Electrolysis system
AssigneeHonda Motor Co., Ltd.
InventorsMasahiro Mohri, Kazuki Yanagisawa, Misato Maki, Hideaki Yoneda, Jumpei Yoshida
Life of this patent
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Abstract
An electrolysis system includes: an oxygen consumption device that consumes, using hydrogen, oxygen gas in exhaust gas; a valve device that is configured to switch a supply destination of the hydrogen-containing gas output from a solid oxide electrolysis stack to either one of the oxygen consumption device or a generating device; and a control device that controls the valve device according to the oxygen concentration in the exhaust gas output from the oxygen consumption device to switch the supply destination of the hydrogen-containing gas.
Claims10
An electrolysis system comprising:
- a solid oxide electrolysis stack that electrolyzes carbon dioxide gas and water vapor;
- a generating device that generates a hydrocarbon from hydrogen-containing gas containing hydrogen gas generated by the solid oxide electrolysis stack through electrolysis;
- an oxygen consumption device that consumes, using hydrogen, oxygen gas in exhaust gas containing the carbon dioxide gas;
- an exhaust gas path that is configured to supply, from the oxygen consumption device to the solid oxide electrolysis stack, the exhaust gas in which purity of the carbon dioxide gas has risen because of consumption of the oxygen gas;
- a hydrogen-containing gas path that is configured to supply the hydrogen-containing gas from the solid oxide electrolysis stack to the generating device;
- a hydrogen-containing gas branch path that branches from the hydrogen-containing gas path and is connected to the oxygen consumption device;
- an oxygen concentration sensor that detects an oxygen concentration in the exhaust gas output from the oxygen consumption device;
- a valve device that is configured to switch a supply destination of the hydrogen-containing gas output from the solid oxide electrolysis stack to either one of the oxygen consumption device or the generating device;
- and
- a control device that controls the valve device according to the oxygen concentration to switch the supply destination of the hydrogen-containing gas.
An electrolysis system comprising:
- a solid oxide electrolysis stack that electrolyzes carbon dioxide gas and water vapor;
- a generating device that generates a hydrocarbon from a hydrogen-containing gas containing hydrogen gas generated by the solid oxide electrolysis stack through electrolysis;
- an oxygen consumption device that consumes, using hydrogen, oxygen gas in exhaust gas containing the carbon dioxide gas;
- an exhaust gas path that is configured to supply the exhaust gas from the oxygen consumption device to the solid oxide electrolysis stack;
- an exhaust gas branch path that branches from the exhaust gas path and is connected to the oxygen consumption device;
- an oxygen concentration sensor that detects an oxygen concentration in the exhaust gas output from the oxygen consumption device;
- a valve device that is configured to switch a supply destination of the exhaust gas output from the oxygen consumption device to the oxygen consumption device or the solid oxide electrolysis stack;
- a tank that is configured to store the hydrogen supplied to the oxygen consumption device;
- and
- a control device that controls the valve device according to the oxygen concentration to switch the supply destination of the exhaust gas to the oxygen consumption device and to open an on-off valve that opens and closes an outlet of the tank.
Dependencies are inferred from the claim text.