Process and apparatus for producing cold and clean combustible gases by means of a gasification installation for solid combustibles

摘要

1. Process for producing cold, clean combustible gases by means of a gasifier of solid fuels of the type in which the gases are cooled and the condensates of tars and the particles in suspension are extracted therefrom, characterized in that : - the dust is removed form the gases, dry, in a dust-removing filter (11) after having cooled the gases in a first exchanger (121 ) to a temperature (t0) included between 150 degrees and 350 degrees C, depending on the nature of the filter and the gasified fuels ; - the gases are cooled in a second exchanger (122 ) to a first temperature t1 included between 70 degrees and 180 degrees C, depending on the nature of the gasified fuels and they are passed in a dry separator (13) of condensates of tars and hydrocarbons ; - the gases are cooled up to a second temperature (t2) included between 15 degrees and 65 degrees C in an exchanger-cooler 14 serving as water vapour condenser ; - the condensed water is separated ; - and the gases are filtered again in dry filters (17a, 17b).