The present invention relates to a solid oxide cell (SOC) system, comprising: an SOC including a fuel/steam electrode and an air electrode with an inlet for a dehumidifed process air stream and an outlet for an exhaust gas stream, a desiccant dehumidifier, an air recuperator, and an optional afterburner for the exhaust gas streams of the air electrode and the fuel/steam electrode; wherein the desiccant dehumidifier comprises a first inlet for a process air stream, a second inlet for a regeneration gas stream, a first outlet in fluid communication with the inlet of the air electrode, and a second outlet for an air exhaust stream, and is configured to dehumidify a process air stream entering the first inlet and to release a dehumidified process air stream via the first outlet; wherein the air recuperator is configured to exchange heat between the dehumidified process air stream exiting the desiccant dehumidifier and the exhaust gas stream exiting the air electrode or the exhaust gas stream exiting the optional afterburner, thereby providing a cooled exhaust gas stream; and wherein the second inlet of the desiccant dehumidifier is in fluid communication with the outlet of the air electrode, and the cooled exhaust gas stream is configured as regeneration gas stream entering the desiccant dehumidifier via second inlet at a temperature suitable for regeneration of the desiccant dehumidifier, or wherein the system further comprises an air blower configured to introduce ambient air, and a heat exchanger configured to exchange heat between the cooled exhaust gas stream and the ambient air, thereby providing heated ambient air stream which serves as the regeneration gas stream. The SOC system enables improved thermal management, energy efficiency and resistance towards cell degradation during electrolysis and/or fuel cell operation.
H01M 8/04014 - Échange de chaleur par des fluides gazeuxÉchange de chaleur par combustion des réactifs
C01B 3/04 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène par décomposition de composés inorganiques, p. ex. de l'ammoniac
H01M 8/04119 - Dispositions pour la commande des paramètres des réactifs, p. ex. de la pression ou de la concentration des réactifs gazeux avec apport simultané ou évacuation simultanée d’électrolyteHumidification ou déshumidification
H01M 8/0662 - Traitement des réactifs gazeux ou des résidus gazeux, p. ex. nettoyage
This invention relates a non-sintered green sheet or tape comprising a corrugated surface having alternating crests and troughs arranged along both a first direction of the surface and a second direction of the surface, the second direction forming an angle of between 60° to 120° to the first direction, wherein the corrugation periods and/or corrugation amplitudes in the first direction differ from those in the second direction. The invention enables preparation of a reliable, large-sized ceramic sheet material, e.g. as a ceramic electrolyte layer for use in solid oxide cells, as a ceramic sheet for filter or membrane applications, or as sintering substrate or setter. In addition, sintered ceramic sheets and electrolytes, methods of preparation, and solid oxide cells (SOCs) making use of the non-sintered green sheet or tape are described.
The present invention relates to a power converter system for a plurality of electrolysis cell stack units, comprising: a parallel arrangement of multiple DC/DC converter modules;
The present invention relates to a power converter system for a plurality of electrolysis cell stack units, comprising: a parallel arrangement of multiple DC/DC converter modules;
wherein each DC/DC converter module is configured to power a single electrolysis cell stack unit; and wherein each DC/DC converter module is capable of supplying the electrolysis cell stack unit with a predetermined variation of current, power and/or voltage such that near-thermoneutral operation at part load is enabled by matching the integral Joule heat production with the integral reaction heat consumption inside the electolysis cell stack unit, and/or wherein each DC/DC converter module is capable of reversing the current supplied to said electrolysis cell stack unit, causing said electrolysis cell stack unit to perform in fuel cell mode. The power converter system enables facilitated and inexpensive power distribution, long lifetime, as well as improved thermal management during operation of the electrolysis cell stacks. In further aspects, the invention relates to a power distribution system and electrolysis plant comprising said power converter system, as well as to related methods.
This invention relates to system for the production of ammonia synthesis gas, comprising: one or more electrically driven air separation unit(s) configured to separate nitrogen from air; and one or more solid oxide electrolysis cell(s) configured to produce hydrogen by solid oxide electrolysis of steam in thermoneutral or endothermal mode. By configuring the electrically driven air separation unit(s) and the solid oxide electrolysis cell(s) so that heat emanating from the one or more electrically driven air separation unit(s) is transferred to the one or more solid oxide electrolysis cell(s), nitrogen production may be integrated while enabling high current density, the use of large SOEC stacks and improved reactant conversion. In addition, ammonia production plants comprising the above system as well as related methods are described.
