Process for gasification of low rank carbonaceous material

C - Chemistry – Metallurgy – 10 – J

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C10J 3/00 (2006.01) C10J 3/64 (2006.01) C10J 3/66 (2006.01)

Patent

CA 2495228

A process for the gasification of low rank carbonaceous material, including the steps: (a) subjecting said low rank carbonaceous material to shearing stresses in order to cause attritioning of the microporous structure of said low rank carbonaceous material and release of water contained in the micropores; (b) continuing the shearing attritioning of step (a) until the low rank carbonaceous material forms into a plastic mass; (c) compacting the plastic mass of step (b) into compacted bodies; (d) heating the compacted bodies at temperatures sufficient to thermally decompose the compacted bodies to produce a reactive carbonaceous product; (e) reacting the reactive carbonaceous product with water vapour at a temperature sufficient to produce hydrogen and carbon monoxide containing gas.

L'invention concerne un procédé de gazéification d'une matière carbonée de rang bas, ce procédé consistant à : (a) soumettre ladite matière carbonée de rang bas à des contraintes de cisaillement en vue de provoquer une attrition de la structure microporeuse de cette matière et une libération de l'eau contenue dans les micropores ; (b) poursuivre l'attrition par cisaillement de l'étape (a) jusqu'à ce que la matière carbonée de rang bas devienne une masse plastique ; (c) compacter la masse plastique de l'étape (b) pour obtenir des corps compactés ; (d) chauffer ces corps compactés à des températures suffisantes pour qu'ils se décomposent thermiquement et forment un produit carboné réactif ; (e) faire réagir ce produit carboné réactif avec de la vapeur d'eau à une température suffisante pour produire un gaz contenant de l'hydrogène et du monoxyde de carbone.

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