WO2022184467A1 - Electrolysis cell, electrolysis device for chlor-alkali electrolysis and use of an electrolysis cell for chlor-alkali electrolysis - Google Patents
Electrolysis cell, electrolysis device for chlor-alkali electrolysis and use of an electrolysis cell for chlor-alkali electrolysis Download PDFInfo
- Publication number
- WO2022184467A1 WO2022184467A1 PCT/EP2022/054033 EP2022054033W WO2022184467A1 WO 2022184467 A1 WO2022184467 A1 WO 2022184467A1 EP 2022054033 W EP2022054033 W EP 2022054033W WO 2022184467 A1 WO2022184467 A1 WO 2022184467A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrolysis
- anode
- electrolytic solution
- baffle plate
- anode chamber
- Prior art date
Links
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 103
- 239000003513 alkali Substances 0.000 title claims abstract description 31
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 87
- 239000000126 substance Substances 0.000 claims description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Inorganic materials [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 71
- 239000011780 sodium chloride Substances 0.000 description 36
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 26
- 238000002474 experimental method Methods 0.000 description 17
- 239000007789 gas Substances 0.000 description 15
- 239000001103 potassium chloride Substances 0.000 description 13
- 235000011164 potassium chloride Nutrition 0.000 description 13
- 230000005484 gravity Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000003014 ion exchange membrane Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000021615 conjugation Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
- C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
- C25B9/73—Assemblies comprising two or more cells of the filter-press type
- C25B9/75—Assemblies comprising two or more cells of the filter-press type having bipolar electrodes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
- C25B9/73—Assemblies comprising two or more cells of the filter-press type
- C25B9/77—Assemblies comprising two or more cells of the filter-press type having diaphragms
Definitions
- Electrolysis cell electrolysis device for chlor-alkali electrolysis and use of an electrolysis cell for chlor-alkali electrolysis
- electrolytic solution is consumed on the electrode surface and gas is produced on the electrode surface.
- the density, the temperature, and the composition of the electrolytic solution changes on the surface of the electrodes and air bubbles are generated on the electrodes' surfaces. Air bubbles or an inhomogeneous distribution of electrolyte, density, and temperature in the electrolytic solution are detrimental to a stable and efficient electrolysis process.
- US 6,503,377 Bl also aims at removing gas bubbles from the electrodes at a higher rate.
- the electrodes have been specifically shaped in order to accumulate and drive away the produced gas bubbles. This effects a circulation around the surface of the electrodes.
- US 2006/0042935 A1 mentions the use of a vertical baffle plate or cylindrical duct in order to achieve a more homogenous distribution of electrolytes within the electrolytic solution.
- US 2017/0306513 A1 discloses an ion exchange membrane electrolytic cell with circulation channels formed by one or more circulation plates, which are provided on a base plate of the anode and/or cathode chamber.
- the circulation plate has the structure of a special-shaped plate, not only the vertical circulation of the electrolytic cell, but also the circulation in the depth direction of the electrolytic cell can be facilitated.
- the term "similar density and/or temperature and/or concentration of sodium chloride and/or potassium chloride in the electrolytic solution” means a maximal difference of 5, 10, 15, 20, 25, 30, or 35 % across different locations within the anode chamber and/or within the horizontal layer.
- the anode chamber comprises an anode.
- the anode is arranged essentially vertically within the anode chamber.
- the anode chamber has the longest dimension/expansiveness in the vertical direction.
- the anode may be one single structural element or comprise several structural elements.
- the anode may have the form of a mesh.
- the circulation structure is preferably a structure for improving vertical homogeneity of the electrolytic solution.
- the term "improving vertical homogeneity of the electrolytic solution” means that density and/or temperature and/or the concentration of sodium chloride and/or potassium chloride in the electrolytic solution is made more even or similar across different vertical locations within the anode chamber.
- the ratio of the cross section of the upflow section to the cross section of the downflow section is 1 or less than 1, preferably 0.8 to 0.3, more preferably 0.6 to 0.4, most preferably about 0.43. This ratio allows a particular homogenous electrolytic solution.
