Mixing and feeding aqueous solution of alkali metal salt and...

Details Mixing and feeding aqueous solution of alkali metal salt and... Mixing and feeding aqueous solution of alkali metal salt and...

C - Chemistry, Metallurgy

10

J

C10J 3/57 (2006.01)

Patent

CA 2673121

A process of producing a combustible gas from a solid sulfur- containing carbonaceous fuel is provided. In the process, an aqueous solution is provided. A solute of the solution is a carbonate salt of an alkali metal. Particles of the fuel and the aqueous solution are mixed (26) to form a mixture. The mixture is fed into a gasifier (22) that contains molten salts of the alkali metal. The fuel is partially combusted in the gasifier to produce the combustible gas. At least a portion of the carbonate salt in the aqueous solution may be recovered (24) from a molten sulfide salt. The molten sulfide salt may be taken from the molten salts in the gasifier (22).

L'invention concerne un procédé de production d'un gaz combustible à partir d'un carburant carboné solide contenant du soufre. Dans le procédé, une solution aqueuse est fournie. Un soluté de la solution est un sel de carbonate d'un métal alcalin. Des particules du carburant et de la solution aqueuse sont mélangées (26) pour former un mélange. Le mélange est introduit dans un gazéifieur (22) qui contient des sels fondus du métal alcalin. Le carburant est partiellement brûlé dans le gazéifieur pour produire le gaz combustible. Au moins une partie du sel de carbonate dans la solution aqueuse peut être récupérée (24) à partir d'un sel de sulfure fondu. Le sel de sulfure fondu peut être prélevé des sels fondus dans le gazéifieur (22).

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