Heat exchanger for recovery of heat energy from dust-containing waste gases
AssigneeStal-Laval Apparat AB
InventorsKarl-Erik Berkestad, Lennart Danielsson, Erik Henriksson, Torsten Svensson, Artur stlund
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Abstract
A heat exchanger for recovering the heat energy content in furnace waste gases and for recovering much of the dust entrained therewith includes a hollow duct through which the waste gases pass, and which contains first and second tube bundles arranged one after the other and a dust collection surface therebetween. The heat content in the waste gases is transferred to water passing through the two tube bundles and dust is deposited on the dust collection surface.
Claims7
A heat exchanger for the recovery of heat energy in dust-containing hot waste gases, said heat exchanger comprising
- means forming a hollow duct through which the hot dust-containing waste gases flow,
- at least one first pipe positioned within said hollow duct, each said first pipe having a smooth outer surface and being capable of carrying a heat-absorbing fluid therethrough, each said first pipe having a serpentine configuration,
- at least one second pipe positioned within said hollow duct, each said second pipe having fins on the outer surface and being capable of carrying a heat-absorbing fluid therethrough, each said second pipe having a serpentine configuration, and
- means forming a dust collection surface located between said first and second pipes.
Dependencies are inferred from the claim text.