EP1103636A1 - Elektrolyseplatte - Google Patents
Elektrolyseplatte Download PDFInfo
- Publication number
- EP1103636A1 EP1103636A1 EP00124257A EP00124257A EP1103636A1 EP 1103636 A1 EP1103636 A1 EP 1103636A1 EP 00124257 A EP00124257 A EP 00124257A EP 00124257 A EP00124257 A EP 00124257A EP 1103636 A1 EP1103636 A1 EP 1103636A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrolysis
- plate
- electrolysis plate
- plastic
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
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
- 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
- the invention does not relate to an electrolysis plate consisting of an outer conductive frame, in particular made of a fiber-reinforced cresol resin, one in it stored, electrically conductive, bipolar, preferably slotted on both sides Graphite plate, the plastic aprons in the area of the electrolyte supply Has positive guidance for the electrolyte solutions.
- the invention further relates to Electrolysers built on the basis of the electrolysis plate mentioned.
- electrolysers for example hydrochloric acid electrolyzers
- electrolysis plates in the form of frame elements which carry electrically conductive, bipolar graphite plates as an anode / cathode.
- the frame elements are generally arranged in blocks of typically 32 or 38 plates and thereby form a unit as an electrolyzer with 31 or 37 electrolysis cells for the electrolysis of, for example, hydrochloric acid to chlorine gas and hydrogen gas, which are operated at current densities of up to 4,800 A / m 2 .
- the hydrochloric acid is fed through the frame from the passages in the lower area of the frame elements via specially arranged holes on the anolyte or catholyte side from below into the anolyte or catholyte space and in the upper area of the frame elements through outlet holes in the upper passages Frame elements derived together with the gases generated.
- Known electrolysis elements are, depending on the current density, from 130 1 / h to 180 1 / h Anolyte and catholyte acid supplied.
- the 60 - 80 ° C hot hydrochloric acid meets that Diaphragm separating anolyte space from catholyte space and redistributes itself Redirection e.g. on the diaphragm via the slots in the graphite or the channel randomly between frame and graphite plate.
- the object of the invention is to provide an electrolysis element that has the disadvantages avoids the known construction and a comparable longer service life having.
- the object is achieved in that in an electrolysis element the anolyte and catholyte side of the electrolysis element by attaching an inert film, in particular made of polyvinyl difluoride or a polyfluorocarbon to protect the diaphragm or membrane against chemical, thermal and mechanical corrosion by the from the in Electrolytic element existing holes impinging anolyte and catholyte beam is protected.
- an inert film in particular made of polyvinyl difluoride or a polyfluorocarbon to protect the diaphragm or membrane against chemical, thermal and mechanical corrosion by the from the in Electrolytic element existing holes impinging anolyte and catholyte beam is protected.
- the invention relates to an electrolysis plate consisting of an outer non-conductive frame, in particular consisting of a fiber-reinforced cresol resin, an electrically conductive, bipolar, preferably slotted on both sides Graphite plate that plastic aprons in the area of the electrolyte feed for positive guidance for the electrolyte solutions.
- the structure of the frame element preferably corresponds to the one as it is is known from the document DT 23 27 883, which is hereby included as a disclosure is.
- the invention further relates to electrolysers based on the abovementioned Electrolysis plate.
- the electrolysis plate with plastic aprons is preferred in the hydrochloric acid electrolysis used as forced acid control for the hydrochloric acid inlets on both sides.
- the electrically conductive, bipolar graphite plate is on the non-conductive frame assembled.
- the electrolysis plate essentially contains one anodic side, one cathodic side, holes, an electrolyte supply and plastic aprons.
- the size of the electrolysis plate corresponds approximately to the size of known electrolysis plates and can depend on the desired application of the electrolysis plate vary.
- the plastic aprons are made of inert foils in the area of the electrolyte supply are attached. They are designed in such a way that the Electrolyte solutions are achieved in such a way that the plastic aprons are a diaphragm or a membrane from chemical, thermal and mechanical destruction protect the anolyte and catholyte currents usually in electrolysers cause conventional design.
- the penetration of anolyte acid or Catholyte acid significantly reduced by a diaphragm reducing product quality is significantly increased, for example when using the invention Electrolysis plate significantly less in the electrolysis of hydrochloric acid Hydrogen in chlorine or significantly less chlorine in hydrogen.
