Apparatus and methods for cooling exhaust gas streams containing suspended particles

摘要

Method and apparatus for cooling a hot gas stream containing suspended finely divided particles wherein a cooling fluid is circulated through confined cooling elements located in a large flow housing, the gas stream to be cooled passing exteriorly of the cooling elements in countercurrent heat exchange relationship therewith. The cooling fluid is circulated through the cooling elements in a confined path and cleaning means are provided inside the cooling elements which are arranged to impact the cooling elements periodically to thereby dislodge particles adhering to the exterior surfaces of such cooling elements.