EP4587613A2 - Détection et prévention de formation de dépôts dans une installation d'électrolyse de l'eau et procédé associé - Google Patents

Détection et prévention de formation de dépôts dans une installation d'électrolyse de l'eau et procédé associé

Info

Publication number
EP4587613A2
EP4587613A2 EP23769260.3A EP23769260A EP4587613A2 EP 4587613 A2 EP4587613 A2 EP 4587613A2 EP 23769260 A EP23769260 A EP 23769260A EP 4587613 A2 EP4587613 A2 EP 4587613A2
Authority
EP
European Patent Office
Prior art keywords
installation
fluid
sensing region
stack device
sensor
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.)
Pending
Application number
EP23769260.3A
Other languages
German (de)
English (en)
Inventor
Nicolas DUBOUIS
David Ayme-Perrot
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.)
TotalEnergies Onetech SAS
Original Assignee
TotalEnergies Onetech SAS
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 TotalEnergies Onetech SAS filed Critical TotalEnergies Onetech SAS
Publication of EP4587613A2 publication Critical patent/EP4587613A2/fr
Pending legal-status Critical Current

Links

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
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • 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
    • C25B15/02—Process control or regulation
    • C25B15/023—Measuring, analysing or testing during electrolytic production
    • C25B15/025—Measuring, analysing or testing during electrolytic production of electrolyte parameters
    • 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
    • C25B15/02—Process control or regulation
    • C25B15/023—Measuring, analysing or testing during electrolytic production
    • C25B15/025—Measuring, analysing or testing during electrolytic production of electrolyte parameters
    • C25B15/027—Temperature
    • 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
    • C25B15/085—Removing impurities
    • 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
    • C25B15/087—Recycling of electrolyte to electrochemical 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
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/083—Separating products
    • 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
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Definitions

