UA60416U - Blast furnace air heater - Google Patents

Abstract

A blast furnace air heater contains a casing 5 with lining 9, nozzle 12, the dome 10, the hot blast choke 19 is located above the nozzle 12, prechamber 7, located at the top of the dome 10 coaxial with it and it has a casing 8 with lining 13, which is carried out independent of lining 9 of the the dome 10 with the self-support on the housing 11 of the dome 10, the internal gas and air collectors, located between the lining of the casing 8 and the vertical side wall 6 of prechamber 7 lining, having the outgoing through channels 22 and 23, carried out in the vertical side wall 6 of the prechamber 7 lining by layers with the possibility of gas and air supply directly into the prechamber 7. Each collector is made in the form located diametrically opposite to each other hollow gas 2 and air 4 half-manifolds, that have common vertical dividing walls 20, and they are connected one to another with a gas pipe 1, and the second air pipe 3, at that each half-manifold contains set on the outer perimeter of the vertical wall of the prechamber, including separating walls 20, gas-tight caisson 21 with orifices, coinciding with the orifices of the initial through channels 22 and 23 in the vertical wall 6 of the prechamber.