- the at least one baffle plate is arranged such that a stream of electrolytic solution from the circulation structure and/or the at least one downcomer (i.e. from the downflow section) collides with the baffle plate.
- a stream of electrolytic solution from the circulation structure and/or the at least one downcomer i.e. from the downflow section
- This improves homogeneity of the electrolytic solution in the anode chamber.
- the highest detected concentration difference between the 18 locations was 30 g/L (232 g/L - 202 g/L).
- Table 4 Concentration of sodium chloride in the electrolytic solution at six different locations at six different heights of the electrolysis cell in two different runs (values in g/L).
- the highest average concentration difference was 14 g/L.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020237019937A KR20230104964A (en) | 2021-03-01 | 2022-02-18 | Electrolysis cell for chlor-alkali electrolysis, use of electrolysis device and electrolysis cell for chlor-alkali electrolysis |
CN202280008339.9A CN116635574A (en) | 2021-03-01 | 2022-02-18 | Electrolytic cell, electrolysis device for chlor-alkali electrolysis and use of an electrolytic cell for chlor-alkali electrolysis |
CA3196773A CA3196773A1 (en) | 2021-03-01 | 2022-02-18 | Electrolysis cell, electrolysis device for chlor-alkali electrolysis and use of an electrolysis cell for chlor-alkali electrolysis |
BR112023017493A BR112023017493A2 (en) | 2021-03-01 | 2022-02-18 | ELECTROLYSIS CELL, ELECTROLYSIS DEVICE FOR CHHLOR-ALKALI ELECTROLYSIS AND USE OF AN ELECTROLYSIS CELL FOR CHHLOR-ALKALI ELECTROLYSIS |
EP22706810.3A EP4301902A1 (en) | 2021-03-01 | 2022-02-18 | Electrolysis cell, electrolysis device for chlor-alkali electrolysis and use of an electrolysis cell for chlor-alkali electrolysis |
US18/279,830 US20240133055A1 (en) | 2021-03-01 | 2022-02-18 | Electrolysis cell, electrolysis device for chlor-alkali electrolysis and use of an electrolysis cell for chlor-alkali electrolysis |
JP2023549076A JP2024507353A (en) | 2021-03-01 | 2022-02-18 | Use of electrolytic cells, electrolyzers, and electrolytic cells for chlor-alkali electrolysis |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21159816.4 | 2021-03-01 | ||
EP21159816.4A EP4053307A1 (en) | 2021-03-01 | 2021-03-01 | Electrolysis cell, electrolysis device for chlor-alkali electrolysis and use of an electrolysis cell for chlor-alkali electrolysis |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022184467A1 true WO2022184467A1 (en) | 2022-09-09 |
Family
ID=74844751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/054033 WO2022184467A1 (en) | 2021-03-01 | 2022-02-18 | Electrolysis cell, electrolysis device for chlor-alkali electrolysis and use of an electrolysis cell for chlor-alkali electrolysis |
Country Status (8)
Country | Link |
---|---|
US (1) | US20240133055A1 (en) |
EP (2) | EP4053307A1 (en) |
JP (1) | JP2024507353A (en) |
KR (1) | KR20230104964A (en) |
CN (1) | CN116635574A (en) |
BR (1) | BR112023017493A2 (en) |
CA (1) | CA3196773A1 (en) |
WO (1) | WO2022184467A1 (en) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4415146A1 (en) | 1994-04-29 | 1995-11-02 | Uhde Gmbh | Special shaped electrodes avoiding gas build up in electrolytic processes |
US6200435B1 (en) | 1998-05-11 | 2001-03-13 | Chlorine Engineers Corp., Ltd. | Ion exchange membrane electrolyzer |
