Dry |
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- Simplicity of design
- low investment costs
- high flexibility (temperature and capacity)
- No liquid effluents
- Possibility of removing micro-pollutants by adding a specific reagent
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- Need to use a high quality corbent to lower consumption of the reagent
- Large production of residues (unreacted reagent)
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Semi-wet |
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- Cheapest sorbent: CaO
- Absence of liquid effluents
- Possibility of adding a dry injection to improve flexibility and extend the level of performance (3/4 dry process)
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- Difficulty coping with unstable flue gas conditions
- Clogs easily
- Milk of lime preparation
- Maintenance operation
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WET |
- Neutralisation of pollutants with a scrubbing liquor
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- High efficiency
- low consumption of reagent
- Cheap reagent
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- High investment
- Effluent Management : Water & Plume
- Limitation of removal of minor pollutants (SO3, Dioxin, Hg)
- Not suited for the removal of dioxins
- Maintenance
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