FORBLUE™ FLEMION™ Functions and Features

Energy savings by low electric resistance

Purified brine is decomposed by electrolysis with DC power. Chlorine is generated at the anode, sodium hydroxide (also called caustic soda) and hydrogen are generated at the cathode. Oxidation at the anode occurs simultaneously with reduction at the cathode, which makes current flow. The amount of products are propotional to the electrical current flow. The amount of energy consumed is a product of the voltage and current applied to electrolyzers, resulting in lower resistance of the membrane making lower voltage, and therefore reduces energy consumption. AGC has continued its efforts to reduce electric resistance of ion exchange membranes over the last 40 years by implementing innovative designs. Our current flagship product F-8080 is a fluorinated cation exchange membrane that offers extremely low resistance and is the preferred product by many customers.

High current efficiency

The electrical current efficiency is the ratio of the actual mass of a substance liberated from an electrolyte by the passage of current to the theoretical mass liberated according to Faraday's law. It is usually expressed as a percentage. A small part of hydroxide ions (OH-) generated on the cathode (negative side) of the electrolyzer passes through the cation-exchange membrane to the anode side and cannot be collected as products. Reducing this part as much as possible increases the current efficiency. Our fluorinated cation exchange membrane for salt electrolysis has a carboxlic polymer layer which makes high electrical current efficiency. This fluorinated carboxylic polymer was developed by AGC to industrialize the membrane process of salt electrolysis. Now it is possible to keep electrical current efficiency 97% to 98% continuously.

Stable performance due to less impurity influence

The brine used for electrolysis includes impurities such as Ca, Mg. The membrane can lose a part of the performance by impurities deposited in its body. For example, Ca reduces current efficiency, while Mg increases voltage. AGC minimized the influence of impurities to the membranes by investigating the mechanisms of impurities effects. This makes the membrane to provide stable long-term performance.

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