Fuel Coalescers

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Fuel Coalescers work by combining three forces: a cohesion force, a coalescing force, and a gravity force. Together, these forces are able to separate water from fuel.

Within a coalescer vessel are various coalescing filter elements comprised of fiberglass media with a distinct affinity for water— which means that small water droplets in the fuel are attracted to the coalescing fiberglass media.

These tiny droplets make up the very first force needed to power a fuel coalescer— a cohesive force.

The flow then pushes the water droplets against the fiberglass strands until they eventually reach an intersection and combine with other water droplets to make larger droplets. This is the second force— the coalescing force.

These large drops are then carried to the outside surface of the cartridge and held back once more by the cohesive forces. Because they have a higher specific gravity than the hydrocarbon fluid, they release and settle to the bottom of the vessel. This occurs when gravity is greater than the cohesive force.

As a general rule of thumb, particle removal efficiency increases proportionally with coalescing efficiency. In other words, the larger the drop, the faster and more efficiently it will fall out.

In order to create a more efficient drop, you must employ a tighter, finer filtration media.

You can think of a coalescer vessel as a method of enhanced gravity separation, in which the direction of flow is from the inside to the outside of the cartridge. This helps to minimize surface velocity and helps prevent the water drops from breaking up and being carried downstream.

When water and particulate contamination is removed from fuel, the life of your equipment is increased while the machine downtime, operational costs, and maintenance workload are all lowered substantially.

Hydrocarbon Filtration aims to continue producing highly efficient designs at a competitively low price.

Our Fuel Purification Systems are capable of removing water in fuel oil from an emulsified state as low as 25 PPM. Particulate can also be removed from ISO 22/21/19 to ISO 15/11/09.

Our applications include backup generators for data centers, hospitals, power generation, marine, mining, construction, and cell towers. Most of these industries use fuel that utilizes diesel engines on a daily basis in their haul trucks, loaders, and other systems, as well as on fuel tank farms, and day tank and main tank filtration applications.

Fuel Coalescer Vessels can be used as an inline filtration process to transfer filter fluids from one reservoir to another. This circulation process is also known as Kidney Loop Filtration and is very similar to how our kidneys circulate blood throughout the body. After about 10 to 20 passes back and forth, the water and particulate contamination in fuels generally meets or exceeds new fuel oil cleanliness results.

Many of our filtration systems are NEMA 4 Electrical Compliant and can be operated outdoors in most weather conditions. We also specialize in NEMA 7 explosion proof systems that meet Class 1, Division 2, and Groups C&D electrical specifications.

For ease of logistics and mobility, most of our systems are skid mounted with protective cages and equipped with lifting lugs and forklift slots on all four sides. Our systems can easily be moved by standard forklifts, overhead cranes, flatbed trucks, cargo containers, and trailers.

We offer both simplex and duplex filter vessel and pump options, as well as a sight glass (so you can visually see the accumulation of water from within), and automatic electronic sensors (to drain the water inside of the vessel).

The typical flow rate for our Filter Housings is between 10 and 2000 GPM.

Most systems are 460 V/3 Phase Power, and require anything between 20 to 100 amps of power supply, depending on the size and load of the system. They range in size from 2 feet deep by 2 feet wide by 4 feet tall and 200 pounds, to 6 feet deep by 10 feet wide by 7 feet tall, and weighing up to 6,500 pounds.