C25B 9/00 - Cellules ou assemblages de cellulesÉléments de structure des cellulesAssemblages d'éléments de structure, p. ex. assemblages d'électrode-diaphragmeCaractéristiques des cellules relatives aux procédés
B01D 53/32 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par effets électriques autres que ceux prévus au groupe
This invention relates a non-sintered green sheet or tape comprising a corrugated surface having alternating crests and troughs arranged along both a first direction of the surface and a second direction of the surface, the second direction forming an angle of between 60° to 120° to the first direction, wherein the corrugation periods and/or corrugation amplitudes in the first direction differ from those in the second direction. The invention enables preparation of a reliable, large-sized ceramic sheet material, e.g. as a ceramic electrolyte layer for use in solid oxide cells, as a ceramic sheet for filter or membrane applications, or as sintering substrate or setter. In addition, sintered ceramic sheets and electrolytes, methods of preparation, and solid oxide cells (SOCs) making use of the non- sintered green sheet or tape are described.
B28B 3/16 - Fabrication d'objets façonnés en utilisant des pressesPresses spécialement adaptées à ce travail dans laquelle un ou plusieurs cylindres exercent une pression sur le matériau avec des cylindres profilés synchronisés
B28B 11/08 - Appareillages ou procédés pour le traitement ou le travail des objets façonnés pour façonner des surfaces, p. ex. replanissage, bouchardage, gaufrage, rainurage
H01M 8/124 - Éléments à combustible avec électrolytes solides fonctionnant à haute température, p. ex. avec un électrolyte en ZrO2 stabilisé caractérisés par le procédé de fabrication ou par le matériau de l’électrolyte
6.
CORRUGATED GREEN SHEETS FOR THE PREPARATION OF LARGE-SIZED CERAMIC SHEETS AND RELATED METHODS AND USES
This invention relates a non-sintered green sheet or tape comprising a corrugated surface having alternating crests and troughs arranged along both a first direction of the surface and a second direction of the surface, the second direction forming an angle of between 60° to 120° to the first direction, wherein the corrugation periods and/or corrugation amplitudes in the first direction differ from those in the second direction. The invention enables preparation of a reliable, large-sized ceramic sheet material, e.g. as a ceramic electrolyte layer for use in solid oxide cells, as a ceramic sheet for filter or membrane applications, or as sintering substrate or setter. In addition, sintered ceramic sheets and electrolytes, methods of preparation, and solid oxide cells (SOCs) making use of the non- sintered green sheet or tape are described.
B28B 11/08 - Appareillages ou procédés pour le traitement ou le travail des objets façonnés pour façonner des surfaces, p. ex. replanissage, bouchardage, gaufrage, rainurage
H01M 8/124 - Éléments à combustible avec électrolytes solides fonctionnant à haute température, p. ex. avec un électrolyte en ZrO2 stabilisé caractérisés par le procédé de fabrication ou par le matériau de l’électrolyte
B28B 3/16 - Fabrication d'objets façonnés en utilisant des pressesPresses spécialement adaptées à ce travail dans laquelle un ou plusieurs cylindres exercent une pression sur le matériau avec des cylindres profilés synchronisés
The present invention relates to a power converter system for a plurality of electrolysis cell stack units, comprising: a parallel arrangement of multiple DC/DC converter modules; wherein each DC/DC converter module is configured to power a single electrolysis cell stack unit; and wherein each DC/DC converter module is capable of supplying the electrolysis cell stack unit with a predetermined variation of current, power and/or voltage such that near-thermoneutral operation at part load is enabled by matching the integral Joule heat production with the integral reaction heat consumption inside the electrolysis cell stack unit, and/or wherein each DC/DC converter module is capable of reversing the current supplied to said electrolysis cell stack unit, causing said electrolysis cell stack unit to perform in fuel cell mode. The power converter system enables facilitated and inexpensive power distribution, long lifetime, as well as improved thermal management during operation of the electrolysis cell stacks. In further aspects, the invention relates to a power distribution system and electrolysis plant comprising said power converter system, as well as to related methods.
