Patent ID: 7087098
Filing Date: 2006-08-08
Classification: C10J,C10K

Abstract:
1. A method of gasifying carbon-containing compounds optionally incorporating mineral elements and/or potential contaminants, comprising the following steps: introducing, in the top portion of a furnace, at least said compounds, which are deposited on the surface of a bath of molten slag contained in the bottom portion of said furnace, and injecting, through a blast pipe inserted into said bath, an oxidizing gas into said bath so that the mixture of carbon-containing compounds and oxidizing gas is super-stoichiometric, whereby a first fraction of said compounds is pyrolyzed to produce synthetic gases, a second fraction is subjected to a combustion reaction delivering heat energy to said bath of slag in sufficient amount to maintain said bath in a fused state at a temperature comprised between 1100° C. and 1500° C., thereby enabling the pyrolysis of said first fraction, and a third fraction diffuses into said bath; recovering, in said top portion of said furnace, at least said synthetic gases that are suitable for being used as fuel and that result from the pyrolysis and the combustion of said first and second fractions, and which appear above said molten slag; and cooling at least a portion of the molten slag so as to solidify it, thereby immobilizing at least a portion of said third fraction of said compounds containing at least the mineral element and/or the potential contaminants.