Haldor Topsoe A/s

Topsoe A/s

Haldor Topse A/s

Technical University of Denmark

Topsoe Fuel Cell A/s

Thomas Heiredal-Clausen

Bengt Peter Gustav Blennow

Tobias Holt Nørby

Jeppe Rass-Hansen

Rainer Küngas

Niklas Bengt Jakobsson

John Bøgild Hansen

Niels Erikstrup

Thomas Rostrup-Nielsen

Peter Vang Hendriksen

Bengt Peter Blennow

Martin Refslund Nielsen

Claus Friis Pedersen

Poul Georg Moses

Jeppe Rass-hansen

Johan Hjelm

Rasmus Gottrup Barfod

Friis Claus Pedersen

Lone Bech

Casper Buchholtz Frederiksen

Cliver Søren Klitholm

Lars Kiilstofte Hansen

Mads Find Madsen

John BØGILD Hansen

Henrik Lund Frandsen

Thomas Karl Petersen

Rainer KÜNGAS

Tobias NØRBY

Tobias Holt NØRBY

Rainer Kungas

Tobias Holt Norby

Theis Loye Skafte

Cliver Soren Klitholm

In a method for supplying oxygen-enriched gas to an oxygen consuming process, in which the oxygen-enriched gas with a low nitrogen content is generated by supplying an anode-side feed gas comprising COto the anode side of a solid oxide electrolysis cell, oxygen is generated on the anode side of the solid oxide electrolysis cell. This way, an anode-side product gas is formed, in which the oxygen-enriched gas comprises at least a part. The oxygen-enriched gas has a low nitrogen content, and the temperature of the oxygen-enriched gas exiting the solid oxide electrolysis cell is between 600 and 1000° C. The method has multiple advantages, first of all as regards energy saving.

Method for supplying oxygen-enriched gas to an oxygen-consuming process

In a method for chromium upgrading of interconnects made of ferritic steel to be used in solid oxide cell stacks, comprising the steps of shaping the interconnect, depositing a coating comprising Cr on at least one surface of the shaped interconnect and performing one or more thermal treatments at a temperature below 1000° C., the resulting Cr concentration near the surface of the interconnect is higher than the Cr concentration in the ferritic steel before shaping. Specifically, the average Cr concentration of the shaped interconnect is increased to 26 wt % Cr or higher.

Method for chromium upgrading of ferritic steel interconnects for solid oxide cell stack applications

A SOC stack has interconnects with a maximum distance between the contact points which are designed to compensate for pressure difference between one side of the interconnect to the other side.

Solid oxide cell stack with a pressure difference between anode and cathode compartments

Improved contact between interconnect and oxygen electrode material is achieved through a contact point between an electrode or a contact layer and a coated ferritic stainless steel interconnect, where the coating on the metallic interconnect comprises Cu.

Contact between interconnect and electrode

Improved contact between interconnect and oxygen electrode material in solid oxide cell (SOC) stacks is achieved through a contact point between the oxygen electrode or an oxygen-side contact layer of the SOC and a coated ferritic stainless steel interconnect in the SOC stack, where the coating on the metallic interconnect comprises Cu.

Contact between interconnect and cell in solid oxide cell stacks

A method for coating an interconnect for a solid oxide cell (SOC) stack comprises providing an interconnect substrate comprising Cr and Fe, coating the interconnect substrate with a first metallic layer by electrodeposition, coating the resulting structure with a second layer of metallic cobalt by electrodeposition and coating the resulting structure with a layer of metallic copper by ion-exchange plating. This way, a metallic copper-cobalt coating is formed on the interconnect.

Deposition of a coating on an interconnect for solid oxide cell stacks

A sandwiched gasket is used for an SOC stack system to provide flexible, yet electrically insulation properties to the sealing between mounting interfaces of the system.

Electrically insulating gasket for SOC unit

Multiple gas inlet or outlets for a SOC unit is provided by stacked layers with cut outs for gas channels which overlap.

Gas inlet for SOEC unit

The invention concerns a process for monitoring failure situations related to feed and/or purge flow in electrolyzer cells, stacks or systems, said monitoring process being combined with appropriate actions to be taken in case of such failure situations, wherein (a) the current and/or the voltage are monitored and controlled over a single cell, over all the cells or over one or more selected cells in a stack or a system of stacks, (b) in case the current, the voltage or the ratio between voltage and current crosses its pre-defined threshold value, a failure mode is detected and communicated to the control system, and c) the voltage levels of the system are adjusted to be within safe limits (safe-mode limits).

Process for monitoring, protection and safety shut-down of an electrolyser system

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Copenhagen, Denmark

Thomas Heiredal-Clausen