  • an electrochemical stack device comprising at least a stack having at least two electrodes immersed in an electrolyte and having optionally one or more separator separating the two electrodes;
  • the subject matter of the invention is a water electrolysis installation of the above mentioned type, characterized in that the sensing region of the optical fiber probe is located inside the inner fluid handling volume of the balance of plant outside of the electrochemical stack device.
  • the installation according to the invention may comprise one or more of the following feature(s), taken alone, or according to any technical feasible combination:
  • a sensing region of at least one sensor is placed inside a pipe of the balance of plant;
  • the sensing region is placed along a wall of the fluid handling component
  • the at least one sensor comprises at least two optical fiber probes, at least one optical fiber probe having its sensing region placed along a wall of the fluid handling component and at least one optical fiber probe having its sensing region protruding from the wall in a direction transverse to the wall local surface;
  • one fluid handling component is a gas/liquid separator or a liquid/liquid separator, at least one sensor being placed inside the gas/liquid separator or liquid/liquid separator;
  • the at least one handling component is a gas/liquid separator connected to an outlet of the electrochemical stack device, to receive an outcoming fluid comprising gas and liquid from the electrochemical stack device;
  • one fluid handling component is a fluid tank, at least one sensor being placed inside the fluid tank;
  • the fluid tank is an electrolyte tank, connected to an inlet of the electrochemical stack device to convey electrolyte to the electrochemical stack device;
  • one fluid handling component is a fluid filter, at least one sensor being placed inside the filter;
  • the filter is a lye filter interposed between the electrolyte tank and the electrochemical stack device;
  • the information representative of sludge formation is a fluid turbidity within the measured fluid.
  • FIG. 2 is a schematic representation of a second water electrolysis installation according to the invention.
  • a first water electrolysis installation 10 according to the invention is schematically shown in figure 1.
  • the installation 10 is connected to an electric source 12 and to a water source 14 for the production of dihydrogen 16 and dioxygen 18.
  • the water electrolysis installation 10 is carrying out alkaline water electrolysis.
  • another water electrolysis installation 1 10 is represented and will be described later on.
  • the electric source 12 is for example a renewable energy source, such as a solar farm, a tidal farm or a wind farm, or is a battery system, a power grid or any device supplying electricity.
  • the installation 10 comprises at least a sensor 30 measuring an information representative of a sludge formation, to detect the formation of sludge resulting for example from a degradation occurring in the water electrolysis installation 10.
  • Sludge formation may result from delamination of electrodes in the electrochemical stack device 20, from material dissolution leading to undesired precipitations and/or from fluid aging within the electrochemical stack device 20 or the inner fluid handling volume 24 of the balance of plant 22. Sludge formation may also result from a contamination from the ambient atmosphere, for example CO2 absorption.
  • each sensor 30 measures information inside the inner fluid handling volume 24 of the balance of plant 22.
  • Each cell comprises at least two electrodes immersed in an electrolyte.
  • the two electrodes may be separated by one or more separator.
  • the cells are for example arranged in rows defining the stack.
  • the enclosure receives a supply of electricity from the electric source 12 and also receives incoming fluid 26, in particular a water-based electrolyte, the electricity and incoming fluid 26 being split among the stacks.
  • the fluids are for example supply water, electrolyte, water containing dihydrogen, or water containing dioxygen.
  • the balance of plant 22 also comprises a downstream dihydrogen 16 treatment stage and/or a dioxygen 18 treatment stage that are not represented in figure 1 .
  • the upstream circuit 36 comprises pipes 32 and other fluid handling components connecting the water source 14 to the incoming fluid 26 inlet of the electrochemical stack device 20.
  • the first recycle water pipe 32H is connected to the water supply pipe 32A at the tapping 33.
  • the second recycle water pipe 32J is connected to the water supply pipe 32A at the tapping 33.
  • At least a sensor 30 is for example placed in the first recycle water pipe 32H or/and in the second recycle water pipe 32J.
  • the sensors 30 are each measuring information about the formation of sludge.
  • the information representative of sludge formation advantageously comprises the detection of a fluid turbidity within the measured fluid.
  • the measurement is carried out directly in the fluid circulating in the fluid handling volume 24 of the balance of plant 22, inside the pipes 32 and/or inside the other fluid handling components.
  • the optical fiber probe 50 comprises a coating separating the inside of the optical fiber probe 50 from the measured fluid at which the optical fiber probe 50 is gathering information of the sludge formation.
  • the optical fiber probe 50 is cylindrical and oblong, defining a local axis A-A’ for the sensing region 52.
  • the sensing region 52 of the optical fiber probe 50 is for example applied along a wall 54 of the pipe 32, the local axis A-A’ of the sensing region 52 being substantially parallel to a local axis B-B’ of the wall 54 (which here corresponds to the local axis B-B’ of a pipe 32) at the location receiving the sensing region 52.
  • the sensing region 52 of the optical fiber probe 50 is placed protruding from the wall 54.
  • the local axis A-A’ of the sensing region 52 is inclined or orthogonal to the local axis B-B’ of the wall 54 at the location receiving the sensing region 52.
  • the sludge is placed advantageously at the bottom of the tank and/or separator and/or filter, immerged in the fluid, where the formation of sludge is most at risk to happen.
  • the sensing regions 52 of the sensors 30 are placed at a distance of the electrodes of the electrochemical stack device 20 greater than 10 cm, in, particular greater than 1 m.
  • the sensor 30 further comprises a processing apparatus 56 to collect the output light, and process the signals in order to identify the amount of sludge in the vicinity of the sensor 30.
  • the processing apparatus 56 comprises at least a processor and a memory comprising software modules able to be processed by the processor.
  • the electrolyte is conducted through the electrolyte supply pipe 32C to the electrolyte filter 46 before reaching the supply pipe 32D forming the incoming fluid 26 that is conveyed to the electrochemical stack device 20.
  • An electrical current is simultaneously supplied to the electrochemical stack device 20 and electrochemical reactions, as described above, occur within the stacks of cells of the electrochemical stack device 20 to convert the incoming fluid 26 into outcoming fluids 28A, 28B.
  • the upstream circuit 36 is here without an electrolyte tank 44 and without an electrolyte filter 46.
  • the installation 110 further comprises additional fluid handling components which are polishing resins 162A to 162C.
  • the fluid passes through the polishing resin 162A to 162C to capture the metallic ions dissolved inside the fluid.
  • a first polishing resin 162A is advantageously placed on the supply pipe 32A, downstream of the water source 14 and upstream of the dioxygen separator 42.
  • a second polishing resin 162B is placed on the recycle pipe 32J, downstream of the dioxygen separator and upstream of the tapping 33.
  • a third polishing resin 162C is interposed between the electrolyte supply pipe 32C and the incoming fluid supply pipe 32D upstream of the electrochemical stack device 20.
  • the downstream circuit 38 of the second water electrolysis installation 1 10 has a structure similar to the downstream circuit 38 of the first installation 10.
  • sensors 30 are placed in separators 40, 42 and in pipes 32C, 32D, 32H and/or 32J (downstream of the polishing resin 162B).
  • An additional sensor 30 is advantageously placed in the recycle pipe 32J, upstream of the polishing resin 162B.
  • polishing resins 162A to 162C limits the chemical degradation of the proton exchange membrane by preventing the metallic impurities to get trapped by the membrane.
  • the water electrolysis installation 10, 1 10 is very safe. Indeed, the sludge formation is monitored in all fluids supplied to the electrochemical stack device 20 or recovered from the electrochemical stack device 20.
  • Having a sensing region 52 of a sensor 30 inside a pipe 32 or in another fluid handling component allow the monitoring of specific regions 48 where the formation of sludge is critical for the operation of the installation 10.
  • Some fluid handling components are subject to the formation of sludge and monitoring them facilitates the scheduling of maintenance and cleaning interventions.
  • the senor 30 does not comprises an additional pressure sensor 58 and/or an additional temperature sensor 60 in the vicinity of the sensing region 52. The temperature and/or pressure can then be obtained, if necessary, from information taken by the sensing region 52.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

