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Bilingual Tech Mapping for Pulp Paper Guideline - Asosiasi Pulp ...

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Type of<br />

FGD<br />

Method<br />

Dry Method<br />

Absorbent Reaction By Product<br />

O<br />

NH3 and water 2NH4OH+SO2(NH4)2SO3+H2O<br />

(NH4)2SO3+SO3+SO2+H2O2NH4HS<br />

Lime Spray<br />

Drying<br />

CaO and CaCO3<br />

powder<br />

Type of FGD Regeneration<br />

Wet<br />

Method<br />

Wellman-Lord (W-<br />

L) Process<br />

O3+H2<br />

Na2SO3 + SO2 + H2O 2NaHSO3<br />

Na2SO3 + 1/2O2 Na2SO4<br />

2Na2SO3+ SO3+ H2O Na2SO4 +<br />

2NaHSO3<br />

2NaHSO3 + heat Na2SO3 + SO2 +<br />

H2O<br />

Na2CO3 + SO2 Na2SO3 + CO2<br />

(NH4)2SO4<br />

CaSO3, CaSO4<br />

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