EP4288588A1 - Procédé de traitement de fluides de processus et dispositif de filtration pour la mise en oeuvre du procédé - Google Patents

Procédé de traitement de fluides de processus et dispositif de filtration pour la mise en oeuvre du procédé

Info

Publication number
EP4288588A1
EP4288588A1 EP22713623.1A EP22713623A EP4288588A1 EP 4288588 A1 EP4288588 A1 EP 4288588A1 EP 22713623 A EP22713623 A EP 22713623A EP 4288588 A1 EP4288588 A1 EP 4288588A1
Authority
EP
European Patent Office
Prior art keywords
fluid
filter device
storage tank
hydrogen
oxygen
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
EP22713623.1A
Other languages
German (de)
English (en)
Inventor
Sebastian König
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.)
Hydac International GmbH
Original Assignee
Hydac International 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 Hydac International GmbH filed Critical Hydac International GmbH
Publication of EP4288588A1 publication Critical patent/EP4288588A1/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
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/085—Removing impurities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0031—Degasification of liquids by filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • 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
    • C25B15/08—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
    • 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
    • C25B9/23—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
    • 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

  • the invention relates to a method for the treatment of process fluids as they arise when a process liquid is broken down into different process gases with the aid of electricity in an electrolytic cell, with at least one fluid circuit in which at least one of the process gases is contained in the process liquid with formation of the process fluid is present, with at least one fluid storage tank being present as part of the fluid circuit.
  • the invention further relates to a device for carrying out the method.
  • WO 2011/012507 A1 discloses a method and a device for generating hydrogen and oxygen, it being possible in particular to use excess electrical energy from wind turbines for this purpose.
  • the associated device for carrying out the process uses a reversible polymer electrolyte fuel cell (PEMFC) with a proton exchange membrane (PEM) as an electrolyzer.
  • PEMFC reversible polymer electrolyte fuel cell
  • PEM proton exchange membrane
  • Such a fuel cell can also be used to produce hydrogen on the one hand and oxygen on the other hand as the different process gases from water as the process liquid.
  • the fuel cell then works as a Electrolyser and must be supplied with electrical power, with several fuel cells can be combined as a fuel cell stack.
  • the electricity required for this can come from generators in wind turbines, for example.
  • the commonly used electrolysis devices in the form of electrolysis cells for generating hydrogen and oxygen are those that are usually operated at atmospheric pressure or as part of a pressure electrolysis.
  • the proton exchange membrane of the presented reversible fuel cell separates a negative side from a positive side.
  • water For the reaction to take place, water must be present as the process liquid on the positive side, with the relevant water supply being produced via an independent circuit.
  • the water used as the process liquid is actually pure water and is therefore free of any foreign substances as far as possible.
  • the amount of water that is required in the course of the recycling depends not only on the amount of water that is needed for the electrolysis reaction (the production of 1 kg of hydrogen usually requires 9 kg of water), but also on the cooling requirements of the Electrolytic cell or the electrolytic cell stack, since the process water also serves as a cooling medium for the electrolysis operation.
  • every PEM electrolysis regularly has a water circuit on the positive side or the oxygen side.
  • the oxygen generated as a process gas dissolves and mixes with water as the process liquid, which is routed in the associated supply circuit, to form a process fluid.
  • This will be more or less large Gas bubbles in the form of oxygen are entrained in the water cycle and the relevant water cycle is followed by a so-called gravity separator, which normally consists of a horizontal fluid storage tank that is large in size and into which the process fluid water with the dissolved oxygen flows.
  • the process gas oxygen is given sufficient time to outgas from the process fluid in the storage tank in order to recover pure water as the process liquid in this way. Due to the fact that large-volume, horizontally lying fluid storage tanks are used, a large fluid surface is created in the tank as the fluid level in order to give the process gas the opportunity to effectively outgas.
  • the object of the invention is to provide an improved method and device that help to facilitate the outgassing process of a process gas while at the same time keeping the process liquid clean for renewed use in electrolytic cell operation.
  • a task in this regard is solved by a method with the features of patent claim 1 and a filter device with the features of patent claim 6.
  • the method according to the invention is characterized in that at least one filter device is accommodated in the fluid storage tank, by means of which the process fluid is cleaned of any particle contamination and at the same time the dissolved process gas is separated from the process fluid while retaining the process liquid.
  • the process using the filter device ensures that even finely dispersed process gas in the process fluid can be released onto the gas side of the fluid storage tank, with small-volume gas bubbles merging to form larger gas bubbles due to surface tension, which means that the process fluid is discharged relieved. What remains on the liquid side of the fluid storage tank is the process liquid, which has been cleaned of any particle contamination by the filter device for a new extraction process in electrolysis cell operation.
  • the negative side or cathode side can also be run as part of a liquid circuit that is independent of the liquid circuit on the oxygen side. This enables more even cooling and the water can easily carry the hydrogen out of the electrolytic cell.
  • the method mentioned above can also be used in addition to the device for degassing process water on the hydrogen side of PEM electrolyzers.
  • the hydrogen in the form of gas bubbles, is in turn entrained in more or less dissolved form as a process fluid by the process water and brought into an independent fluid storage tank, where the hydrogen can now outgas by means of the filter device.
  • the filter device used to carry out the method according to the invention has a preferably replaceable filter element through which the process fluid can flow from the inside to the outside, the filter element being spaced apart while maintaining a definable radial distance and forming a fluid flow space is surrounded by a housing wall, which is designed as a discharge pipe, has a plurality of passage points, part of which is arranged below the variable fluid level in the fluid storage tank and the other part above this fluid level.
  • a housing wall which is designed as a discharge pipe
  • the degassing and cleaning process is controlled in such a way that the fluid level 28 in the fluid storage tank 22 only partially covers the filter device 24, so that the filter device 24 protrudes beyond the fluid level 28 by a definable axial length.
  • the hydrogen electrode is not run "dry” without its own fluid circuit, but is operated as a so-called wet electrode with its own liquid circuit, a corresponding after-treatment device can be connected to the hydrogen line 16, consisting of the components fluid storage tank 22 and filter device 24.
  • the respective process fluid therefore flows into the filter cavity 62 via the lower central opening 64 and then flows through the element material 46 of the filter element 44 from the inside to the outside entrained gas bubbles and reaches the interior of the tank 22 via the fluid flow space 60 after flowing through the window-like passage openings 38 ( Figure 2) or the hole-type perforation 40 ( Figure 3) of the associated housing wall 36, so that in this respect the cleaned process fluid can reach the Filtrate side of the filter device reaches and thus on the liquid side 31 of the fluid storage tank 22 with changing fluid level 28.
  • Gas bubbles collect at the respective passage opening 38, 40 in the housing wall 36, which, combined to form larger bubble packs, then rise on the outside of the housing wall 36 and reach the gas side 33 of the storage tank 22, with the possibility of discharge from the Tank 22 by means of the further outlet 30 on the gas side.
  • the cover part 34 must then be unscrewed from the tank 22 on its upper side 56. Ben and the unit shown in FIG. 3 can be removed from the tank 22 together with the cover part 34 . After separating the cover part 34 from the other parts of the filter device via the locking webs 54, the filter element 44 can be removed from the filter housing 32 via the upper discharge opening and exchanged for a new element. The filter device is then reinserted into the tank 22 in a correspondingly reversed sequence.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Filtration Of Liquid (AREA)
  • Gas Separation By Absorption (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

