Process for the removal of no from fluid streams using a water-soluble polymeric chelate of a polyvalent metal
CA 1290312 C · Owner: Grinstead, Robert R. · Inventors: Grinstead, Robert R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention concerns to a cyclic continuous process and for the removal of NO and SO2 from a variety of fluid streams. A fluid stream containing NO and SO2 is contacted with an aqueous solution of a composition having a water-soluble organic polymeric chelate containing a polyvalent metal e.g . Fe (11). The, NO is catalytically absorbed and in the presence of SO2 the, imidodisulfonate is formed. Optionally a reducing agent, such as, sodium hydrogen sulfide is added to maintain the polyvalent metal in the reduced state. The process next includes removal of the imidodisulfonate formed. The separation of water and low molecular weight materials and products, e.g. molecular weight …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.