الوصف
D2 ( DIESEL GAS OIL L.*****2 GOST **5 *2) is
a refinery abbreviation for Gasoil. It is the second distillate
from the crude, and can be used without reformers and additives.
So, the first engines used D2 as fuel - before petrol cars as we
know them today was invented. That is because the engine invented
by a German called Diesel, requires no spark plugs. The diesel
engine will ignite and combust when the pressure increases so that
the heated "plug" makes it explode. Here we get the name "Diesel" -
since the same principles are used in diesel engines today.
However, automotive diesel that you fill has additives that the
refinery will add to make the engine more efficient and also easier
to start in the winter. if you read the small print, you will see
that diesel changes "flash point" in the winter. It also has
additives to absorb water that condense as you have it in your car
(same as petrol) - but since the diesel is injected right into the
cylinder, the ice will destroy the nozzles long before the engine.
If you use summer diesel in the winter, you will get better
mileage, but your fuel pipes may freeze and can also burst, and the
wax makes the diesel flow
thicker.
The principal differentiators in GASOIL or D2 is the content of
sulphur. Just *0 years ago, the US EPA introduced a limit of 4%
sulphur in the GASOIL, whereas Europe and the rest of the world
followed later. As in most other cases, when you first have to
remove the sulphur, it was soon discovered ways of doing this more
efficient. Then it was discovered that the sulphur, as sulphuric
acid, could be traded with a good profit - which now is the
motivator for extracting as much as possible. Well, pour this over
limestone, and you get cement and add to it other chemicals, and
you can get cement that are more valuable than
the Gasoil /
D2.
So "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 International Standardisation Organisation - ISO has a standard
for D2 that most oil companies use as their
reference.
|
|
|
|
However, in the US, it is ANSI that has defined the US national
standard for D2, according to proposals from the ASTM, API and
EPA.
|
|
|
|
|
In Europe, similar national variants exists, e.g. in Germany set by
DIN, and in Russia by GOST.
|
|
|
|
|
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.
|
|
| بلد: |
Russia |
| نموذج رقم: |
-
|
| سعر فوب: |
320 ~ 360 / Metric Ton ( Negotiable ) (قابل للتفاوض)
أحصل على آخر سعر
|
| الموقع: |
- |
| سعر الحد الأدنى للطلب: |
320 per Metric Ton |
| الحد الأدني للطلب: |
5000 Metric Ton |
| تفاصيل التغليف: |
BULK |
| موعد التسليم: |
21 days |
| القدرة على التوريد: |
3000000 Metric Ton per Year |
| نوع الدفع: |
T/T, L/C |
| مجموعة المنتج : |
- |
