Sulfur Dioxide → Sulfite

HRID 2164393Notes

Reaction equation

HRID 2164393 reaction equation
[OH-].[Ca+2].[OH-].[S:4]([O-:7])([O-:6])=[O:5].[Ca+2].[S:9]([O-:13])([O-:12])(=[O:11])=[O:10].[Ca+2].S(=O)=O>>[S:4]([O-:7])([O-:6])=[O:5].[S:9]([O-:13])([O-:12])(=[O:11])=[O:10]

Participants

6

Reactant 4

HCID 1119Sulfur DioxideHCID 24497Calcium SulfateHCID 6093208Calcium HydroxideHCID 10154041Calcium sulfite

Product 2

HCID 1099SulfiteHCID 1117Sulfate Ion

Procedure

While the flue gas and entrained droplets of reactant are enroute to the collecting member, a substantial portion of the sulfur oxides in the flue gas is absorbed into the droplets and reacts with reactant to form particles of sulfite and sulfate compounds. For example, if slaked lime is used as a reactant, the reactant particles are converted to calcium sulfite, calcium sulfate and the corresponding hydrates. Thus, the mat of bonded particles accumulating on the collection member is made up of partially dried particles of the reaction product and unreacted reactant, as well as particulate material such as fly ash. As the flue gas flows through the pores of the mat, it contacts the moist particles of unreacted reactant and sulfur dioxide reacts therewith to form sulfite and sulfate compounds.

Workup

  1. customreacts

Sources & evidence

ORD record
ord-fc245cbe34b34a0e8bee7b832617d34d
Source dataset
uspto-grants-1985_03
Patent number
US04504451

Reaction notes

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