Sulfur Dioxide → Magnesium sulfite

반응식

[S:1](=[O:3])=[O:2].[Mg:4].[OH-:5].[OH-].[Mg+2]>>[S:1]([O-:5])([O-:3])=[O:2].[Mg+2:4].[S:1](=[O:5])([OH:3])[O-:2].[Mg+2:4].[S:1](=[O:5])([OH:3])[O-:2]

참가 물질

반응물 3

HCID 1119Sulfur Dioxide2회

HCID 73981Magnesium Hydroxide2회

HCID 5462224Magnesium

생성물 2

HCID 3014583Magnesium sulfite

HCID 10130272Magnesium bisulfite

실험 절차

In lieu of a limestone or lime-based scrubbing system, flue gas containing sulfur dioxide may be treated by passing it through a scrubbing unit that utilizes a magnesium-containing scrubbing agent, e.g., a magnesium hydroxide slurry. The magnesium hydroxide reacts with sulfur dioxide to produce magnesium sulfite and magnesium bisulfite. The magnesium hydroxide slurry also reacts with hydrochloric acid in the flue gas, producing magnesium chloride, although there is very little hydrochloric acid in the flue gas compared to sulfur dioxide. The following chemical reactions occur in the scrubbing unit: SO2+Mg(OH)2→MgSO3+H2O (1) H2O+SO2+MgSO3→Mg(HSO3)2 (2) Mg(HSO3)2+Mg(OH)2→2MgSO3 (3) 2HCl+Mg(OH)2→MgCl2+2H2O (4)