Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C25C-001/02
C25B-001/00
C10G-032/02
C25C-007/06
C25C-003/02
출원번호
US-0210891
(2014-03-14)
등록번호
US-9475998
(2016-10-25)
발명자
/ 주소
Gordon, John Howard
Alvare, Javier
출원인 / 주소
CERAMATEC, INC.
대리인 / 주소
Cha, Paul S.
인용정보
피인용 횟수 :
0인용 특허 :
37
초록▼
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 tha
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.
대표청구항▼
1. An electrolytic cell for oxidizing an alkali metal monosulfide or alkali metal polysulfides comprising: an anolyte compartment configured with an anode and containing an anolyte solution comprising an alkali metal monosulfide, an alkali metal polysulfide, or a mixture thereof and an anolyte solve
1. An electrolytic cell for oxidizing an alkali metal monosulfide or alkali metal polysulfides comprising: an anolyte compartment configured with an anode and containing an anolyte solution comprising an alkali metal monosulfide, an alkali metal polysulfide, or a mixture thereof and an anolyte solvent that partially dissolves elemental sulfur, the anolyte compartment further comprising an anolyte solution inlet and an anolyte solution outlet;a catholyte compartment configured with a cathode and containing a catholyte, wherein the catholyte comprises a molten alkali metal, the catholyte compartment further comprising a catholyte outlet;an alkali ion conductive membrane configured to selectively transport alkali ions, wherein the alkali ion conductive membrane is substantially impermeable to anions, the anolyte solvent, and dissolved sulfur;a source of electric potential electrically coupled to the anode and the cathode and configured to: oxidize the alkali metal monosulfide or polysulfide in the anolyte compartment to form liquid elemental sulfur and alkali metal ions;cause the alkali metal ions to pass through the alkali ion conductive membrane from the anolyte compartment to the catholyte compartment; andreduce the alkali metal ions in the catholyte compartment to form liquid elemental alkali metal;an elemental sulfur settling zone where the liquid elemental sulfur forms a second liquid phase and separates from the anolyte solution; anda sulfur outlet for removal of the liquid elemental sulfur from the electrolytic cell disposed at a location lower than the anolyte solution outlet. 2. The electrolytic cell according to claim 1, wherein the alkali ion conductive membrane comprises in part an alkali metal conductive ceramic or glass ceramic. 3. The electrolytic cell according to claim 1, wherein the alkali ion conductive membrane comprises a solid MSICON (Metal Super Ion CONducting) material, where M is Na or Li. 4. The electrolytic cell according to claim 1, wherein the anolyte solvent comprises one or more solvents selected from N,N-dimethylaniline, quinoline, tetrahydrofuran, 2-methyl tetrahydrofuran, benzene, cyclohexane, fluorobenzene, thrifluorobenzene, toluene, xylene, tetraethylene glycol dimethyl ether (tetraglyme), diglyme, isopropanol, ethyl propional, dimethyl carbonate, dimethoxy ether, dimethylpropyleneurea, formamide, methyl formamide, dimethyl formamide, acetamide, methyl acetamide, dimethyl acetamide, triethylamine, diethyl acetamide, ethanol and ethyl acetate, propylene carbonate, ethylene carbonate, and diethyl carbonate. 5. The electrolytic cell according to claim 1, wherein the anolyte solvent comprises from about 60-100 vol. % polar solvent and 0-40 vol. % apolar solvent. 6. A plurality of coupled electrolytic cells comprising a first electrolytic cell according to claim 1 and a second electrolytic cell according to claim 1, wherein the anolyte solution inlet of the second electrolytic cell is connected to the anolyte solution outlet of the first electrolytic cell. 7. A plurality of coupled electrolytic cells comprising a first electrolytic cell according to claim 1, a second electrolytic cell according to claim 1, a third electrolytic cell according to claim 1, and a fourth electrolytic cell according to claim 1, wherein the anolyte solution inlet of the fourth electrolytic cell is connected to the anolyte solution outlet of the third electrolytic cell, wherein the anolyte solution inlet of the third electrolytic cell is connected to the anolyte solution outlet of the second electrolytic cell, and wherein the anolyte solution inlet of the second electrolytic cell is connected to the anolyte solution outlet of the first electrolytic cell.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (37)
Schrader Darren E., Apparatus and system for securing cargo.
Baird ; Jr. William C. (Baton Rouge LA) Bearden ; Jr. Roby (Baton Rouge LA), Combined desulfurization and hydroconversion with alkali metal hydroxides.
Brons Glen B. (Phillipsburg NJ) Myers Ronald (Calgary CAX) Bearden ; Jr. Roby (Baton Rouge LA), Continuous in-situ combination process for upgrading heavy oil.
Pütter, Hermann; Huber, Günther; Schierle-Arndt, Kerstin; Schläfer, Dieter; Guth, Josef, Method for electrochemically producing an alkali metal from an aqueous solution.
Backer, Michael Wolfgang; Bank, Howard Marvin; Gohndrone, John Michael; Maki, William Charles; Skinner, Charles Edmund; Tomar, Anil Kumar; Yue, Hongjun, Preparation of sulfur-containing organosilicon compounds using a buffered phase transfer catalysis process.
Blum, Saul Charles; Sartori, Guido; Savage, David William; Gorbaty, Martin Leo; Ballinger, Bruce Henry; Anderson, Michael Paul; Ramanarayanan, Trikur Anantharaman; Martella, David J., Process for decreasing the acid content and corrosivity of crudes.
Sartori Guido ; Savage David William ; Gorbaty Martin Leo ; Ballinger Bruce Henry ; Blum Saul Charles ; Anderson Michael Paul ; Ramanarayanan Trikur Anantharaman ; Martella David J., Process for decreasing the acid content and corrosivity of crudes.
Brons Glen ; Myers Ronald Damian,CAX ; Bearden ; Jr. Roby ; MacLeod John Brenton,CAX, Process for desulfurization of petroleum feeds utilizing sodium metal.
Swanson Rollan (c/o Chemroll Enterprises ; Inc. ; 100 Wall St. New York NY 10005), Process for recovering hydrocarbon and other values from shale oil rock.
Chamberlain Pravia,Oscar Ren��; Cerqueira,Henrique Soares; Moreira,Elizabeth M.; Alvarenga Baptista,Cl��udia Maria de L.; Gomes,Jefferson Roberto; Bugueta,Paulo C��sar Peixoto, Process for reducing the naphthenic acidity of petroleum oils.
Stewart Donald L. (Greensburg PA) Van Linden Jan H. L. (Allison Park PA) LaCamera Alfred F. (Trafford PA) Pierce Thomas V. (Delmont PA) Parkhill James O. (Tarentum PA) Urbanic John M. (Pittsburgh PA), Salt-based melting process.
Weisbeck, Markus; Schild, Christoph; Wegener, Gerhard; Wiessmeier, Georg, Surface-modified mixed oxides containing precious metal and titanium, for the selective oxidation of hydrocarbons.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.