- the size of the Plastic aprons can vary and depend primarily on the size of the electrically conductive, bipolar graphite plate.
- the construction of the electrolyte supply, in particular acid conduction, is like this effective that they have a direct impact on the acid after about 20 - 100 months Use observed damage areas, e.g. on the diaphragms, safely prevented.
- Triangular corner pieces are preferred in front of the acid entry peaks in the Electrolysis plate installed.
- the installed foils are preferably made of polytetrafluoroethylene (PTFE) or PVDF (polyvinylidene fluoride) manufactured.
- PTFE polytetrafluoroethylene
- PVDF polyvinylidene fluoride
- the incorporation of the forced acid control according to the invention surprisingly showed additionally a significant voltage reduction of 3% - 8% per electrolyzer with increasing plant load compared to electrolyzers without forced acid control and significantly increases the economy of hydrochloric acid electrolysis.
- the diaphragm preferably consists of e.g. tightly woven, thermostabilized Polyvinyl chloride or polyvinyl difluoride or a blend of PVC and PVDF or is in particular a membrane made of a sulfonated fluorocarbon.
- a hydrochloric acid electrolyzer has the one shown in principle in FIG. 1 in a side view Construction. The electrolyser is shown broken open in the middle.
- the electrolyzer consisting of 32 by means of clamping bolts 2, is on a supporting frame 1 compressed electrolysis plates 4 built.
- the electrolysis plates 4 have Passages passing through the electrolyser at the bottom right and left 9 for the catholyte acid and feedthroughs 10 for the anolyte acid, which be supplied with fresh acid.
- Busbars 3 are provided, which the connections for the graphite anodes or -Electively contact cathodes with a power supply, not shown.
- FIG. 2 shows the basic structure of an electrolysis plate 4. Bores 11 connect the passages 9 for the catholyte with the respective catholyte space and holes 12 the passages 10 for the anolyte with the corresponding Anolyte space.
- the hydrochloric acid passes through the cathode or anode compartment upwards and occurs together with the electrolysis gases in the catholyte space in the upper one Area of the electrolytic plate 4 through holes 13 to the passages 8 and Anolyte space through holes 14 to the passages 7 again.
- foils 15 and 16 attached, which the diaphragm 6th protect.
- the foils have a thickness of 0.5 mm and became more unequal in shape
- Triangles with the dimensions 190 x 290 mm with rounded corners and smooth cut edges to the diaphragm 6 or the membrane in the corners the acid inlet openings in special holes in the frame with rounded, acid-resistant plastic rivets (not shown) attached.
- One foil triangle each 15 and 16 are provided here before the anolyte entry and catholyte entry (FIG. 3).
- the gases generated at the anode and cathode ensure sufficient mixing and supplying the anode or cathode with hydrochloric acid.
- Fig. 4 shows the schematic side view of a variant of the electrolysis plate according to example 1 with horizontally continuous aprons.
- the built-in aprons which are mainly used for mechanical protection
- the membranes used were made from a PTFE or PVDF strip of length 1760 mm and width 190 mm. Throughout the film has a width of 60 mm, but both corners end in isosceles triangles, the 220 mm Start from the end and have an outer edge length of 190 mm. All edges are rounded and deburred.
- the attachment is as described in Example 1 with plastic rivets in the electrolysis frame 4 on the anolyte and catholyte side. (Fig. 4)
- FIG 5 shows the schematic side view of a further variant of the electrolysis plate according to example 1 with triangular aprons and horizontally and vertically continuous Perforated films in the edge area of the electrolysis plate 4.
- the frame 4 To protect diaphragm 6 or membrane is here on the frame 4 on both sides one perforated side film 17 each with a thickness of 0.25 mm and a width of 40 mm introduced, the graphite overlapping at least 10 mm from the perforated film shall be.
- the upper film 18 is made of 100 mm high perforated film, 0.25 mm thick, the lower approx. 60 mm high.
- the triangular aprons 15 and 16, respectively, the inlet holes 11 and 12 are attached for facing away from anolyte and catholyte acid are also made of perforated film. The film is cut in this way. that no holes were cut are.
