Reaktionsgleichung
[S:1](=[O:3])=[O:2].[S:4]([O-:7])([O-:6])=[O:5].[Mg+2:8]>>[S:4](=[O:5])([OH:7])[O-:6].[Mg+2:8].[S:1](=[O:5])([OH:3])[O-:2]Komponenten
Versuchsvorschrift
U.S. Pat. No. 4,388,238 to Abrams, et al. describes how sulfur dioxide is contacted with a magnesium sulfite solution in a scrubbing zone at a pH in the range of about 6 to 7.5 in order to produce magnesium bisulfite. It also teaches providing a minor regeneration stream which is subjected to oxidation to oxidize bisulfite and sulfite to sulfate. This reference also teaches the use of a type S hydrated dolomitic lime for the spray dryer at a weight percent of 3-15% suspended solids and at a stoichiometric ratio of 1.1 to 1.5 and injected at a temperature of 145° to 165° F. The product is calcium sulfite and sulfate, magnesium sulfite and sulfate, unreacted lime, and flyash. However, the presence of calcium sulfite and sulfate and magnesium sulfate is undesirable.
Quellen und Nachweise
- ORD-Eintrag
- ord-bc1c74c61b8542d5abdc8fdf6e9837ee
- Quelldatensatz
- uspto-grants-1995_08
- Patentnummer
- US05439658
Verknüpfte Notizen
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