Filtrering - Marine & Offshore

Filtration in the Marine Industry – Effective Solutions for Ships and Offshore

Filtration plays a crucial role in the marine industry, where operational reliability, safety and environmental considerations are in focus. On board ships – regardless of size – high demands are placed on the purification of liquids, gases and air to ensure optimal performance and compliance with international regulations such as IMO and MARPOL.

At Nordic Filtration, we specialize in supplying filters and filtration systems to the shipping industry and the offshore sector. We offer robust and certified solutions that meet the maritime requirements for operation under extreme conditions.

What types of filtration are used in the marine industry?

Marine applications require different filtration solutions depending on the system and function. The most common types of filtration include:

Fuel filtration: Removes water, particles and impurities from diesel and bunkers to protect engines and generators.
Oil and lubrication filtration: Keeps hydraulic and lubrication systems clean and protects sensitive components from wear and corrosion.
Water treatment: Filtration of drinking water, ballast water and process water. Many ships use reverse osmosis or UV filtration.
Compressed air filtration: Filtration of compressed air used for control, tools, instruments and automation.
Ventilation and HVAC filtration: Protects crew and equipment from dust, particles and moisture in ventilation systems.
Engine room and turbine intake air filtration: Ensures clean air intake for engines and generators.

Compressed air and refrigeration dryers – special requirements offshore

Compressed air systems are indispensable on modern ships. They power everything from automatic valves and instrumentation to tools and safety systems. Therefore, filtering the compressed air is essential to avoid condensation, oil and particles that can damage the equipment.

An important requirement in marine applications is that compressed air refrigeration dryers must be 60 Hz, as this is the standard for the electrical network on board ships. In addition, both filter housings and filters must be corrosion-resistant and approved for use in maritime environments.

Compressed air filter housings are typically used for:

   • Removal of oil, water and solid particles
   • Protection of compressed air-powered instruments and actuators
   • Extending the life of pneumatic systems

Filters and filter housings for marine use

The filters used in the marine industry must be able to withstand vibrations, salt water, high humidity and varying temperatures. Therefore, the following are often used:

   • Stainless steel filter housings (typically AISI 316L)
   • Coalescing filters for oil and water removal in compressed air
   • Mechanical coarse and fine filters for liquids and fuels
   • Activated carbon filtration for odor removal in ventilation systems
   • Automatic self-cleaning filters for continuous operation without manual intervention

Hvilke filtre bruges typisk til øl og spiritus?

Nordic Filtration tilbyder et bredt sortiment af filtre og filterhuse tilpasset bryggeri- og destilleribranchen:

Filterposer
Til grovfiltrering og partikelopsamling

Dybdefiltre (melt-blown)
Til effektiv fjernelse af fine partikler

Lentikularfiltre
Klassisk metode i ølproduktion til klaring

Patronfiltre (membran og dybde)
Til sterilfiltrering og polering

Aktivt kulfiltre
Til smags- og farvekontrol i spiritus

Fødevaregodkendte filterhuse – Hvad skal man være opmærksom på?

Når der arbejdes med fødevarer, stilles der strenge krav til materialer og konstruktion:

Materialevalg:
Filterhuse skal typisk være fremstillet i rustfrit stål AISI 316 eller 304, som er modstandsdygtigt over for både syrer og rengøringskemikalier.

Godkendelser:
Filtre og filterhuse skal være FDA- og EU 1935/2004-godkendt til kontakt med fødevarer.

CIP-kompatibilitet:
Udstyret skal kunne rengøres via Clean-In-Place (CIP)-systemer for at sikre optimal hygiejne.

Hygiejnisk design:
Glatte overflader og svejsninger uden sprækker er vigtige for at forhindre bakterievækst.

FAQ - Marine & Offshore

What is filtration used for in the marine industry?
Filtration in the marine industry is used to clean fuel, oil, water, air and compressed air on board ships. The purpose is to protect engines, technical equipment and crew from harmful particles, moisture and pollution, while ensuring efficient and stable operation.

What types of filters are typically used on board ships?
Ships use, among other things, fuel filters, lubricating oil filters, coalescing filters, coarse and fine filters for liquids, activated carbon filters for ventilation and compressed air filters. These are often found in robust stainless steel filter housings, adapted to maritime conditions.

Why is compressed air filtration important on ships?
Compressed air is used for control, instrumentation and tools. Unfiltered compressed air can contain water, oil and particles that damage the equipment. Therefore, refrigeration dryers and compressed air filters are used to ensure dry and clean air. Refrigeration dryers on board must be 60 Hz to function correctly with the ship's electrical system.

How can Nordic Filtration help with marine filtration?
Nordic Filtration provides tailored filtration solutions for the marine industry, including approved filters and filter housings for both new builds and retrofits. We advise on correct selection and installation, so you achieve maximum operational reliability and comply with all applicable standards.