What is fuel oil treatment?

The settling tank is the first step in fuel treatment process. Water and sediments can be separated by gravity and drained off at the bottom of the tank. Effective cleaning of residual fuels can only be ensured by centrifuges: a clarifier to separate particles and/or a purifier to separate water.

What is fuel oil additive?

Heating oil additives are fuel oil additives (chemicals) that help improve the efficiency of your tank’s combustion. These alterations help remove any innate fuel issues which lead to an increased efficiency from your fuel and your tank.

What are treatment methods of marine heavy fuel oil used onboard ship?

Purifiers: For removal of water and sludge from the heavy grade oil, fuel oil purifiers are used. Depending upon the owner’s choice, either conventional or modern purifiers (computer driven fuel cleaning systems) can be installed on a ship. The oil flow remains continuous even during the sludge discharge process.

How often should settling tanks be checked and drained?

All other double bottom and/or deep bunker tanks are subject to Classification inspection and would normally only be inspected on a 60 month frequency. Each Service and Settling fuel tanks, on a rotational basis, are to be emptied at intervals not exceeding 36 months or at Dry Dock.

What temperature should lubricating oil be maintained at when passing through the purifier?

Water should be injected into the oil before purifying at a rate of between 3 to 5% of oil flow that is also continuously renews the water seal in the purifier bowl. The oil temperature should be around 75 c and water temperature about 5c higher than oil. It can be done continuously or intermittently.

Can you mix heating oil and diesel fuel?

Can I mix diesel with heating oil? If you run out of heating oil for your home’s furnace at some point and you have diesel or you’re close to a gas station, you can use diesel fuel in your oil tank. The reason this is ok is that heating oil is essentially the same as diesel fuel.

What are fuel additives?

Fuel additives are compounds formulated to enhance the quality and efficiency of fuels used in motor vehicles. They increase a fuel’s octane rating or act as corrosion inhibitors or lubricants, thus allowing the use of higher compression ratios for greater efficiency and power.

Why back pressure is maintained in purifier?

Back Pressure: The back pressure should be adjusted after the purifier is started. The back pressure varies as the temperature, density, viscosity of feed oil inlet varies. The back pressure ensures that the oil paring disc is immersed in the clean oil on the way of pumping to the clean oil tank.

What is difference between purifier and clarifier?

The key difference between purifier and clarifier is that the purifier consists of a dam ring to create a line of separation between fuel and water whereas the clarifier consists of a sealing ring to prevent the fuel tank from water and dissolved impurities.

What HFO means?

The generic term heavy fuel oil (HFO) describes fuels used to generate motion and/or fuels to generate heat that have a particularly high viscosity and density.

What do oil tankers use for fuel?

Most tankers carry either crude oil from oil fields to refineries or petroleum products such as gasoline, diesel fuel, fuel oil, or petrochemical feedstock from refineries to distribution centres.

What is the difference between heavy fuel oil and diesel?

Unlike heavy fuel oil (HFO), marine diesel oil does not have to be heated during storage. Marine diesel oil is sometimes also used synonymously with the term “intermediate fuel oil” (IFO). In the strict sense, the term marine diesel oil mainly refers to blends with a very small proportion of heavy fuel oil.