Solid-fuel gasification system

C - Chemistry – Metallurgy – 10 – J

Patent

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Details

C10J 3/00 (2006.01) C10J 3/02 (2006.01)

Patent

CA 2569009

A solid-fuel gasification system which not only enables the omission of a char recycle means but can produce a synthesis gas comprising hydrogen and carbon monoxide as main components and having a high calorific value. The solid-fuel gasification system comprises: a pyrolysis region to which no air is supplied; a char combustion region in which the char from the pyrolysis region is burnt to yield a high-temperature combustion gas; a dust remover which purifies the combustion gas; a combustion means for combustion gas reheating which elevates the temperature of the combustion gas from which dust has been removed; and a steam heater in which steam is heated to a high temperature by heat exchange between the combustion gas and the steam. The gasification system pyrolyzes a solid fuel with high-temperature steam to produce a synthesis gas comprising hydrogen and carbon monoxide as main components.

Un système de gazéification de carburant solide qui non seulement ne nécessite pas de moyen de recyclage des charbons mais peut produire un gaz de synthèse comprenant de l'hydrogène et du monoxyde de carbone comme composants principaux et ayant une haute valeur calorifique. Le système de gazéification de carburant solide comprend: une zone de pyrolyse sans air fourni; une zone de combustion du charbon dans laquelle le charbon provenant de la zone de pyrolyse est brûlé pour produire un gaz de combustion à haute température; un dépoussiéreur qui purifie les gaz de combustion; un moyen de combustion pour réchauffer les gaz de combustion qui élève la température des gaz de combustion desquels la poussière a été enlevée; et un réchauffeur de vapeur dans lequel la vapeur est chauffée à haute température par échange de chaleur entre les gaz de combustion et la vapeur. Le système de gazéification pyrolyse un carburant solide avec de la vapeur à haute température pour produire un gaz de synthèse comprenant de l'hydrogène et du monoxyde de carbone comme composants principaux.

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