Method and installation for gasifying carbonaceous compounds

C - Chemistry – Metallurgy – 10 – J

Patent

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C10J 3/57 (2006.01)

Patent

CA 2393088

The invention relates to a method of gasifying carbon-containing compounds incorporating mineral elements and/or potential contaminants, and it also relates to a gasification installation having means for containing a bath of molten slag, means for charging said compounds into said bath, means for injecting at least oxidizer into the bath so that the mixture of carbon- containing compounds and oxidizer is super- stoichiometric, whereby a first fraction of the compounds is pyrolyzed, a second fraction is subjected to a combustion reaction suitable for delivering heat energy to the bath of slag, and a third fraction diffuses into the bath, means for recovering the gas given off by the pyrolysis and the combustion of the first and second fractions, and means for lowering the temperature of a portion of the molten slag so as to allow it to solidify, thereby immobilizing at least a portion of the third fraction of the compounds containing mineral elements and/or potential contaminants.

L'invention concerne un procédé de gazéification de composés carbonés, comportant des charges minérales et/ou des contaminants potentiels, ainsi qu'une installation de gazéification comprenant des moyens pour contenir un bain de scories en fusion, des moyens pour charger lesdits composés dans ledit bain, des moyens pour injecter au moins le comburant dans le bain de sorte que le mélange, composés carbonés/comburant, soit sur-stoechiométrique, par quoi une première partie des composés est pyrolysée, une deuxième partie subit une réaction de combustion apte à céder de l'énergie thermique au bain de scories, et une troisième partie diffuse dans le bain, des moyens pour récupérer les gaz issus de la pyrolyse et de la combustion des première et deuxième parties, et des moyens pour abaisser la température d'une partie de la scorie en fusion de manière à la rendre solide, par quoi on immobilise au moins une portion de la troisième partie des composés contenant des charges et/ou des contaminants potentiels.

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