| abstract |
An installation for purifying boiler smoke, comprises: - a pipe (21) for circulating smoke extending from a smoke inlet zone (22) to a smoke outlet zone (23) and comprising a plurality of at least three absorption stages each having an at least approximately horizontal direction of smoke circulation, each stage comprising a milk circulation loop comprising a spraying element (27-2 ...), a zone of reception (C2...), and pumping means (31-2), this reception zone being located on an overflow discharge channel (30) and having a milk level and a lime concentration / lime lower than that of the stage which follows it but higher than that of circulation of the stage which precedes it, each loop being connected to a line of introduction of limestone / lime and to a line of air injection / oxygen. <IMAGE> |