Let's understand the connection mode of the electrolyzer stack according to the electrode-kylin-tech

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Let's understand the connection mode of the electrolyzer stack according to the electrode

Release time:

Dec 09,2021

The high temperature of the electrolytic cell can be achieved by changing the electrode spacing and converting the electrical energy consumed by the ohmic voltage drop into thermal energy. When electrolytic molten sodium hydroxide, the tank body can be iron or nickel, and the molten electrolyte containing chloride is often electrolyzed due to the inevitable small amount of water in the raw material, which will make the anode generate wet chlorine gas.

The high temperature of the electrolyzer stack can be achieved by changing the electrode spacing and converting the electrical energy consumed by the ohmic voltage drop into thermal energy. When electrolytic molten sodium hydroxide, the tank body can be iron or nickel, and the molten electrolyte containing chloride is often electrolyzed due to the inevitable small amount of water in the raw material, which will make the anode generate wet chlorine gas.

The corrosive effect on the electrolyzer stack is very strong, so the electrolytic bath of molten chloride is generally made of ceramic or phosphate materials, and iron can be used in the parts that are not affected by chlorine. The cathode and anode products in the molten salt electrolytic tank are also required to be properly separated and should be led out of the tank as soon as possible, so as to prevent the cathode product metal sodium from floating on the surface of the electrolyte for a long time and further acting with the anode product or oxygen in the air.

Because the non-aqueous electrolyzer stack in the preparation of organic products or electrolytic organic matter, often accompanied by a variety of complex chemical reactions, so that its application is limited, not much industrialization. The general use of organic electrolyte, low conductivity, the reaction rate is also small. Therefore, it is necessary to use a lower current density and minimize the pole spacing. The electrode structure using a fixed bed or a fluidized bed has a larger electrode surface area, which can increase the production capacity of the electrolyzer stack.

Electrolyzer stack according to the electrode connection, can be divided into unipolar and complex two types of electrolyzer stack. The electrodes of the same polarity in the unipolar electrolyzer stack are connected in parallel with the DC power supply, and the polarity of both sides of the electrode is the same, that is, the anode or the cathode at the same time. The electrodes at both ends of the bipolar electrolyzer stack are respectively connected to the positive and negative electrodes of the DC power supply to become an anode or a cathode.

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