EP1028179A1 - Electrolyseur avec vidange partielle de l'électrolyte - Google Patents

Electrolyseur avec vidange partielle de l'électrolyte Download PDF

Info

Publication number
EP1028179A1
EP1028179A1 EP00102682A EP00102682A EP1028179A1 EP 1028179 A1 EP1028179 A1 EP 1028179A1 EP 00102682 A EP00102682 A EP 00102682A EP 00102682 A EP00102682 A EP 00102682A EP 1028179 A1 EP1028179 A1 EP 1028179A1
Authority
EP
European Patent Office
Prior art keywords
electrolyte
electrolyzer
supply
main channel
electrolyser
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Withdrawn
Application number
EP00102682A
Other languages
German (de)
English (en)
Inventor
Heinz Prof. Dr. Barthels
Hans-Günter Dr. Groehn
Jürgen Mergel
Wolfgang Westerhausen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Forschungszentrum Juelich GmbH
Original Assignee
Forschungszentrum Juelich GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Forschungszentrum Juelich GmbH filed Critical Forschungszentrum Juelich GmbH
Publication of EP1028179A1 publication Critical patent/EP1028179A1/fr
Withdrawn legal-status Critical Current

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
    • C25B15/00—Operating or servicing cells
    • C25B15/06—Detection or inhibition of short circuits in the cell
    • 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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/036—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
    • C25B9/75—Assemblies comprising two or more cells of the filter-press type having bipolar electrodes

