Patent ID: 6176187
Filing Date: 2001-01-23
Classification: C02F,C04B,Y02P,Y02W

Abstract:
A system for handling and feeding aqueous sludge to a combustor such that pollutant emissions resulting from combustion of the sludge are reduced, said system comprising:(a) means for combustion including a cement kiln containing a flue gas outlet;(b) a precalciner associated with the kiln, said precalciner containing a flue gas outlet;(c) first receiving means for receiving the sludge to be combusted;(d) means for transporting the sludge from said first receiving means to a sludge conduit; and(e) means for introducing the sludge from the sludge conduit into the means for combustion at a point located in the precalciner flue gas outlet downstream of a precalciner combustion zone and at a point wherein the gases in the kiln flue gas outlet and the precalciner flue gas outlet are mixed which is effective to reduce pollutant emissions produced by the combustion of the sludge in the means for combustion.