Title:
METHOD FOR PRODUCING VANADIUM ELECTROLYTIC SOLUTION FOR REDOX FLOW CELL
Document Type and Number:
WIPO Patent Application WO/2017/069223
Kind Code:
A1
Abstract:
[Problem] To provide a method for efficiently producing a high purity vanadium electrolytic solution from a combustion residue that includes uncombusted carbon and that has been emitted from a facility such as a refinery or a power plant. [Solution] A method for producing a vanadium electrolytic solution for a redox flow cell comprising: a vanadium eluate generation step for obtaining a vanadium eluate in which vanadium contained in a combustion residue obtained after combustion of a fossil fuel is eluted; a precipitation step for mixing a sulfide precipitant into the vanadium eluate to precipitate a solid precipitation in a reduced state; and a wet oxidation step including a process for adding dilute sulfuric acid to the solid precipitation separated from the eluate, to generate a vanadium sulfate solution.
Inventors:
SATO KANJI (JP)
SAKUMA AKIRA (JP)
KOBORI TAKEO (JP)
FURUKAWA HIDEKI (JP)
HIRANO KEIJI (JP)
NAKANISHI TATSUAKI (JP)
SAKUMA AKIRA (JP)
KOBORI TAKEO (JP)
FURUKAWA HIDEKI (JP)
HIRANO KEIJI (JP)
NAKANISHI TATSUAKI (JP)
Application Number:
PCT/JP2016/081188
Publication Date:
April 27, 2017
Filing Date:
October 20, 2016
Export Citation:
Assignee:
LE SYSTEM CO LTD (JP)
International Classes:
H01M8/18; C01G31/00; C22B3/44; C22B7/02; C22B34/22; H01M8/02
Foreign References:
| JP2000247645A | 2000-09-12 | |||
| JP2015151613A | 2015-08-24 | |||
| JP2011074406A | 2011-04-14 | |||
| JP2013203646A | 2013-10-07 |
Other References:
See also references of EP 3324474A4
Attorney, Agent or Firm:
NISHIYAMA, Tadakatsu (JP)
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