Novel electrode unit with guide rhombic structure, electrolysis unit and application

Abstract

The invention provides a novel electrode unit with a guide rhombus structure, an electrolysis unit and application, the novel electrode unit with the guide rhombus structure comprises an electrode frame and an electrode plate; an electrode plate is arranged in the electrode frame, and the electrode frame and the electrode plate are coaxially arranged; the electrode frame and the electrode plate form a liquid storage cavity; the electrode frame is provided with a liquid inlet flow channel and a gas-liquid outlet flow channel which are communicated with the liquid storage cavity; the electrode plate is a steel plate, and a plurality of concave-convex rhombic units are arranged on the surface, located in the liquid storage cavity, of the electrode plate at intervals; the plurality of rhombic units are uniformly distributed, and each rhombic unit is provided with a diagonal line which is parallel to the flowing direction of liquid flowing through the electrode plate. According to the novel electrode unit with the guiding rhombic structure, due to the fact that the rhombic structure units arranged in the concave-convex mode are arranged, uniform distribution of raw material alkali liquor on the polar plate can be promoted, contact resistance and the retention time of bubbles in a small chamber are reduced, the electrolysis efficiency is improved, and energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production by electrolysis of water, and in particular relates to a novel oriented diamond-shaped electrode unit, an electrolysis unit and an application thereof. Background technique [0002] Hydrogen energy is a new type of clean energy. In the process of hydrogen energy utilization, only water will be produced in the end, and no pollutants or carbon dioxide emissions will be generated. Therefore, under the background of the great development of clean energy and the historical background of "carbon peaking" and "carbon neutrality", the development of hydrogen energy technology is imperative. At present, hydrogen production by electrolysis of water is the most commonly used and only large-scale commercial hydrogen production method. The structure of the electrolyzer determines the flow distribution of the electrolyte, which has an important influence on the efficiency of the electrolytic hydrog...

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Problems solved by technology

This will lead to a large difference in the lateral velocity distribution of the lye on the electrode plate, that is, the flow velocity in the central area of ​​the electrode plate is relatively high, and the flow velocity in the two sides is relatively small, which will further lead to the uneven concentration of lye in the small chamber, and the two sides of the electrode plate Regional bubbles are not easy to be brought out by the lye, and with the increase of the size of the electrolytic cell, the uneven distribution of the lye becomes more serious, which will greatly hinder the development of large-scale electrolyzer equipment;

[0004] 2. The concave-convex structure on the surface of the electrode plate makes the two sides of the electrode plate in "top-to-top" contact, that is, they are not in complete contact. As the electrolysis progresses, a large number of air bubbles generated in the small chamber move to the position near the concave-convex apex, which will increase the number of electrode plates. Contact resistance increases electrolysis energy consumption;

[0005] 3. When the bubbles in the electrolysis unit pass through the concave-convex structure, they may be "stuck" in the depression, increasing the residence time of the bubbles and increasing the energy consumption of electrolysis

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