The main components of gasoline, what are the main components of gasoline

The main components of gasoline are C4 and C12 hydrocarbons, which are one of the mixed hydrocarbon items.

The main components of gasoline are C4 and C12 hydrocarbons, which are one of the mixed hydrocarbon items. It is a colorless or yellowish, volatile and flammable liquid.

It has a special odor. Gasoline is insoluble in water, soluble in benzene, carbon disulfide.

and alcohol. The composition of gasoline is more complex, mainly alkanes.

From C4 to C12, of which C5 to C9 are the mainstay.

The composition of various gasolines is different, so their physicochemical constants are also different, and there is a certain amplitude, such as: the boiling point is 40 200, the flash point is 58 10, and the specific gravity is.

Uses of gasoline

According to the use, it can be divided into three categories: aviation gasoline, vehicle gasoline, and solvent gasoline. It is mainly used as fuel for gasoline engines, and is widely used in automobiles, motorcycles, speedboats, and helicopters.

Aircraft for agriculture and forestry, etc. Solvent gasoline is used in rubber, paint, grease, spices and other industries, gasoline can also dissolve oil stains, etc., water can not dissolve substances, can play a role in cleaning oil stains.

As an organic solution, gasoline can also be used as an extractant, and is currently used as an extractant, and is most widely used as the mainstream production technology of soybean oil in China.

Leaching oil technology. The operation method of leaching oil technology is as follows: soak soybeans in No. 6 light gasoline, then squeeze oil, and then form soybean edible oil after a series of processing.

Next to the main ruler of gasoline, octane (Ch) should be used

2C h +25o --ignition -- >16co +18h o gasoline is a colorless to pale yellow easy-flowing liquid at room temperature, difficult to dissolve in water, flammable, the distillation range is 30 to 220 for Lingfu oak, and the air content is 74 123 grams of cubic meters when it encounters fire**. The calorific value of gasoline is about 44,000 kJ kg (the calorific value of fuel refers to the heat generated after the complete combustion of 1 kg of fuel).

The main components of gasoline are C5, C12 aliphatic hydrocarbons and naphthenic hydrocarbons.

The English name of gasoline is gasoline (American) petrol (English), the appearance is a transparent liquid, flammable, the distillation range is 30 to 220, the main components are C5 C12 aliphatic hydrocarbons and naphthenic hydrocarbons, and a certain amount of aromatic hydrocarbons, gasoline has a high octane number (anti-knock combustion performance), and according to the octane number is divided into 90, 93, 95, 97 and other grades.

The main components of gasoline are C5 and C12 aliphatic hydrocarbons and naphthenic hydrocarbons, as well as a certain amount of aromatic hydrocarbons.

Gasoline is a volatile and flammable hydrocarbon mixture liquid that is fractionated and cracked from petroleum, and can be used as fuel.

The appearance is a transparent liquid, flammable, the distillation range is 30 to 220, the main components are C5 C12 aliphatic hydrocarbons and naphthenes, as well as a certain amount of aromatic hydrocarbons, gasoline has a high octane number (anti-knock combustion performance), and according to the octane number is divided into 89, 90, 92, 93, 95, 97, 98 and other grades, from January 2012, gasoline grades 90, 93, 97 revised to 89, 92, 95.

Gasoline in the engine cylinder, must be quickly vaporized and form a uniform flammable mixture with air, which is mainly determined by the evaporation of gasoline itself. The main indicators that reflect evaporability are the distillation range and the saturation vapor pressure.

Important properties of gasoline

1. Evaporation.

Gasoline in the engine cylinder, must be quickly vaporized and erected with air to form a uniform combustible mixture, which is mainly determined by the evaporation of gasoline itself. The main indicators that reflect evaporability are the distillation range and the saturation vapor pressure.

2. Stability.

The ability of gasoline to resist oxidation under normal temperature and liquid phase conditions is called the oxidative stability of gasoline, or stability for short. The indicators to evaluate the stability of gasoline are divided into iodine value, actual gum content, and induction period.

3. Anti-explosion.

The property that measures whether a fuel is prone to knocking is called knock resistance, and gasoline knock resistance is expressed by the octane number (RON). The higher the octane number of gasoline, the better the knock resistance. For the same hydrocarbons, the carbon number is small, the knock resistance is good, and the octane number is high.

For all hydrocarbons with the same carbon number, the octane number from large to small is aromatic hydrocarbons, isoparaffins and isomeric olefins, n-olefins and naphthenic alkanes.

4. Cleanability.

Gasoline often contains mechanical impurities and moisture. Mechanical impurities can cause serious consequences such as oil circuit blockage and increased wear. Water mixed into gasoline will accelerate the oxidation of gasoline, and form an acidic aqueous solution with low-water molecular organic acids in gasoline to corrode metals, and it is easy to freeze and form ice particles at low temperatures to block the oil circuit.

Therefore, the mixing of mechanical impurities and water should be strictly controlled in vehicle gasoline.

The above content reference: Encyclopedia - Gasoline.