(3) density: The quality that tastes for oil (Mass) with the specific value that has volume. —— of commonly used unit is overcome / cubic centimeter, kilogram / stere or fair Dun / stere. Follow the change of temperature as a result of bulk and change, reason density cannot break away from temperature and self-existent. Compare to facilitate, the west stipulates the density that falls with 15°C regards petrolic as standard density.
(4) flash point: It is the index that oil tastes security. Oil is tasted heat below specific standard requirement to some temperature, make just formed one flammability mixture with the air all round quite by the steam of its surface transgression, can bring the scintillation that sends instantaneous namely when checking igneous cause and this mixture contact with one standard, the temperature that right now oil tastes is defined namely for its flash point. Its characteristic is blaze shines to destroy namely, the oil that obtains flash point temperature is tasted still fail to offer the enough combustion that can light steam to last in order to maintain, go again when its only be heated and when reaching another higher temperature, once encounter to just be formed with igneous cause,burn continuously, right now temperature weighs ignition point or catch fire dot (Fire Point or Ignition Point) . For all that, but flash point already one oil tastes enough token catch fire flaming risk level, customarily also is tasted to danger according to flash point just about undertake classificationing. Obvious flash point heals low it is dangerous to heal, heal high more safe.
(5) moisture: The existence of moisture can affect the condensation point of fuel oil, as the addition of water content, the condensation point of fuel oil rises gradually. In addition, moisture still can affect the burning behavior of fuel machinery, may cause flameout of the chamber of a stove or furnace, stop the accident such as furnace.
(6) ash content: Ash content is the rest after combustion cannot flaming part, especially after oil of catalytic cracking loop and oil of fuel of oily oar infiltration, powder of silicon aluminous activator can make pump, a powerful person wears away quickly. Additional, ash content still can be enclothed go up in boiler heating surface, make diathermancy addle.
(7) mechanical impurity: Mechanical impurity can jam screen pack, cause oil well pump to wear away to jam with atomizer, the influence burns normally.
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