Electrochemical reaction device
First Claim
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1. An electrochemical reaction device comprising:
- a reaction vessel comprising a first accommodating part configured to accommodate a first electrolytic solution containing carbon dioxide, a second accommodating part configured to accommodate a second electrolytic solution containing water, a first inflow port for introducing the first electrolytic solution containing the carbon dioxide to the first accommodating part, a first outflow port for discharging the first electrolytic solution containing a first gas component from the first accommodating part, a second inflow port for introducing the second electrolytic solution to the second accommodating part, and a second outflow port for discharging the second electrolytic solution containing a second gas component from the second accommodating part;
a reduction electrode disposed in the first accommodating part;
an oxidation electrode disposed in the second accommodating part;
a power supply connected to the reduction electrode and the oxidation electrode;
a first gas/liquid separating unit configured to separate the first electrolytic solution and the first gas component containing a gas reduction product and the carbon dioxide, and comprising a third inflow port for introducing the first electrolytic solution containing the first gas component discharged from the first outflow port, a third outflow port for discharging the first gas component separated from the first electrolytic solution, and a fourth outflow port for discharging the first electrolytic solution from which the first gas component is separated;
a first gas/liquid mixing unit configured to mix the first gas component with the first electrolytic solution, and comprising a fourth inflow port for introducing the first electrolytic solution discharged from the fourth outflow port, a fifth inflow port for introducing the first gas component discharged from the third outflow port, a fifth outflow port for discharging the first electrolytic solution in which the carbon dioxide is dissolved, and a sixth outflow port for taking out the gas reduction product not dissolving in the first electrolytic solution; and
a second gas/liquid mixing unit configured to dissolve carbon dioxide in the first electrolytic solution, and comprising a sixth inflow port for introducing the first electrolytic solution discharged from the fifth outflow port, a seventh inflow port for introducing the first electrolytic solution from a first electrolytic solution tank, an eighth inflow port for injecting carbon dioxide from a carbon dioxide tank into the first electrolytic solution introduced from the sixth inflow port and the seventh inflow port, and a seventh outflow port for sending the first electrolytic solution in which the carbon dioxide dissolves to the first inflow port.
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Abstract
An electrochemical reaction device in an embodiment includes: a reaction vessel including a first accommodating part to accommodate a first electrolytic solution containing carbon dioxide, and a second accommodating part to accommodate a second electrolytic solution containing water; a reduction electrode disposed in the first accommodating part; an oxidation electrode disposed in the second accommodating part; a power supply electrode connected to the reduction electrode and the oxidation electrode; and a third accommodating part to mix a first gas component produced in the first accommodating part with the first electrolytic solution after the first gas component is produced.
4 Citations
8 Claims
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1. An electrochemical reaction device comprising:
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a reaction vessel comprising a first accommodating part configured to accommodate a first electrolytic solution containing carbon dioxide, a second accommodating part configured to accommodate a second electrolytic solution containing water, a first inflow port for introducing the first electrolytic solution containing the carbon dioxide to the first accommodating part, a first outflow port for discharging the first electrolytic solution containing a first gas component from the first accommodating part, a second inflow port for introducing the second electrolytic solution to the second accommodating part, and a second outflow port for discharging the second electrolytic solution containing a second gas component from the second accommodating part; a reduction electrode disposed in the first accommodating part; an oxidation electrode disposed in the second accommodating part; a power supply connected to the reduction electrode and the oxidation electrode; a first gas/liquid separating unit configured to separate the first electrolytic solution and the first gas component containing a gas reduction product and the carbon dioxide, and comprising a third inflow port for introducing the first electrolytic solution containing the first gas component discharged from the first outflow port, a third outflow port for discharging the first gas component separated from the first electrolytic solution, and a fourth outflow port for discharging the first electrolytic solution from which the first gas component is separated; a first gas/liquid mixing unit configured to mix the first gas component with the first electrolytic solution, and comprising a fourth inflow port for introducing the first electrolytic solution discharged from the fourth outflow port, a fifth inflow port for introducing the first gas component discharged from the third outflow port, a fifth outflow port for discharging the first electrolytic solution in which the carbon dioxide is dissolved, and a sixth outflow port for taking out the gas reduction product not dissolving in the first electrolytic solution; and a second gas/liquid mixing unit configured to dissolve carbon dioxide in the first electrolytic solution, and comprising a sixth inflow port for introducing the first electrolytic solution discharged from the fifth outflow port, a seventh inflow port for introducing the first electrolytic solution from a first electrolytic solution tank, an eighth inflow port for injecting carbon dioxide from a carbon dioxide tank into the first electrolytic solution introduced from the sixth inflow port and the seventh inflow port, and a seventh outflow port for sending the first electrolytic solution in which the carbon dioxide dissolves to the first inflow port. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electrochemical reaction device comprising:
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a reaction vessel comprising a first accommodating part configured to accommodate a first electrolytic solution containing carbon dioxide, a second accommodating part configured to accommodate a second electrolytic solution containing water, a first head space configured to accommodate a first gas component containing a gas reduction product and the carbon dioxide at an upper portion of the first accommodating part, a second head space configured to accommodate a second gas component at an upper portion of the second accommodating part, a first inflow port for introducing the first electrolytic solution containing the carbon dioxide to the first accommodating part, a first outflow port for discharging the first electrolytic solution from the first accommodating part, a second outflow port for discharging the first gas component from the first head space, a second inflow port for introducing the second electrolytic solution to the second accommodating part, a third outflow port for discharging the second electrolytic solution from the second accommodating part, and a fourth outflow port for discharging the second gas component from the second head space; a reduction electrode disposed in the first accommodating part; an oxidation electrode disposed in the second accommodating part; a power supply connected to the reduction electrode and the oxidation electrode; a first gas/liquid mixing unit configured to mix the first gas component with the first electrolytic solution, and comprising a third inflow port for introducing the first electrolytic solution discharged from the first outflow port, a fourth inflow port for introducing the first gas component discharged from the second outflow port, a fifth outflow port for discharging the first electrolytic solution in which the carbon dioxide is dissolved, and a sixth outflow port for taking out the gas reduction product not dissolving in the first electrolytic solution; and a second gas/liquid mixing unit configured to dissolve carbon dioxide in the first electrolytic solution, and comprising a fifth inflow port for introducing the first electrolytic solution discharged from the fifth outflow port, a sixth inflow port for introducing the first electrolytic solution from a first electrolytic solution tank, an seventh inflow port for injecting carbon dioxide from a carbon dioxide tank into the first electrolytic solution introduced from the fifth inflow port and the sixth inflow port, and a seventh outflow port for sending the first electrolytic solution in which the carbon dioxide is dissolved to the first inflow port.
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Specification