Product
Product Overview / Air Pollution Control Facilities
Air Pollution Control Facilities
1. combustion gas treatment process flow diagram
Combustion Boiler
Power Generation Facility
2. Air pollution control facilities (combustion gas treatment systems)
- technology overview
solid fuel boiler (at 12% O₂)
* Design basis: gas flow rate 20,000m³/day (H₂S inlet concentration 2,000ppm, outlet concentration 30ppm)
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classification
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NOₓ
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SOₓ
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HCl
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Dust
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Dioxins
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Legal emission limit (Clean Air Conservation Act)
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50 ppm
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20 ppm
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12 ppm
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15 ppm
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0.1Ng-Teq/Nm³
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Our emission level
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< 30ppm
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<10 ppm
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< 7ppm
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< 10ppm
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< 0.01
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SNCR
De-NOₓ
SDR
De-SOₓ HCl
BAG FILTER
De-Dust, Dioxin
SCR
De-Dioxin, NOX
WET SCRUBBER
De-HCl, SOₓ
3. Air pollution control facilities (combustion gas treatment systems)
- technology overview
Emission of completely harmless gas through a five-stage treatment process
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SNCR
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Primary removal of harmful gases using urea solution
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Semi-dry reaction tower (SDR)
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Secondary removal of harmful gases by spraying fine slaked-lime slurry
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Dry reaction system
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Tertiary removal of harmful gases and primary removal of dioxins by injecting powdered activated carbon and slaked lime powder
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filter dust collection system
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Additional reaction with unreacted chemicals for fourth-stage removal of harmful gases and 99.99% complete dust removal
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wet scrubber
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Fifth-stage removal of harmful gases and second-stage removal of dioxins using Sodium hydroxide
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White plume abatement system
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4. Air pollution control facilities (combustion gas treatment systems)
- technology overview
TMS measurement methods
technology overview TMS measurement methods
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NOₓ
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NDIR method (non-dispersive infrared)
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SO₂
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NDIR method
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CO
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NDIR method
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O₂
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Zirconia method
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Dust
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Light scattering method (in-situ type, sampling type)
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HCl
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Chloride ion electrode method
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Flow
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Pitot method (dynamic pressure, static pressure, atmospheric pressure → flow velocity)
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Temp
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RTD/thermocouple method
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