Quaternary polyamines as sulfite oxidation inhibitors in amine s

Details Quaternary polyamines as sulfite oxidation inhibitors in amine s Quaternary polyamines as sulfite oxidation inhibitors in amine s

1990-12-06

1992-12-01

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

42324305, C01B 1700

Patent

active

051679418

ABSTRACT:
Inhibitors of oxidation of sulfites to sulfates in sulfur dioxide scrubbing solutions are disclosed. 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 1-3000 ppm in alkali solutions with which a sulfur dioxide containing gas stream is contacted. The scrubbing solutions contain amines such as piperazinones, morpholinones, piperidines, piperazines, piperazinediones, hydantoins, triazinones, pyrimidinones, oxazolidones, N-carboxymethyl ethylenediamines, etc.

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