BFG treatment and sensor Outline BFG treatment system and sensor BFG treatment system BF sensor BF expert system Blast furnace BFG treatment system BFG treatment system BFG typical composition BFG components could be changed with BF operating conditions (oxygen-rich operation, blast humidity) and Internal reaction (bosh heat, material distribution mode, updraft path ) BFG treatment system BFG treatment process 1.Dust Catcher 2.Scrubber & Cooling 3.Demister 4.Top gas Recovery Turbine Dust catcher dust catcher (about 50% efficiency) cyclone (about 80-90% efficiency) Dust catcher efficiency ITEM Gas Flow Inlet Tmp Inlet Press Inlet Dust Outlet Dust POSCO E&C 645,000 300C 2.5 Bar 20g/Nm3 5~10 g/Nm3 Paul Wurth 608,000 150C 2.5 Bar 20g/Nm3 < 1.8 g/Nm3 Cyclone dust catcher character TRT PW BFG water washing and demist system (1) (1) (2) (3) (3) (4) (4) (5) (5) (2) PW cyclone PW cyclone wear-resistant coating PW cyclone wear-resistant coating PW cyclone wear-resistant coating PW water spray nozzle PW BFG water spray scrubber TRT (Top gas Recovery T urbine ) BF sensor BF sensor What kind of sensor does BF need? BF sensor type BF top thermometer