The most important requirement for fuel in the combustion system of Magliani map series asphalt mixing station is that Engel viscosity when entering the atomizing sheet should be between 1.8 ~ 2.0 OE, and it is absolutely not allowed to be greater than 3.0~4.0 oe, which is the premise of whether the system can use oil. The fuel with viscosity between 1.8 ~ 2.0 OE is most suitable for use in this system.

The general requirements of fuel selection should be moderate viscosity, good combustion performance, high calorific value, good atomization performance, complete combustion, less carbon deposition and ash, little corrosion to burner parts, and easy storage, transportation and pressurization. Heavy oil is generally made of cracked heavy oil, vacuum heavy oil, atmospheric heavy oil or wax oil in different proportions.

Compared with straight-run (vacuum and atmospheric pressure) heavy oil, cracked heavy oil has higher viscosity and relative density, contains more solid impurities, is easy to precipitate, blocks pipelines and fuel preheaters, and is not easy to burn, so the smaller the proportion of cracked heavy oil in the selected heavy oil, the better.

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Excessive sulfur content in fuel oil will cause corrosion of metal equipment and environmental pollution. According to the sulfur content, fuel oil can be divided into high sulfur, medium sulfur and low sulfur fuel oil. Besides carbon and hydrogen, sulfur is the third main component of petroleum. Although it is much lower than the first two, its content is still an important index.

According to the sulfur content, fuel oil is generally divided into low sulfur (LSFO) and high sulfur (HSFO). The sulfur content of the former is below 1%, while the latter usually reaches 3.5% or even 4.5%. There is also low wax oil (LSWR), which has high wax content and high pour point (such as 40 ~ 50℃). High sulfur fuel oil (HSFO) is traded in Shanghai Futures Exchange.

Baidu encyclopedia-fuel oil