Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides
Abstract
Alkali metals and sulfur may be recovered from alkali monosulfide and polysulfides in an electrolytic process that utilizes an electrolytic cell having an alkali ion conductive membrane. An anolyte includes an alkali monosulfide, an alkali polysulfide, or a mixture thereof and a solvent that dissolves elemental sulfur. A catholyte includes molten alkali metal. Applying an electric current oxidizes sulfide and polysulfide in the anolyte compartment, causes alkali metal ions to pass through the alkali ion conductive membrane to the catholyte compartment, and reduces the alkali metal ions in the catholyte compartment. Liquid sulfur separates from the anolyte and may be recovered. The electrolytic cell is operated at a temperature where the formed alkali metal and sulfur are molten.
- Inventors:
- Issue Date:
- Research Org.:
- Field Upgrading Limited, Calgary, CA
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1490855
- Patent Number(s):
- 10087538
- Application Number:
- 15/279,926
- Assignee:
- FIELD UPGRADING LIMITED (Calgary, CA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
- DOE Contract Number:
- FE0000408
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2016 Sep 29
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Gordon, John Howard. Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides. United States: N. p., 2018.
Web.
Gordon, John Howard. Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides. United States.
Gordon, John Howard. Tue .
"Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides". United States. https://www.osti.gov/servlets/purl/1490855.
@article{osti_1490855,
title = {Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides},
author = {Gordon, John Howard},
abstractNote = {Alkali metals and sulfur may be recovered from alkali monosulfide and polysulfides in an electrolytic process that utilizes an electrolytic cell having an alkali ion conductive membrane. An anolyte includes an alkali monosulfide, an alkali polysulfide, or a mixture thereof and a solvent that dissolves elemental sulfur. A catholyte includes molten alkali metal. Applying an electric current oxidizes sulfide and polysulfide in the anolyte compartment, causes alkali metal ions to pass through the alkali ion conductive membrane to the catholyte compartment, and reduces the alkali metal ions in the catholyte compartment. Liquid sulfur separates from the anolyte and may be recovered. The electrolytic cell is operated at a temperature where the formed alkali metal and sulfur are molten.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}
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