- the perforated foil cover is here both on the anode and on applied to the cathode. (Fig. 5)
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Abstract
Description
- Fig. 1
- die schematische Seitenansicht eines Elektrolyseurs für die Salzsäureelektrolyse
- Fig.2
- den grundsätzlichen Aufbau einer Elektrolyseplatte in Seitenansicht
- Fig.3
- die schematische Seitenansicht auf eine Elcktrolysepatte germäß der Erfindung
- Fig.4
- die schematische Seitenansicht auf eine Variante der Elektrolyseplatte gemäß Fig. 3
- Fig.5
- die schematische Seitenansicht auf eine weitere Variante der Elektrolyseplatte gemäß Fig. 3
Claims (7)
- Elektrolyseplatte, bestehend aus einem äußeren, nicht leitenden Rahmen (4), insbesondere bestehend aus einem faserverstärkten Kresolharz, einer darin gelagerten, elektrisch leitfähigen, bipolaren, bevorzugt beidseitig geschlitzten Graphitplatte (5), die im Bereich der Elektrolytzuführung (9; 10) Kunststoffschürzen (15; 16) zur Zwangsführung für die Elektrolytlösungen aufweist.
- Elektrolyseplatte nach Anspruch 1, dadurch gekennzeichnet, dass die Elektrolyseplatte mit Kunststoffschürzen (15; 16) ausgebildet ist, die bei der Salzsäureelektrolyse als Säurezwangsführung für die beidseitigen Salzsäurezuläufe dient.
- Elektrolyseplatte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Kunststoffschürzen (15; 16) aus Polytetrafluorethylen (PTFE) oder PVDF gefertigt ist.
- Elektrolyseplatte nach Anspruch 3, dadurch gekennzeichnet, dass die Flächenform der einzelnen Kunststoffschürzen (15; 16) dreieckig ist.
- Elektrolyseplatte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zusätzlich waagerecht und senkrecht im Randbereich des Rahmens (4) angeordnete durchgehende gelochte Bänder (17; 18), insbesondere aus Kunststofffolien, vor Eintrittsbohrungen und im Kanal zwischen Elektrolyserahmen und Graphitplatte angeordnet sind.
- Elektrolyseplatte nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Kunststoffschürzen (19) im unteren Bereich der Elektrolyseplatte waagerecht durchgehend ausgebildet sind.
- Elektrolyseure aufgebaut auf Basis mindestens einer Elektrolyseplatte nach einem der Ansprüche 1 bis 6.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19956787 | 1999-11-25 | ||
DE19956787A DE19956787A1 (de) | 1999-11-25 | 1999-11-25 | Elektrolyseplatte |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1103636A1 true EP1103636A1 (de) | 2001-05-30 |
Family
ID=7930318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00124257A Withdrawn EP1103636A1 (de) | 1999-11-25 | 2000-11-13 | Elektrolyseplatte |
Country Status (6)
Country | Link |
---|---|
US (1) | US6395155B1 (de) |
EP (1) | EP1103636A1 (de) |
JP (1) | JP2001181881A (de) |
KR (1) | KR20010061947A (de) |
DE (1) | DE19956787A1 (de) |
PL (1) | PL344075A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006127633A2 (en) * | 2005-05-20 | 2006-11-30 | Electrolyzer Corp. | Acidic electrolyzed water production system and protection membrane |
EP3819259A1 (de) | 2019-11-06 | 2021-05-12 | Covestro Deutschland AG | Verfahren zur isocyanat- und polyurethan-herstellung mit verbesserter nachhaltigkeit |
EP4039638A1 (de) | 2021-02-03 | 2022-08-10 | Covestro Deutschland AG | Verfahren zur herstellung von kohlenmonoxid als rohstoff zur isocyanatherstellung mit verringertem co2 fussabdruck |
EP4234491A1 (de) | 2022-02-24 | 2023-08-30 | Covestro Deutschland AG | Verfahren zur gasifikation polymerer wertstoffmaterialien für die emissionsarme bereitstellung von für die herstellung von phosgen nutzbarem kohlenmonoxid |
