Magnesium sulfite → Sulfuric acid magnesium salt (1:1)

HRID 977034

Reaction equation

[S:1]([O-:4])([O-:3])=[O:2].[Mg+2:5].[S:6](=[O:9])([OH:8])[O-:7].[Mg+2].[S:11](=[O:14])([OH:13])[O-:12]>>[S:1]([O-:7])([O-:4])(=[O:3])=[O:2].[Mg+2:5].[S:11](=[O:12])([OH:14])[O-:13].[Mg+2:5].[S:6](=[O:7])([OH:9])[O-:8].[S:1]([O-:4])([O-:3])=[O:2].[Mg+2:5]

Participants

Reactant 2

HCID 3014583Magnesium sulfite

HCID 10130272Magnesium bisulfite

Product 3

HCID 24083Sulfuric acid magnesium salt (1:1)

HCID 3014583Magnesium sulfite

HCID 10130272Magnesium bisulfite

Procedure

In a process for desulfurizing a sulfur dioxide-containing gas stream where the gas stream is contacted, in a wet scrubbing unit, with an aqueous solution of magnesium scrubbing components which react with sulfur dioxide to form magnesium sulfite and magnesium bisulfite, and a portion of the resultant aqueous solution containing magnesium sulfite and magnesium bisulfite is removed from the scrubber and oxidized in an oxidizing unit to form an aqueous solution of magnesium sulfate containing about 500-600 ppm of magnesium bisulfite and magnesium sulfite as impurities, with the aqueous solution of magnesium sulfate contacted with lime to form calcium sulfate, which is removed therefrom, and an aqueous suspension of magnesium hydroxide containing a minor amount of calcium sulfite which is returned to the wet scrubbing unit, the improvement comprising:

Workup

customis removed from the scrubber

Sources & evidence

ORD record: ord-2a83902aed7949178cd3dada66e5b91a
Source dataset: uspto-grants-1997_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05614158

Linked notes

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