock

Category

F - Mech Eng,Light,Heat,Weapons

Subcategory

23

Subsubcategory

G

IPC codes

F23G 7/10 (2006.01)

Type

Patent

Patent number

CA 2656283

Description

The invention relates to a method for roasting a plant biomass feedstock (B), comprising the following steps: generation of a treat gas stream using thermal generation means (G); generation of a layer of material at a high temperature, known as the thermal base; treatment of the biomass feedstock (B) with the treat gas stream, said treat gas stream being loaded with gas elements including water vapour and combustible pyrolysis gases originating from the biomass feedstock (B) during treatment; and recycling of at least one part of the water vapour by passing at least part of the laden gas stream through the above-mentioned thermal base. The invention also relates to a system for roasting a plant biomass feedstock (B).

Procédé de torréfaction d'une charge de biomasse végétale (B), comprenant les étapes suivantes: - génération d'un flux gazeux de traitement par des moyens de génération thermique (G); - génération d'une couche de matière à haute température, dite base thermique; - traitement de ladite charge de biomasse (B) par ledit flux gazeux de traitement, ledit flux gazeux de traitement se chargeant d'éléments gazeux comprenant de la vapeur d'eau et de gaz de pyrolyse combustibles provenant de ladite charge de biomasse (B) lors dudit traitement; et - recyclage d'au moins une partie de ladite vapeur d'eau par passage d'au moins une partie dudit flux gazeux chargé au travers de ladite base thermique; L'invention concerne aussi un système de torréfaction d'une charge de biomasse végétale (B).

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