Exhaust heat recovery improvement manner null of sintering ore

摘要

PURPOSE: To improve the recovery of vapor in quantity and save the power for a cooling air blower by adding, as a gas passes through a packed bed, low-frequency sound to the gas so as to promote the transfer of heat through the material and improve the recovery of exhaust heat in quantity. ;CONSTITUTION: In an air box 8 for supplying a cooling medium to a sintered ore-packed bed 7 from under a tubular low-frequency resonator 16 is provided so that a flow of gas blown by a cooling-air blower 2 is accompanied with a low-frequency sound of 15Hz to 20Hz and at a sound pressure level of 30kPa to 50kPa. Thus addition of low-frequency sound waves preferably to a location where a packed bed 7 is specially thick or where it exists in small grains, which addition utilizes the directivity of sound, or the ON-OFF control or the control of the intensity of low-frequency sound by the use of a control device makes it possible to break, by virtue of the vibration of low-frequency sound, a boundary film to the transmission of heat, which forms on the surface of a mass of sintered product, or locally improve the heat-transfer rate by hampering the growth.;COPYRIGHT: (C)1993,JPO&Japio