Definitions

  • the invention relates to an electrolyzer.
  • An electrolyser usually has a variety of electrolysis cells (cells) connected in series on how to find the document DE 196 07 235 C1 is.
  • the cells are activated via one or more channels Operating materials (electrolyte) supplied.
  • Operating materials electrolyte supplied from the canals, hereinafter also called main channels, branch lines starting in the following supply lines or supply channels to be named.
  • the supply lines lead to the individual cells or to the electrode rooms.
  • a single cell of an electrolyser consists of two electrodes and a diaphragm in between.
  • a room with an electrode in it is called electrode space in the following.
  • the resource such as water, becomes an electrolyte added (regularly: KOH) to the electrodes and broken down into its components (product gases).
  • product gases In particular, hydrogen and oxygen are generated.
  • the gases produced are initially, for example, in Gas separator and from here to a storage for Hydrogen (hydrogen tank, hydride storage element) forwarded using pressure.
  • the electrolyzer has means of interruption and restore through the electrical Conductivity of the electrolyte caused electrical Connection between the cells of the electrolyser on. Slides (bolts) or Air bubbles introduced into the connecting channels and which interrupt the electrolyte connections, suggested.
  • the one located in the electrolyzer Electrolyte partially empty for standstill see above that the electrolyte remains in the electrolytic cells and the main channel and / or the supply channels at least are partially empty.
  • partial emptying is to be understood that part of the electrolyte from the Electrolyser removed and in particular a storage container is fed. This part is special dimensioned so that the one in the electrolyser Main channel - especially the sections between branching Supply channels - free of electrolytes are.
  • At the electrolyzer for easy implementation of the process is at least one main channel and / or one Supply channel at least partially above the electrolysis cells arranged. So far a main channel only partially arranged above electrolysis cells is, the sections of the main channel are the two electrolytic cells with each other by means of supply lines connect, affected by the sophisticated arrangement.
  • the supply lines lead advantageously sideways, especially from below into the respective Electrolytic cell.
  • the supply lines are not on the shortest Walk a main channel with an electrolytic cell connect.
  • the electrical resistance that one has over the Overcoming electrolytes flowing electrical current must be comparatively longer due to the provision Supply lines made. This will Parasitic currents also flow during operation of the electrolyzer is reduced. The efficiency is like this compared to the prior art mentioned at the beginning improved.
  • the supply lines open into electrolysis cells from above and corresponds to the length of one Supply line of the length that is required to the shortest way from the main channel to the side or below in to open an electrolytic cell, the same Effect achieved (increase in electrical resistance). So it is an equivalent Embodiment.
  • the device comprises an electrolyzer, which operates at pressures above 60 bar becomes.
  • pressures above 120 bar provided. 200 bar are preferably not exceeded.
  • the gases are then used to store hydrogen - for example, to a tank.
  • a structural design of the electrolyzer comprises a valve which starts at a predetermined pressure, so z. B. opens from 60, preferably from 120 bar.
  • the electrolyser is in a pressure-resistant housing housed. Will be inside the electrolyser the corresponding pressure is reached, this opens Valve automatically, and the gases flow under high Pressure in the tank via the connected lines.
  • the electrolyzer is pressurized and the gases from 60 bar preferably from 120 bar Tank supplied. In one embodiment of the process are not exceeded 200 bar.
  • the volumes of the gas separators are kept very small. Due to the high pressures, the gas separators contain a large amount of gas in the present invention. Around It is in the present invention to minimize losses required to reduce the volumes accordingly. A small or very small volume of gas volume in the gas separator in the sense of the invention is less than 0.1% of the gas volume produced every hour. At the State of the art gas separators are provided which contain at least twice the gas volume. The measures and effects that affect the designs operating at high pressure regardless of the other claims mentioned Measures and their effects carried out or achieved become.
  • Figure 1 shows a longitudinal and a cross section through an electrolyser. This has two main channels 1 through which the electrolyte enters the electrolyzer. Supply channels branch from each main channel 1 2 from. The main channels are above an electrolytic cell 3 arranged. The supply channels 2 open from below in the electrolytic cell 3.
  • Product gases are generated via gas cross-channels 4 passed into gas longitudinal channels 5. Via the gas longitudinal channels the gases are led out of the electrolyser. You will particularly find gas separators forwarded. From here they are, for example, in Tanks filled.
  • FIG 2 is a system with an electrolyzer outlines with which the electrolyzer is partially emptied can be.
  • the system includes a storage container E for the electrolyte, an inert gas supply I (nitrogen supply) and various valves V.
  • the main channels for the electrolyte supply are arranged above the electrolytic cells. she are free of electrolyte after partial emptying.
  • the inert gas pressure is higher than that for overcoming the height difference between the electrolyzer and the gas separator G1 and G2 to set the required pressure difference.
  • To drain the electrolyte are the Valves VG1 and VG2 closed, valves VI 1, VI 2, VE 1 and VE 2 are opened. By gravity the electrolyte flows into the electrolyte reservoir.
  • valves VI 1 and VI 2 are closed and the valves VG 1 and VG 2 opened. Under the pressure of the inert gas, the electrolyte from the Storage container pressed into the gas separator. At Reaching the intended level in the gas separators the valves VE 1 and VE 2 are closed.
  • the partial emptying of the Electrolysers the flow of electricity across the electrolyte from the anode to the cathode of the electrolytic cells. This reduces maintenance protective energy required for electrode activity. Only as much is drained as to bring it about the desired effect is required. The required This minimizes labor and time.

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)
EP00102682A 1999-02-11 2000-02-09 Electrolyseur avec vidange partielle de l'électrolyte Withdrawn EP1028179A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19905565 1999-02-11
DE19905565A DE19905565A1 (de) 1999-02-11 1999-02-11 Elektrolyseur mit Teilentleerung des Elektrolyten

Publications (1)

Publication Number Publication Date
EP1028179A1 true EP1028179A1 (fr) 2000-08-16

Family

ID=7897078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00102682A Withdrawn EP1028179A1 (fr) 1999-02-11 2000-02-09 Electrolyseur avec vidange partielle de l'électrolyte

Country Status (2)

Country Link
EP (1) EP1028179A1 (fr)
DE (1) DE19905565A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020206341A1 (de) 2020-05-20 2021-11-25 Siemens Aktiengesellschaft Korrosionsschutz in einem CO2-Elektrolyse-Stack

