Silo for storing i.e. dry sludge, of wastewater treatment plant, has inner chimney communicating with atmosphere in top and bottom parts of outer envelope, where inner volume of chimney is free to circulate air and evacuate heat

摘要

The silo (S) has a cylindrical outer envelope (1) including top and bottom parts (1a, 1b) and formed of a metallic material. The envelope includes an inlet (E) and outlet (A) for bulk products. A top cap (2) closes the silo in the top part, and an evacuating device closes the silo in the bottom part. A metallic inner chimney (5) communicates with atmosphere in top and bottom parts, where inner volume of the chimney is free to circulate the air and evacuate the heat. The envelope and chimney are made of steel sheet.