H01M 8/0656 - Combinaison d’éléments à combustible avec des moyens de production de réactifs ou pour le traitement de résidus avec des moyens de production des réactifs gazeux par des moyens électrochimiques
H01M 8/12 - Éléments à combustible avec électrolytes solides fonctionnant à haute température, p. ex. avec un électrolyte en ZrO2 stabilisé
H01M 8/18 - Éléments à combustible à régénération, p. ex. batteries à flux REDOX ou éléments à combustible secondaires
H01M 8/249 - Groupement d'éléments à combustible, p. ex. empilement d'éléments à combustible comprenant plusieurs groupements d'éléments à combustible, p. ex. ensembles modulaires
The present invention relates to a power converter system for a plurality of electrolysis cell stack units, comprising: a parallel arrangement of multiple DC/DC converter modules; wherein each DC/DC converter module is configured to power a single electrolysis cell stack unit; and wherein each DC/DC converter module is capable of supplying the electrolysis cell stack unit with a predetermined variation of current, power and/or voltage such that near-thermoneutral operation at part load is enabled by matching the integral Joule heat production with the integral reaction heat consumption inside the electrolysis cell stack unit, and/or wherein each DC/DC converter module is capable of reversing the current supplied to said electrolysis cell stack unit, causing said electrolysis cell stack unit to perform in fuel cell mode. The power converter system enables facilitated and inexpensive power distribution, long lifetime, as well as improved thermal management during operation of the electrolysis cell stacks. In further aspects, the invention relates to a power distribution system and electrolysis plant comprising said power converter system, as well as to related methods.
C25B 1/042 - Hydrogène ou oxygène par électrolyse de l'eau par électrolyse de la vapeur
H01M 8/12 - Éléments à combustible avec électrolytes solides fonctionnant à haute température, p. ex. avec un électrolyte en ZrO2 stabilisé
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
H01M 8/249 - Groupement d'éléments à combustible, p. ex. empilement d'éléments à combustible comprenant plusieurs groupements d'éléments à combustible, p. ex. ensembles modulaires
H01M 8/04298 - Procédés de commande des éléments à combustible ou des systèmes d’éléments à combustible
H01M 8/04007 - Dispositions auxiliaires, p. ex. pour la commande de la pression ou pour la circulation des fluides relatives à l’échange de chaleur
H01M 8/0656 - Combinaison d’éléments à combustible avec des moyens de production de réactifs ou pour le traitement de résidus avec des moyens de production des réactifs gazeux par des moyens électrochimiques
H01M 8/18 - Éléments à combustible à régénération, p. ex. batteries à flux REDOX ou éléments à combustible secondaires
C25B 9/70 - Assemblages comprenant plusieurs cellules
C25B 15/023 - Mesure, analyse ou test pendant la production électrolytique
9.
ELECTROLYSIS SYSTEM WITH CONTROLLED THERMAL PROFILE
This invention relates to a system comprising one or more electrolysis cell(s) and at least one power electronic unit that supplies the cell(s) with a fluctuating voltage, and to a method for operating one or more electrolysis cell(s), comprising providing one or more voltage fluctuations to the electrolysis cell(s) by at least one power electronic unit, enabling the provision of a low-cost electrolysis system which simultaneously allows for fast-response dynamic operation, improved electrolysis efficiency, increased lifetime and high impurity tolerance.
C25B 9/65 - Dispositifs pour l'alimentation en courantConnexions d'électrodesConnexions électriques intercellulaires
H01M 8/0656 - Combinaison d’éléments à combustible avec des moyens de production de réactifs ou pour le traitement de résidus avec des moyens de production des réactifs gazeux par des moyens électrochimiques
10.
SYSTEMS AND METHODS FOR GENERATING SYNTHESIS GAS FOR AMMONIA PRODUCTION
This invention relates to system for the production of ammonia synthesis gas, comprising: one or more electrically driven air separation unit(s) configured to separate nitrogen from air; and one or more solid oxide electrolysis cell(s) configured to produce hydrogen by solid oxide electrolysis of steam in thermoneutral or endothermal mode. By configuring the electrically driven air separation unit(s) and the solid oxide electrolysis cell(s) so that heat emanating from the one or more electrically driven air separation unit(s) is transferred to the one or more solid oxide electrolysis cell(s), nitrogen production may be integrated while enabling high current density, the use of large SOEC stacks and improved reactant conversion. In addition, ammonia production plants comprising the above system as well as related methods are described.
This invention relates to a system comprising one or more electrolysis cell(s) and at least one power electronic unit that supplies the cell(s) with a fluctuating voltage, and to a method for operating one or more electrolysis cell(s), comprising providing one or more voltage fluctuations to the electrolysis cell(s) by at least one power electronic unit, enabling the provision of a low-cost electrolysis system which simultaneously allows for fast-response dynamic operation, improved electrolysis efficiency, increased lifetime and high impurity tolerance.
This invention relates to a system comprising one or more electrolysis cell(s) and at least one power electronic unit that supplies the cell(s) with a fluctuating voltage, and to a method for operating one or more electrolysis cell(s), comprising providing one or more voltage fluctuations to the electrolysis cell(s) by at least one power electronic unit, enabling the provision of a low-cost electrolysis system which simultaneously allows for fast-response dynamic operation, improved electrolysis efficiency, increased lifetime and high impurity tolerance.
brevets