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH108697A (de) * 1923-12-22 1925-02-02 Pressly Scott John Elektrolytischer Apparat zur Gaserzeugung.
EP0212240A1 (fr) * 1985-07-17 1987-03-04 Metkon S.A. Dispositif pour l'électrolyse de solutions
US5795450A (en) * 1997-03-04 1998-08-18 Shinko Pantec Co., Ltd. Apparatus for producing hydrogen and oxygen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19637656C2 (de) * 1996-09-16 1999-02-25 Forschungszentrum Juelich Gmbh Elektrolyseur, bei dem keine stillstandsbedingten Leistungsverluste auftreten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH108697A (de) * 1923-12-22 1925-02-02 Pressly Scott John Elektrolytischer Apparat zur Gaserzeugung.
EP0212240A1 (fr) * 1985-07-17 1987-03-04 Metkon S.A. Dispositif pour l'électrolyse de solutions
US5795450A (en) * 1997-03-04 1998-08-18 Shinko Pantec Co., Ltd. Apparatus for producing hydrogen and oxygen

Also Published As

Publication number Publication date
DE19905565A1 (de) 2000-08-17

Similar Documents

Publication Publication Date Title
DE60001321T3 (de) Wasserstoffbrennstoff-nachfüllmethode und -system
EP3489394A1 (fr) Électrolyseur pour électrolyse pem à basse pression
DE102012205732B4 (de) Verfahren zum Betreiben eines Wasserelektrolyse-Systems
DE2745033C2 (de) Chlor-Akkumulator
EP0985240A1 (fr) Systeme de pile a combustible
EP0718904A1 (fr) Système de piles à combustible
WO2014040746A1 (fr) Procédé et système de conduite d'un électrolyseur
DE102007052148A1 (de) Verfahren zum Vermeiden von gasförmigen Verunreinigungseinschlüssen in mindestens einem Gasraum einer Brennstoffzelle während einer Stillstandszeit und Brennstoffzelle mit Mitteln zur Durchführung des Verfahrens
DE102005004426A1 (de) Brennstoffzellensystem mit Druckluftbetrieb
DE102019217219A1 (de) Zellanordnung zur Erzeugung und Verdichtung von Wasserstoff
EP3828313A1 (fr) Système d'électrolyse pour décomposer l'eau en hydrogène et oxygène et procédé de fonctionnement du système d'électrolyse
EP1338068B1 (fr) Dispositif d'alimentation en courant continu et procede de mise hors-circuit d'un bloc de piles a combustible
DE2044068A1 (de) Brennstoffbatterie
EP1303028B1 (fr) Système pour alimenter un générateur en hydrogène
EP1028179A1 (fr) Electrolyseur avec vidange partielle de l'électrolyte
DE102018213404A1 (de) Elektrolyseur und Verfahren zum Betreiben eines Elektrolyseurs
DE102009030358B4 (de) Brennstoffzellensystem und Verfahren zu dessen Betrieb sowie dessen Verwendung
EP2141264B1 (fr) Dispositif destiné à produire un mélange d'oxygène/hydrogène
DE102022109043A1 (de) Vorrichtung zur Aufbereitung einer Elektrolytflüssigkeit
DE102018219373A1 (de) Elektrolyseeinrichtung und Verfahren zum Betreiben einer Elektrolyseeinrichtung
EP4043615A1 (fr) Installation d'électrolyse
DE1596230A1 (de) Zelle zur Speicherung elektrischer Energie durch Elektrolyse von Wasser und Rueckgewinnung derselben durch elektrochemische Umsetzung des gebildeten Wasserstoffs und Sauerstoffs
DE102014103554A1 (de) Verfahren und Vorrichtung zur Gewinnung von Stickstoff aus Luft
DE19745773C2 (de) Verfahren zum Betreiben einer Brennstoffzelle mit Entgasungseinrichtung
DE19615881C2 (de) Miniaturmodell einer Elektrolyse-/Brennstoffzellenanlage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010126

AKX Designation fees paid

Free format text: CH DE FR GB LI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FORSCHUNGSZENTRUM JUELICH GMBH

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20030803