Electrochemical device, electrolysis system or fuel cell system including the electrochemical device and method of operating the electrochemical device

Abstract

The present invention relates to an electrochemical device (48a to 48b) comprising: at least one electrochemical battery module (10a to 10b) having a gas feed unit (12a to 12b) for feeding at least one reactant gas (14a to 14b) and / or air (16a to 16b) into the electrochemical battery module (10a to 10b); a gas discharge unit (18a to 18b) for discharging at least one exhaust gas (66b), at least one product gas (20a), a waste gas (22a to 22b), and / or enriched air from the electrochemical battery module (10a to 10b); and a heating unit (24a to 24b) for at least heating the at least one reactant gas (14a to 14b) fed from the gas feed unit (12a to 12b) and / or the air (16a to 16b) fed from the gas feed unit (12a to 12b). The proposed heating unit (24a to 24b) includes at least one heat transferr (26a to 26b) that obtains heat from the discharged exhaust gas (66b), the discharged product gas (20a), the discharged waste gas (22a to 22b), and / or the discharged enriched air, and supplies it to the fed at least one reactant gas (14a to 14b) and / or the fed air (16a to 16b), such that the temperature of the fed at least one reactant gas (14a to 14b) and / or the fed air (16a to 16b) is maintained in a temperature range above 500°C, particularly between 500°C and 1000°C. The invention proceeds from an electrochemical device (48a-b), having at least one electrochemical cell module (10a-b), having a gas feed unit (12a-b) to a feed of at least one reactant gas (14a-b) and / or air (16a-b) to the electrochemical cell module (10a-b), having a gas discharge unit (18a-b) to a discharge of at least one offgas (66b), at least one product gas (20a), a waste air (22a-b) and / or an enriched air from the electrochemical cell module (10a-b), and having a heating unit (24a-b) at least for heating of the at least one reactant gas (14a-b) fed in from the gas feed unit (12a-b) and / or of the air (16a-b) fed in from the gas feed unit (12a-b).It is proposed that the heating unit (24a-b) comprise at least one heat transferrer (26a-b) that takes heat from the discharged offgas (66b), the discharged product gas (20a), the discharged waste air (22a-b) and / or the discharged enriched air and supplies it to the at least one reactant gas (14a-b) fed in and / or the air (16a- b) fed in such that a temperature of the at least one reactant gas (14a-b) fed in and / or the air (16a-b) fed in is kept within a temperature range above 500℃, especially between 500℃ and 1000℃.

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