Flow-rate-adjustable electrolytic tank reaction device for electrically reducing carbon dioxide

Abstract

The invention discloses a flow-rate-adjustable electrolytic tank reaction device for electrically reducing carbon dioxide. The electrolytic tank reaction device comprises two end plates (1), an aeration liquid storage chamber (2), an anode chamber (3) and a cathode chamber (4), wherein the cathode chamber (4) is provided with an S-shaped flow channel; an ion exchange membrane (15) is spaced between the anode chamber (3) and the cathode chamber (4); two electrodes are located at two sides of the cathode chamber (4) respectively; a feeding and discharging opening is formed in the side of the cathode chamber (4); a solution is fed from the bottom and is discharged from the top; circulation of the solution in the cathode chamber is realized by a peristaltic pump (16); an aeration head is arranged at the bottom of the aeration liquid storage chamber (2); meanwhile, the circulation of a cathode solution is completed at the top of the aeration liquid storage chamber while products can be collected. The device is simple in structure and stable in performance, and is capable of carrying out real-time sampling analysis on gaseous products and liquid products, stably realizing circulation of the cathode solution and accurately controlling the flow rate of the liquid flowing through the surface of a catalyst so as to improve the selectivity of reduced products obtained by electrically reducing carbon dioxide.

Description

technical field [0001] The invention relates to an electrolytic cell reaction device for electric reduction of carbon dioxide, more specifically, an electrolytic cell reaction device for electric reduction of carbon dioxide with adjustable flow rate. Background technique [0002] The climate and environmental problems caused by the excessive emission of carbon dioxide have aroused the common concern of all mankind. At the same time, carbon dioxide is also a potential carbon resource that can be used as a raw material to produce a variety of chemical products. In this environment, resource utilization of carbon dioxide has become a mainstream research trend. [0003] Using electrochemical methods to reduce carbon dioxide to small fuel molecules such as carbon monoxide, methane, formic acid, methanol, etc. is one of the important technical approaches at present. [0004] In an aqueous solution, the principle of electroreduction of carbon dioxide into small fuel molecules is a...

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Problems solved by technology

[0005] By reviewing relevant information and literature, no system and method for regulating the electroreduction of carbon dioxide by changing the flow state by using different cathode flow channels has been found.

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