EP4310224A1 (de) | 2022-07-19 | 2024-01-24 | Covestro Deutschland AG | Nachhaltige herstellung organischer aminoverbindungen für die produktion organischer isocyanate |
EP4345094A1 (de) | 2022-09-30 | 2024-04-03 | Covestro Deutschland AG | Verfahren zur phosgen-herstellung mit rückführung von kohlendioxid aus wertstoffrecycling |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8585999B2 (en) * | 2002-06-04 | 2013-11-19 | Prochemtech International, Inc. | Method of making flow-through-resin-impregnated monolithic graphite electrode and containerless electrolytic cell comprising same |
US20030221971A1 (en) * | 2002-06-04 | 2003-12-04 | Keister Timothy Edward | Method for electrolytic production of hypobromite for use as a biocide |
US7927470B2 (en) * | 2002-06-04 | 2011-04-19 | Prochemtech International, Inc. | Flow-through-resin-impregnated monolithic graphite electrode and containerless electrolytic cell comprising same |
KR100701874B1 (ko) * | 2005-03-04 | 2007-03-30 | 한국원자력연구소 | 전해액의 독립적 직렬 흐름 유로를 갖는 셀 적층형 단극식격막 전해장치 |
US8317985B2 (en) | 2006-11-19 | 2012-11-27 | Wood Stone Corporation | Hydrogen producing unit |
CN101814605B (zh) * | 2010-03-19 | 2012-07-25 | 清华大学 | 一种含氟树脂的导电塑料双极板制备方法 |
US9051657B2 (en) | 2012-07-16 | 2015-06-09 | Wood Stone Corporation | Modular electrolysis unit |
DE102014010813A1 (de) * | 2014-07-23 | 2016-01-28 | Etogas Gmbh | Rahmen für eine Elektrolysevorrichtung, Elektrolysezellen-Modul und Elektrolysevorrichtung |
DE102014010812A1 (de) * | 2014-07-23 | 2016-01-28 | Etogas Gmbh | Rahmen für eine Elektrolysevorrichtung, Elektrolysezellen-Modul und Elektrolysevorrichtung |
CL2016001108A1 (es) * | 2016-05-09 | 2017-03-10 | Pl Copper Spa | Revestimiento solido para ánodos de electro obtención el cual posee partes laterales, inferiores y superior frontal para cubrir e impedir la conductividad de los bordes del ánodo y además comprende partes laterales e inferiores accesorias que mantienen un espaciamiento entre los ánodos y cátodos. |
DE102022101801A1 (de) | 2021-02-15 | 2022-08-18 | Schaeffler Technologies AG & Co. KG | Elektrolyseplatte für die Wasserstoffherstellung und Verfahren zur Herstellung einer Elektrolyseplatte |
WO2022171237A1 (de) | 2021-02-15 | 2022-08-18 | Schaeffler Technologies AG & Co. KG | Elektrolyseplatte für die wasserstoffherstellung und verfahren zur herstellung einer elektrolyseplatte |
EP4355930A1 (de) | 2021-06-16 | 2024-04-24 | Schaeffler Technologies AG & Co. KG | Elektrodenplatte für eine elektrolyse-anlage |
DE102022112593A1 (de) | 2021-06-16 | 2022-12-22 | Schaeffler Technologies AG & Co. KG | Elektrodenplatte für ein Elektrolysesystem |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4233146A (en) * | 1979-03-09 | 1980-11-11 | Allied Chemical Corporation | Cell flow distributors |
EP0051764A1 (de) * | 1980-11-06 | 1982-05-19 | Bayer Ag | Salzsäure-Elektrolysezelle zur Herstellung von Chlor und Wasserstoff |
EP0266948A1 (de) * | 1986-11-07 | 1988-05-11 | Imperial Chemical Industries Plc | Elektrolytische Zelle |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3915836A (en) * | 1973-04-06 | 1975-10-28 | Bayer Ag | HCl electrolysis frame with a graphite plate arranged therein |
DE2503215C2 (de) * | 1975-01-27 | 1986-08-07 | Keramchemie GmbH, 5433 Siershahn | Vorrichtung zur Elektrolyse von Salzsäure |
DE2816152C2 (de) * | 1978-04-14 | 1980-07-03 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Chlor aus Salzsäure durch Elektrolyse und Salzsäure-Elektrolysezelle |
DE2908269C2 (de) * | 1979-03-02 | 1984-04-26 | Uhde Gmbh, 4600 Dortmund | Salzsäure-Elektrolysezelle |
IT1283628B1 (it) * | 1996-05-07 | 1998-04-23 | De Nora Spa | Tipo migliorato di lastra bipolare per elettrolizzatori |
