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.
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The International Standardisation Organisation - ISO has
a standard for D2 that most oil companies use as their
reference.
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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.
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In Europe, similar national variants exists, e.g. in
Germany set by DIN, and in Russia by
GOST.
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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.
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| بلد: |
Russia |
| نموذج رقم: |
-
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| سعر فوب: |
320 ~ 360 / Metric Ton ( Negotiable ) (قابل للتفاوض)
أحصل على آخر سعر
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| 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 : |
- |