L'invention concerne un procédé de traitement de fluides de processus tels que ceux qui se forment lors de la décomposition d'un liquide de processus en gaz de processus différents l'un de l'autre à l'aide d'un courant électrique dans une cellule d'électrolyse (10), le procédé faisant intervenir au moins un circuit de fluide dans lequel au moins l'un des gaz de processus est présent sous forme contenue dans le liquide de processus avec formation du fluide de processus, au moins un réservoir de fluide (22) faisant partie du circuit de fluide. L'invention est caractérisée en ce que le réservoir de fluide (22) comprend au moins un dispositif de filtration (24) au moyen duquel le fluide de processus est nettoyé d'un éventuel encrassement par des particules et, dans le même temps, le gaz de processus contenu est séparé du fluide de processus par retenue du liquide de processus.
EP22713623.1A 2021-03-27 2022-03-09 Procédé de traitement de fluides de processus et dispositif de filtration pour la mise en oeuvre du procédé Pending EP4288588A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021001631.9A DE102021001631A1 (de) 2021-03-27 2021-03-27 Verfahren zur Behandlung von Prozessfluiden und Filtervorrichtung zum Durchführen des Verfahrens
PCT/EP2022/056041 WO2022207261A1 (fr) 2021-03-27 2022-03-09 Procédé de traitement de fluides de processus et dispositif de filtration pour la mise en oeuvre du procédé

Publications (1)

Publication Number Publication Date
EP4288588A1 true EP4288588A1 (fr) 2023-12-13

Family

ID=80978794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22713623.1A Pending EP4288588A1 (fr) 2021-03-27 2022-03-09 Procédé de traitement de fluides de processus et dispositif de filtration pour la mise en oeuvre du procédé

Country Status (9)

Country Link
US (1) US20240167180A1 (fr)
EP (1) EP4288588A1 (fr)
JP (1) JP2024514463A (fr)
KR (1) KR20230167054A (fr)
CN (1) CN117136254A (fr)
AU (1) AU2022249449A1 (fr)
CA (1) CA3213540A1 (fr)
DE (1) DE102021001631A1 (fr)
WO (1) WO2022207261A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022004171A1 (de) 2022-11-09 2024-05-16 Hydac Filtertechnik Gmbh Filter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009174043A (ja) 2007-12-27 2009-08-06 Toshigoro Sato 水電解ガス発生装置
KR100862923B1 (ko) * 2008-07-14 2008-10-13 황부성 수소산소 혼합가스 발생시스템
DE102009035440A1 (de) 2009-07-31 2011-02-03 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur Erzeugung von Wasserstoff und Sauerstoff
EP2484811A1 (fr) 2011-02-02 2012-08-08 Boo-Sung Hwang Système pour produire un mélange d'hydrogène et d'oxygène
DE102011053142B4 (de) 2011-08-31 2015-12-24 Kumatec Sondermaschinenbau & Kunststoffverarbeitung Gmbh Elektrolyseur und Elektrolyseur-Anordnung
DE102015004795A1 (de) * 2015-04-14 2016-10-20 Rt-Filtertechnik Gmbh Filtervorrichtung sowie Filterelement
FR3065467B1 (fr) * 2017-04-25 2019-07-19 Bulane Systeme de traitement de gaz d'hydrogene et/ou d'oxygene produit par electrolyse de l'eau servant a alimenter une combustion
CN210057076U (zh) * 2019-02-02 2020-02-14 张建国 可对排出氢气进行回流的电解水制氢制氧呼吸装置

Also Published As

Publication number Publication date
DE102021001631A1 (de) 2022-09-29
CA3213540A1 (en) 2022-10-06
CN117136254A (zh) 2023-11-28
JP2024514463A (ja) 2024-04-02
AU2022249449A1 (en) 2023-10-19
US20240167180A1 (en) 2024-05-23
KR20230167054A (ko) 2023-12-07
WO2022207261A1 (fr) 2022-10-06

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