Sulfate Ion → Carbon Dioxide

HRID 1262510Notes

Reaction equation

HRID 1262510 reaction equation
[C:1]([O-])([O-:3])=[O:2].[Ca+2:5].S(=O)(O)[O-].[S:10]([O-:14])([O-:13])(=[O:12])=[O:11].S(=O)(=O)(O)O>>[S:10]([O-:14])([O-:13])(=[O:12])=[O:11].[Ca+2:5].[C:1](=[O:3])=[O:2]

Participants

6

Reactant 4

HCID 1117Sulfate IonHCID 1118Sulfuric Acid2×HCID 10112Calcium Carbonate2×HCID 104748Bisulfite

Product 2

HCID 280Carbon DioxideHCID 24497Calcium Sulfate

Procedure

oxidizing the regeneration bleed and then reacting the oxidized material in a first stage reactor with a calcium carbonate slurry, whereby alkali bisulfite is oxidized to alkali sulfate and sulfuric acid in the oxidation step and the sulfuric acid reacts with the calcium carbonate in the first stage reactor to produce calcium sulfate and carbon dioxide, which may be stripped off by an air stream fed to the bottom of the first stage reactor;

Sources & evidence

ORD record
ord-b1dfe65d8bf04c43b90dd4b8ebb44ae5
Source dataset
uspto-grants-1984_06
Patent number
US04452766

Reaction notes

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