Description
Gasoil D2 - Fuel oil is a fraction obtained from petroleum
distillation, either as a distillate or a residue. 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 *0 °C (**4
°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 alkanes, cycloalkanes 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,
heavier than gasoline and naphtha.
"Low sulphur Gasoil" is no longer 4 percent - but below 0.2
percent. Then we have a new, "Ultra Low Sulphur" at 0.*2% at the
most, and the limit here is (a) that mass spectographs requires
extensive calibration to measure below ***0ppm, and (b) sulphur has
a way to form clogs - the molecules binds to free hydrogen
molecules and form a cluster of molecules that will break if
"cracked" by the refinery, but as explained above, D2 is a
distillate and has not been "cracked". So - take a pint of ULSG,
you may have the misfortune of having 0.1 percent sulphur - but the
average for a barrel will be less then 0.*2 - its just you managed
to get a cluster of molecules
The GOST variant for D2/Gasoil is GOST *****2 and specifies now a
sulphur content of 0.*2 MAX which is according to the ISO standard.
However, the ANSI standard will call this "Ultra Low Sulphur", and
retain 0,2% (***0ppm) as the "Low sulphur. The reduction of sulphur
in the Gasoil used for heating has contributed to less pollution in
many cities.
