Process for absorption of sulfur compounds from fluids
US5342593A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1992 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Aug 10, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10K1/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Sulfur dioxide is removed from a fluid containing SO.sub.2 by employing as an absorbent therefor an aqueous solution of compound represented by Formula I: ##STR1## wherein X is --O--, --NR.sup.1 --, or --N.dbd.; each Y is independently --(CR.sup.2.sub.2)--, --(C.dbd.O)--, --O--, --NR.sup.1 --, --N.dbd., or --C(R.sup.2).dbd.; each R.sup.1 or R.sup.2 is independently hydrogen; an alkyl group; a hydroxyalkyl group; an aldehyde group; a carboxylic acid or salt group; or an alkyl group containing an aldehyde group, a carboxylic acid or salt group, ketone, carboxylic ester, ether, or sulfoxide group; and m is an integer preferably of from 2 to about 4. The absorbent solution preferably can be thermally regenerated by heating to remove SO.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.