Chlor-alkali Anode and Cathode

CHLOR-ALKALI ANODE & CATHODE

Our company can provide the zero-gap electrolyzer, sizes can be 2.7m2 and 3.3m2, which can well replace with the UHDE, AKC, NBZ and CEC electrolyzer.

The electrolyzer is mainly made of titanium anode and nickel cathode, The titanium chlor-alkali anode produces caustic soda by electrolysis common salt water solution, prepares chlorine by titanium chlor-alkali anode and produces hydrogen and caustic soda by nickel chlor-alkali cathode reaction. In process of producing chlor-alkali, RuTi coating has low consumption and is characterized by low chlor-alkali potential, and stable size and shape compared with graphite electrode. And under the same electrolysis environment, the product quality is higher, the energy consumption is lower and the chlorine purity is higher in comparison with the graphite.

Advantages:

The structure design for our chlor-alkali anode and chlor-alkali cathode is more adapted to high current density operation. it lowered the power consumption, improved the high current density operation, reduced the structure voltage, improved outlet structure, reduced leakage current, improved cell's rigidity. The chlor-alkali Anode half-shell sealing surface use Ti / Pd plate and have good corrosion resistance. the chlor-alkali cathode half-shell use new cathode mattress to improve the chlor-alkali cathode mesh surface installation mode.

Reaction principle

Anode Process

the Chlor-alkali Anode anode chamber is filled with high-density refined salt water (NaCl) by removing impurities and the anode is soaked in Brine solution and connected to a direct electric current (+).
NaCl reacts and ionizes into Na+ and Cl- ions. The Cl- ion is oxidized by anode and becomes chlorine gas (Cl2).
Na+ ion is permeated with the ion exchange membrane with water and processed to a cathode chamber.
The generated chlorine gas and Brine solution of lower density is discharged from the Chlor-alkali anode chamber.

Cathode Process
The Chlor-alkali cathode chamber is filled with slightly diluted caustic soda (NaOH) and pure water and then the Chlor-alkali cathode is soaked in caustic soda and connected to the direct electric current (-).
Water in the Chlor-alkali cathode chamber is ionized to H+ and OH- ions. H+ ion is deoxidized by Chlor-alkali cathode and becomes hydrogen gas (H2).
The OH- ion bonds to the Na+ ion from the Chlor-alkali anode to make caustic soda (NaOH).

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