L'invention concerne une installation d'électrolyse de l'eau (10 ; 110), comprenant : - un dispositif à empilement électrochimique (20) comprenant au moins un empilement ayant au moins deux électrodes immergées dans un électrolyte ; - des équipements auxiliaires (22) définissant un volume de gestion de fluide interne (24) des équipements auxiliaires (22) pour transporter un fluide entrant (26) vers le dispositif à empilement électrochimique (20) et pour récupérer un fluide sortant (28A, 28B) à partir du dispositif à empilement électrochimique (20) ; au moins un capteur (30) comprenant au moins une sonde à fibre optique (50) ayant une région de détection (52), la région de détection (52) mesurant au moins une information représentative de la formation de dépôts à proximité du capteur (30) ; l'invention étant caractérisée en ce que la région de détection (52) de la sonde à fibre optique (50) est située à l'intérieur du volume de gestion de fluide interne (24) des équipements auxiliaires (22) à l'extérieur du dispositif à empilement électrochimique (20).
EP23769260.3A 2022-09-16 2023-09-14 Détection et prévention de formation de dépôts dans une installation d'électrolyse de l'eau et procédé associé Pending EP4587613A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22306364.5A EP4339329A1 (fr) 2022-09-16 2022-09-16 Détection et prévention de formation de boue dans une installation d'électrolyse de l'eau et procédé associé
PCT/EP2023/075329 WO2024056814A2 (fr) 2022-09-16 2023-09-14 Détection et prévention de formation de dépôts dans une installation d'électrolyse de l'eau et procédé associé

Publications (1)

Publication Number Publication Date
EP4587613A2 true EP4587613A2 (fr) 2025-07-23

Family

ID=83594171

Family Applications (2)

Application Number Title Priority Date Filing Date
EP22306364.5A Withdrawn EP4339329A1 (fr) 2022-09-16 2022-09-16 Détection et prévention de formation de boue dans une installation d'électrolyse de l'eau et procédé associé
EP23769260.3A Pending EP4587613A2 (fr) 2022-09-16 2023-09-14 Détection et prévention de formation de dépôts dans une installation d'électrolyse de l'eau et procédé associé

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP22306364.5A Withdrawn EP4339329A1 (fr) 2022-09-16 2022-09-16 Détection et prévention de formation de boue dans une installation d'électrolyse de l'eau et procédé associé

Country Status (8)

Country Link
US (1) US20260092378A1 (fr)
EP (2) EP4339329A1 (fr)
CN (1) CN120225728A (fr)
AR (1) AR130507A1 (fr)
AU (1) AU2023342552A1 (fr)
CA (1) CA3267904A1 (fr)
CL (1) CL2025000766A1 (fr)
WO (1) WO2024056814A2 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8703139A (nl) * 1987-12-28 1989-07-17 Gerardus Johannes Jozef Beukev Detectorcel voor het met behulp van licht identificeren en kwantificeren van stoffen, en analyse-inrichting voorzien van een dergelijke detectorcel.
US5647986A (en) * 1994-12-02 1997-07-15 Nawathe; Dilip Apparatus and process for distributed treatment of wastewater
JP5412749B2 (ja) * 2008-05-16 2014-02-12 横河電機株式会社 透過散乱形濁度計
US20170057833A1 (en) * 2015-09-01 2017-03-02 Xylem IP Holdings LLC. Recirculating type active substance treatment system
CN110068538A (zh) * 2019-06-10 2019-07-30 皖西学院 北斗定位智能水质检测机器人
WO2021209961A1 (fr) * 2020-04-17 2021-10-21 Zoran Djinovic Bloc-batterie comprenant des éléments de batterie et un système de détection à fibre optique pour la surveillance in situ desdits éléments de batterie
CN112054254B (zh) 2020-08-18 2022-02-18 暨南大学 电池光纤原位检测系统及方法

Also Published As

Publication number Publication date
WO2024056814A2 (fr) 2024-03-21
WO2024056814A3 (fr) 2024-06-13
AR130507A1 (es) 2024-12-11
CL2025000766A1 (es) 2025-07-11
CN120225728A (zh) 2025-06-27
EP4339329A1 (fr) 2024-03-20
US20260092378A1 (en) 2026-04-02
AU2023342552A1 (en) 2025-04-03
CA3267904A1 (fr) 2024-03-21

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