Device and method for cooling fume intakes

摘要

A cooling device for fume intakes for exhausted gases from foundry furnaces comprises a flue pipe for extracting the fumes produced in premises containing a source of fumes, a cooling system consisting of a tube made of steel lined in appropriate areas of its surface and length and wound in a spiral. In the tube there circulates cooling water with a temperature of the water at entry and in operation kept constantly between 50 and 120° C., with a temperature variation between the inlet and the outlet of the tube in a range of 10-30° C. The lining of the tube may be made of special martensitic stainless steel, or of glassy alloy, or of Ni/Cr cermet.