Residual Fuel Oil

Definition - What does Residual Fuel Oil mean?

Residual Fuel Oil is the general classification of heavy oil and is considered as the most important byproduct after gas oils and gasoline. It is manufactured to increase the production of light and middle distillates. Diesel ships were the first vessels to use Residual Fuel Oil followed by motor ships and steam ships. It helps in calculating carbon aromaticity index that indicates the ignition delay of fuel oil. Moreover, many power plants also use residual oil to cut the cost of the imported oil.

Petropedia explains Residual Fuel Oil

Residual Fuel Oil is made up of distillation residue. Fuel oil is mainly used in the diesel engines of marine ships. It is obtained during the process of crude oil refining. It consists of all the fuels that have non-boiling fractions. Depending on the temperature of the distillation process, the fuel oils are categorized into different grades. The most common forms of fuel oils are the viscous liquids that require heating for combustion and storage. The composition highly depends on the configuration of the refinery where crude oils are being processed.

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