Why filter compressed air?
By compressing a gas, the concentration of contaminants (dust, hydrocarbons, oil, rust, water, etc.) increases. All these undesirable elements can reduce the performance of equipment using compressed air and cause malfunctions, or even system failures.
The quality of compressed air is therefore of major importance.
To protect the entire production chain, installing a compressed air filter makes it possible to:
• Limit corrosion
• Prevent microbial contamination
• Increase equipment performance and service life
• Reduce risks
• Lower costs
In addition, it is important to protect the dryer from oil emulsions by using a filter.
To achieve consistent and effective compressed air quality, filters must be sized according to the defined objective, while complying with the standards in force in the relevant industrial sector.
Learn more about moisture removal in compressed air:
Which technology should be chosen?
Depending on the compressed air quality to be achieved and the type of contaminant to be removed, you can choose between different types of filters.
Particle filters are used to stop dust, dirt, pollen, etc. Standard filters make it possible to remove 99% of the particles present in the air with a diameter of 0.3 µm.
Coalescing filters are used for the filtration of liquids, oil aerosols, and submicronic particles suspended in compressed air. They are used, for example, to remove hydrocarbons.
Odors and impurities are eliminated by activated carbon filters through adsorption. These are required in applications where the air must be of breathable quality, such as in the food and pharmaceutical industries. Upstream of the activated carbon filter, a coalescing element is installed as a prefilter.
Primarily to produce breathable air, catalyst filter elements can be implemented to decontaminate compressed air. The catalyst reduces the level of undesirable substances in the air through a chemical reaction. Residual dust particles are then captured by a filter media to complete the action of the catalyst.
Featuring a three-dimensional crystalline structure, molecular sieve filters are capable of adsorbing small molecules.
Au plus près du point d’utilisation, pour obtenir la meilleure qualité d’air possible et limiter de nouvelles contaminations post filtration, on utilise des filtres à air comprimé stériles, pour éliminer les microorganismes.
Find an example of sterilizing filtration of compressed air
For which industrial sectors?
Compressed aiCompressed-air filtersr is the fourth most widely used utility in industry.
Industries that use compressed air are therefore numerous: instrumentation, painting, food industry, pharmaceutical industry, electronics, wood & PVC, cereal and cement industries, etc.
Compressed air filters:
- Remove water vapor, dust, microorganisms, and oil vapors from atmospheric air
- Retain oil contaminants in liquid, aerosol, and vapor phases originating from air compressors
- Protect installations from contamination of storage tanks and distribution systems
- Prevent performance degradation of equipment using compressed air
- Reduce premature fouling of final filters
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