US6282774B1 (en) | 1996-10-05 | 2001-09-04 | Krupp Uhde Gmbh | Electrolysis apparatus and process for manufacturing same |
US6503377B1 (en) | 1998-04-11 | 2003-01-07 | Krupp Uhde Gmbh | Electrolysis apparatus for producing halogen gases |
WO2004040040A1 (en) | 2002-10-23 | 2004-05-13 | Uhdenora Technologies S.R.L. | Electrolytic cell comprising an interior trough |
US6773561B1 (en) | 1999-08-27 | 2004-08-10 | Asahi Kasei Kabushiki Kaisha | Unit cell for alkali chloride metal aqueous solution electrolytic tank |
US20060042935A1 (en) | 2002-11-27 | 2006-03-02 | Hiroyoshi Houda | Bipolar zero-gap type electrolytic cell |
WO2009007366A2 (en) | 2007-07-10 | 2009-01-15 | Uhdenora S.P.A. | Elastic current collector for electrochemical cells |
WO2010055152A1 (en) | 2008-11-17 | 2010-05-20 | Uhdenora S.P.A. | Elementary cell and relevant modular electrolyser for electrolytic processes |
US20170306513A1 (en) | 2014-12-03 | 2017-10-26 | Bluestar (Beijing) Chemical Machinery Co., Ltd. | Ion Exchange Membrane Electrolytic Cell |
-
2021
- 2021-03-01 EP EP21159816.4A patent/EP4053307A1/en not_active Withdrawn
-
2022
- 2022-02-18 CN CN202280008339.9A patent/CN116635574A/en active Pending
- 2022-02-18 WO PCT/EP2022/054033 patent/WO2022184467A1/en active Application Filing
- 2022-02-18 US US18/279,830 patent/US20240133055A1/en active Pending
- 2022-02-18 KR KR1020237019937A patent/KR20230104964A/en unknown
- 2022-02-18 CA CA3196773A patent/CA3196773A1/en active Pending
- 2022-02-18 JP JP2023549076A patent/JP2024507353A/en active Pending
- 2022-02-18 EP EP22706810.3A patent/EP4301902A1/en active Pending
- 2022-02-18 BR BR112023017493A patent/BR112023017493A2/en unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4415146A1 (en) | 1994-04-29 | 1995-11-02 | Uhde Gmbh | Special shaped electrodes avoiding gas build up in electrolytic processes |
US6282774B1 (en) | 1996-10-05 | 2001-09-04 | Krupp Uhde Gmbh | Electrolysis apparatus and process for manufacturing same |
US6503377B1 (en) | 1998-04-11 | 2003-01-07 | Krupp Uhde Gmbh | Electrolysis apparatus for producing halogen gases |
US6200435B1 (en) | 1998-05-11 | 2001-03-13 | Chlorine Engineers Corp., Ltd. | Ion exchange membrane electrolyzer |
US6773561B1 (en) | 1999-08-27 | 2004-08-10 | Asahi Kasei Kabushiki Kaisha | Unit cell for alkali chloride metal aqueous solution electrolytic tank |
WO2004040040A1 (en) | 2002-10-23 | 2004-05-13 | Uhdenora Technologies S.R.L. | Electrolytic cell comprising an interior trough |
US20060042935A1 (en) | 2002-11-27 | 2006-03-02 | Hiroyoshi Houda | Bipolar zero-gap type electrolytic cell |
WO2009007366A2 (en) | 2007-07-10 | 2009-01-15 | Uhdenora S.P.A. | Elastic current collector for electrochemical cells |
WO2010055152A1 (en) | 2008-11-17 | 2010-05-20 | Uhdenora S.P.A. | Elementary cell and relevant modular electrolyser for electrolytic processes |
US20170306513A1 (en) | 2014-12-03 | 2017-10-26 | Bluestar (Beijing) Chemical Machinery Co., Ltd. | Ion Exchange Membrane Electrolytic Cell |
Also Published As
Publication number | Publication date |
---|---|
JP2024507353A (en) | 2024-02-19 |
CA3196773A1 (en) | 2022-09-09 |
KR20230104964A (en) | 2023-07-11 |
CN116635574A (en) | 2023-08-22 |
EP4301902A1 (en) | 2024-01-10 |
EP4053307A1 (en) | 2022-09-07 |
BR112023017493A2 (en) | 2023-10-24 |
US20240133055A1 (en) | 2024-04-25 |
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