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Title: Electrochemical separation and concentration of sulfur containing gases from gas mixtures

Abstract

A method of removing sulfur oxides of H.sub.2 S from high temperature gas mixtures (150.degree.-1000.degree. C.) is the subject of the present invention. An electrochemical cell is employed. The cell is provided with inert electrodes and an electrolyte which will provide anions compatible with the sulfur containing anions formed at the anode. The electrolyte is also selected to provide inert stable cations at the temperatures encountered. The gas mixture is passed by the cathode where the sulfur gases are converted to SO.sub.4.sup.= or, in the case of H.sub.2 S, to S.sup.=. The anions migrate to the anode where they are converted to a stable gaseous form at much greater concentration levels (>10X). Current flow may be effected by utilizing an external source of electrical energy or by passing a reducing gas such as hydrogen past the anode.

Inventors:
 [1]
  1. (3805 Woodrail-on-the-Green, Columbia, MO 65201)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
863781
Patent Number(s):
4246081
Assignee:
Winnick, Jack (3805 Woodrail-on-the-Green, Columbia, MO 65201) LLNL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electrochemical; separation; concentration; sulfur; containing; gases; gas; mixtures; method; removing; oxides; temperature; 150; degree; -1000; subject; cell; employed; provided; inert; electrodes; electrolyte; provide; anions; compatible; formed; anode; selected; stable; cations; temperatures; encountered; mixture; passed; cathode; converted; migrate; gaseous; form; levels; 10x; current; flow; effected; utilizing; external; source; electrical; energy; passing; reducing; hydrogen; past; containing gases; reducing gas; removing sulfur; sulfur containing; sulfur oxide; temperature gas; sulfur oxides; inert electrode; gas mixtures; electrical energy; electrochemical cell; current flow; gas mixture; containing gas; concentration levels; external source; stable gaseous; anions formed; gaseous form; sulfur gas; chemical separation; concentration level; stable gas; electrochemical separation; /205/204/

Citation Formats

Winnick, Jack. Electrochemical separation and concentration of sulfur containing gases from gas mixtures. United States: N. p., 1981. Web.
Winnick, Jack. Electrochemical separation and concentration of sulfur containing gases from gas mixtures. United States.
Winnick, Jack. Thu . "Electrochemical separation and concentration of sulfur containing gases from gas mixtures". United States. https://www.osti.gov/servlets/purl/863781.
@article{osti_863781,
title = {Electrochemical separation and concentration of sulfur containing gases from gas mixtures},
author = {Winnick, Jack},
abstractNote = {A method of removing sulfur oxides of H.sub.2 S from high temperature gas mixtures (150.degree.-1000.degree. C.) is the subject of the present invention. An electrochemical cell is employed. The cell is provided with inert electrodes and an electrolyte which will provide anions compatible with the sulfur containing anions formed at the anode. The electrolyte is also selected to provide inert stable cations at the temperatures encountered. The gas mixture is passed by the cathode where the sulfur gases are converted to SO.sub.4.sup.= or, in the case of H.sub.2 S, to S.sup.=. The anions migrate to the anode where they are converted to a stable gaseous form at much greater concentration levels (>10X). Current flow may be effected by utilizing an external source of electrical energy or by passing a reducing gas such as hydrogen past the anode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Patent:

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