Quaternary polyamines as sulfite oxidation inhibitors

Details Quaternary polyamines as sulfite oxidation inhibitors Quaternary polyamines as sulfite oxidation inhibitors

C - Chemistry, Metallurgy

09

K

23/350, 31/79

C09K 15/20 (2006.01) B01D 53/14 (2006.01) B01D 53/50 (2006.01)

Patent

CA 2004051

ABSTRACT A sulfur dioxide scrubbing solution is disclosed that includes inhibitors of oxidation of sulfites to sulfates. The inhibitors are cationic polyelectrolytes which are water soluble, have a molecular weight of at least 10,000 daltons and contain quaternary amine groups. The polyelectrolytes are preferably present at 1 to 3000 ppm in alkali solutions with which a sulfur dioxide containing gas stream is contacted. 35,488-F

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