The ion exchange resin filter element adopts spherical ion exchange resin, which can effectively remove the acid value in the EH oil by adsorption instead of neutralization, thus prolonging the service life of the oil.

The ion exchange resin filter cartridges ICB-600508 and ICB-600503 ordered by American customers are used in the steam turbine electro-hydraulic control system, and the EHC system generally adopts a high-pressure fire-resistant fuel system. Phosphate ester has become the working medium of EHC system due to its excellent flame resistance and chemical stability, but its acidity is easy to change and cause the aging of anti-fuel oil. The ion exchange resin filter element can be directly upgraded to replace the acid removal filter element used in the original EHC system. Significant achievements have been made in the quality control of phosphate ester fire-resistant oil, which improves the performance of the entire control system and reduces maintenance costs and oil change costs. Huge economic benefits have been achieved.

When the acid value of the EH system is high and the rate of acid production is fast, the service life is relatively short; when the acid value of the EH system is low and the rate of acid production is slow, the service life is relatively long. Usually the service life is more than one year. When the acid value of the fire-resistant oil is above 0.1, and the acid value does not drop after continuous work for two weeks, it means that the filter element has failed and needs to be replaced with a new filter element.