US6066248A (en) * | 1998-10-27 | 2000-05-23 | E. I. Du Pont De Nemours And Company | Process for aqueous HCl electrolysis with thin film electrodes |
-
1999
- 1999-11-25 DE DE19956787A patent/DE19956787A1/de not_active Withdrawn
-
2000
- 2000-11-13 EP EP00124257A patent/EP1103636A1/de not_active Withdrawn
- 2000-11-16 US US09/714,718 patent/US6395155B1/en not_active Expired - Fee Related
- 2000-11-17 JP JP2000350831A patent/JP2001181881A/ja active Pending
- 2000-11-23 PL PL00344075A patent/PL344075A1/xx unknown
- 2000-11-24 KR KR1020000070236A patent/KR20010061947A/ko not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4233146A (en) * | 1979-03-09 | 1980-11-11 | Allied Chemical Corporation | Cell flow distributors |
EP0051764A1 (de) * | 1980-11-06 | 1982-05-19 | Bayer Ag | Salzsäure-Elektrolysezelle zur Herstellung von Chlor und Wasserstoff |
EP0266948A1 (de) * | 1986-11-07 | 1988-05-11 | Imperial Chemical Industries Plc | Elektrolytische Zelle |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006127633A2 (en) * | 2005-05-20 | 2006-11-30 | Electrolyzer Corp. | Acidic electrolyzed water production system and protection membrane |
WO2006127633A3 (en) * | 2005-05-20 | 2007-01-18 | Electrolyzer Corp | Acidic electrolyzed water production system and protection membrane |
US8858765B2 (en) | 2005-05-20 | 2014-10-14 | Ecolab Usa Inc. | Acidic electrolyzed water production system and generation control method |
EP3819259A1 (de) | 2019-11-06 | 2021-05-12 | Covestro Deutschland AG | Verfahren zur isocyanat- und polyurethan-herstellung mit verbesserter nachhaltigkeit |
WO2021089737A1 (de) | 2019-11-06 | 2021-05-14 | Covestro Intellectual Property Gmbh & Co. Kg | Verfahren zur isocyanat- und polyurethan-herstellung mit verbesserter nachhaltigkeit |
EP4039638A1 (de) | 2021-02-03 | 2022-08-10 | Covestro Deutschland AG | Verfahren zur herstellung von kohlenmonoxid als rohstoff zur isocyanatherstellung mit verringertem co2 fussabdruck |
WO2022167387A1 (de) | 2021-02-03 | 2022-08-11 | Covestro Deutschland Ag | Verfahren zur herstellung von kohlenmonoxid als rohstoff zur isocyanatherstellung mit verringertem co2 fussabdruck |
EP4234491A1 (de) | 2022-02-24 | 2023-08-30 | Covestro Deutschland AG | Verfahren zur gasifikation polymerer wertstoffmaterialien für die emissionsarme bereitstellung von für die herstellung von phosgen nutzbarem kohlenmonoxid |
WO2023161302A1 (de) | 2022-02-24 | 2023-08-31 | Covestro Deutschland Ag | Verfahren zur gasifikation polymerer wertstoffmaterialien für die emissionsarme bereitstellung von für die herstellung von phosgen nutzbarem kohlenmonoxid |
EP4310224A1 (de) | 2022-07-19 | 2024-01-24 | Covestro Deutschland AG | Nachhaltige herstellung organischer aminoverbindungen für die produktion organischer isocyanate |
WO2024017890A2 (de) | 2022-07-19 | 2024-01-25 | Covestro Deutschland Ag | Nachhaltige herstellung organischer aminoverbindungen für die produktion organischer isocyanate |
EP4345094A1 (de) | 2022-09-30 | 2024-04-03 | Covestro Deutschland AG | Verfahren zur phosgen-herstellung mit rückführung von kohlendioxid aus wertstoffrecycling |
WO2024068685A1 (de) | 2022-09-30 | 2024-04-04 | Covestro Deutschland Ag | Verfahren zur phosgen-herstellung mit rückführung von kohlendioxid aus wertstoffrecycling |
Also Published As
Publication number | Publication date |
---|---|
KR20010061947A (ko) | 2001-07-07 |
JP2001181881A (ja) | 2001-07-03 |
PL344075A1 (en) | 2001-06-04 |
US6395155B1 (en) | 2002-05-28 |
DE19956787A1 (de) | 2001-05-31 |
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