FLUIDIZING AIR OFF GAS FLUIDIZED BED PYROLYSIS POST-COMBUSTION CHAMBER AIR SO2 (g) As2O3 (s) As2S2 (g) ARSENIC-FREE CONCENTRATE COOLING SCREW As2O3 (s) O/F U/F 3 TO MARKET / LEACHING PROCESS 5.3 % As CONCENTRATE CYCLONE 1 TO VITRIFICATION PLANT COOLING WATER 4 TO ATMOSPHERE GYPSUM TO LANDFILL LIME SLURRY TANK LIME SILO OFFLOAD TRUCK SO2 SCRUBBER GYPSUM RETENTION TANK TO EFFLUENTS PROCESS WATER WATER WASTE HEAT BOILER OFF GAS OFF GAS CYCLONE CYCLONE TO BAGHOUSE WATER GAS SPRAY COOLER As2O3 (s) STEAM SO2 (g) As2O3 (g) SO2 (g) As2O3 (g) Water WESP ARSENIC SLURRY TANK FILTER PRESS FILTER PRESS As2O3 (s) 2 BLEED Dust Trap Dust Trap Figure 3 – Integrated flowsheet: pyrolysis + arsenic recovery with wet electrostatic precipitator FLUIDIZING AIR OFF GAS FLUIDIZED BED PYROLYSIS POST-COMBUSTION CHAMBER AIR SO2 (g) As2O3 (s) As2S2 (g) ARSENIC-FREE CONCENTRATE COOLING SCREW O/F U/F 2 TO MARKET / LEACHING PROCESS 5.3 % As CONCENTRATE CYCLONE 1 COOLING WATER TO ATMOSPHERE GYPSUM TO LANDFILL LIME SLURRY TANK LIME SILO OFFLOAD TRUCK SO2 SCRUBBER GYPSUM RETENTION TANK TO EFFLUENTS PROCESS WATER WATER WASTE HEAT BOILER OFF GAS OFF GAS CYCLONE CYCLONE TO BAGHOUSE WATER GAS SPRAY COOLER As2O3 (s) STEAM SO2 (g) As2O3 (g) SO2 (g) As2O3 (g) ARSENIC SCRUBBER QUENCH SO2 (g) Dust Trap SCRUBBER BLOWDOWN TO ARSENIC PRECIPITATION 3 TO VITRIFICATION PLANT WEAK ACID 7-8% H2SO4 4 Dust Trap Figure 4 – Integrated flowsheet: pyrolysis + arsenic recovery with scrubber
RkJQdWJsaXNoZXIy MTM0Mzk2