Furnace Oil

Furnace oil is a dark viscous residual fuel obtained by blending mainly heavier components from crude distillation unit. As per IS 1593:2018 specification, Furnace Oil is classified into four grades – LV, MV1, MV2 and HV. FO falls under the category of Class C, under PESO classification.

Furnace Oil is a fraction obtained from petroleum distillation, either as a distillate or a residue. Broadly speaking fuel oil is any liquid petroleum product that is burned in a furnace or boiler for the generation of heat or used in an engine for the generation of power, except oils having a flash point of approximately 40 °C (104 °F) and oils burned in cotton or wool-wick burners. In this sense, diesel is a type of fuel oil. Fuel oil is made of long hydrocarbon chains, particularly alkaline, cyclo-alkaline and aromatics. The term fuel oil is also used in a stricter sense to refer only to the heaviest commercial fuel that can be obtained from crude oil i.e. heavier than gasoline and naphtha.

Furnace Oil is a residual fuel (motor spirit / gasoline, high speed diesel and kerosene are distillate fuels). It is a dark, viscous liquid at room temperature. It is a complex mix of hydrocarbons with carbon atoms ranging mainly from 20 to 55. It is produced by blending residues from various refinery processing units and diluting with middle distillates.