UA67534U - Method for blast furnace cooling - Google Patents

Abstract

A method fot blast furnace cooling provides water supply to the circuit of water cooling with the circulating pump through the pressure pipeline in water-cooled elements of the blast furnace, removal of the heated water through outlet pipe and cooling thereof in a heat exchanger loop of water cooling, water supply from the drum-separator of the system for evaporative cooling by down pipeline into the elements of evaporative cooling of the blast furnace, the return of the steam and water mixture through the to lifting pipeline into the drum-separator, supplying of the steam system of evaporative cooling from the drum-separator for cooling thereof in a heat exchanger of evaporative cooling system and removal of condensate obtained from the heat exchanger of evaporative cooling system. Simmultaneously with the cooling of the heated water of water cooling circuit in the heat exchanger of this circuit, the heat is utilized inside it by heating the working fluid of the steam turbine. Low boiling liquid is used as the working fluid. Simmultaneously with the cooling of steam of system of evaporative cooling in a heat exchanger of the system of evaporative cooling, heat of this vapor is utilized inside it by the evaporation and superheating the steam heated in a heat exchanger of the loop of the cooling water of low boiling liquid. The obtained vapor of low boiling liquids is supplied into the steam turbine, rotating the blower of the blast blowing, and it is supplied to the heating in air heaters of the blast furnace.