Aerospace gasoline has the advantages of appropriate density, high calorific value, good combustion performance, rapid, stable, continuous and complete combustion, small combustion area, less carbon deposition and less coking. Good low-temperature fluidity, which can meet the requirements of oil fluidity in cold and low-temperature areas and high-altitude flight.
Step 2 be pure
Compared with the purity of gasoline or diesel, the purity of aviation kerosene is higher, and the energy released by the same weight combustion is greater.
3. The main components are different
The label of aviation gasoline is high, so tetraethyl lead is added to aviation gasoline as an antiknock agent. Now all cars are unleaded gasoline. Burning leaded gasoline will produce heavy metal pollutants, so gasoline is lead-free.
4. Differences in physical properties
Gasoline is a mixture of complex hydrocarbons, with a boiling point of 30 ~ 205℃ and an air content of 74 ~ 123 g/m3, which will explode in case of fire.
Pure aerospace gasoline is a colorless and transparent liquid, which is pale yellow when it contains impurities, and its boiling range is 180 ~ 3 10℃. The density is much higher than 0.84 g/cm3. Insoluble in water, soluble in organic solvents such as alcohol, volatile and flammable.
Extended data:
/kloc-in the 0/9th century, people didn't realize the importance of gasoline. At that time, kerosene was widely used for lighting. At that time, petroleum refining relied on a simple distillation process to separate components with different boiling points from petroleum. Kerosene has a high boiling point and is safe to use when igniting. It has become the main product of crude oil refining, while gasoline and other components are usually burned as fuel.
By the middle and late19th century, internal combustion engines using gasoline were successfully manufactured.
1886 gasoline engine runs successfully as automobile power, so the importance of gasoline is increasing day by day. But only 20% gasoline can be extracted from crude oil by distillation.
19 1 1 year, in order to solve the problem of low gasoline yield, American Standard Oil Company adopted the thermal cracking process invented by William Burton and Robert Humphries to pyrolyze heavy gas oil into light gasoline and other fractions, which improved the gasoline yield as a whole. The thermal cracking process 19 13 was obtained in the United States.
The subsequent catalytic cracking process further improved the gasoline yield and higher octane number than the thermal cracking process.
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