Global to push GA events into
skip to main content

Title: Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides

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 solution 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 solution and may be recovered. The electrolytic cell is operated at a temperature where the formed alkali metal and sulfur are molten.
Inventors:
;
Issue Date:
OSTI Identifier:
1330350
Assignee:
CERAMATEC, INC. (Salt Lake City, UT) NETL
Patent Number(s):
9,475,998
Application Number:
14/210,891
Contract Number:
FE0000408
Resource Relation:
Patent File Date: 2014 Mar 12
Research Org:
Ceramatec, Inc., Salt Lake City, UT (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Other works cited in this record:

Electrolytic Process and Cell
patent, July 1924

Treatment of Hydrocarbon Stocks with Sodium
patent, November 1956

Nuclear Alkylation of Certain Aromatic Hydrocarbons with Alkali Metals as Catalysts
patent, May 1958

Treatment of Alkylation Feed Stock with Sodium, Potassium, or Lithium Hydroxide Solution
patent, February 1970

Process for the Desulfurization of Petroleum Oil Fractions
patent, January 1974

Alkali Metal Desulfurization Process for Petroleum Oil Stocks Using Low Pressure Hydrogen
patent, January 1974

Process for the Desulfurization of Petroleum Oil Stocks
patent, January 1974

Alkali Metal Desulfurization Process for Petroleum Oil Stocks
patent, February 1974

Process for upgrading a hydrocarbon fraction
patent, June 1976

Combined disulfurization and conversion with alkali metals
patent, February 1978

Upgrading hydrocarbonaceous oils with an aqueous liquid
patent, January 1984

Process for recovering hydrocarbon and other values from shale oil rock
patent, June 1984

Enhanced recovery of hydrocarbonaceous fluids from the oil shale
patent, February 1985

Process for selective removal of CCR, arsenic and conjugated diolefins from shale oil
patent, February 1985

Hydrotreating of carbonaceous materials
patent, August 1986

Upgrading of low value hydrocarbons using a hydrogen donor and microwave radiation
patent, July 1994

Continuous in-situ combination process for upgrading heavy oil
patent, December 1997

Process for the alkylation of aromatics
patent, May 1998

Methods for adding value to heavy oil utilizing a soluble metal catalyst
patent, August 1999

Continuous in-situ combination process for upgrading heavy oil
patent, August 1999

Electrolytic process for treating aqueous waste streams
patent, October 2000

Process for desulfurization of petroleum feeds utilizing sodium metal
patent, April 2001

Apparatus and system for securing cargo
patent, August 2001

Low temperature alkali metal electrolysis
patent, April 2002

Zeolite/alumina catalyst support compositions and method of making the same
patent, July 2002

Desulfurization with improved sorbent regeneration
patent, October 2003

Continuous process for the synthesis of nano-scale precious metal particles
patent, March 2004

Surface-modified mixed oxides containing precious metal and titanium, for the selective oxidation of hydrocarbons
patent, May 2004

Low temperature alkali metal electrolysis
patent, September 2004

Process for reducing the naphthenic acidity of petroleum oils
patent, March 2009

Process for the recovery of materials from a desulfurization reaction
patent, March 2011

Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides
patent, January 2012

Desulphurization of gasoline by metallic sodium
journal, July 1976

Hydrodesulfurization and Hydrodenitrogenation
book, January 2002
  • S├ínchez-Delgado, Roberto A.
  • Organometallic Modeling of the Hydrodesulfurization and Hydrodenitrogenation Reactions, Vol. 24, p. 1-34
  • DOI: 10.1007/0-306-47619-3_1

Similar records in DOepatents and OSTI.GOV collections: