PURPOSE: To remarkably increase the rate of recovery of heat by raising the temp. of blast furnace gas with heat recovered in a stage for cooling metallurgical slat at the inlet of a gas turtine, in facilities for generating electric power by the recovery of pressure from the top of a blast furnace.
CONSTITUTION: Blast furnace gas BFG exhausted from a blast furnace 1 is cleaned through dust removers 2, 3, fed to a gas turbine 5 for recovering pres sure and rotates a generator 6 to generate electric power. Molten blast furnace slag S discharged from the furnace 1 is agitated, granulated and fed to a cooler 9, where the granulated slag is cooled and the sensible heat of the slag is recovered by transfer to a heat medium. This heat medium is fed to a heat exchanger 4 to raise the temp. of the blast furnace gas BFG at the inlet of the gas turbine 5.
TATENO MASAKI
TAKAHASHI TSUTOMU
YOSHIDA SHUJI
