Light crude oil
The relative density of crude oil is generally between 0.75 and 0.95, with a few being greater than or less than 0.95 75, with a relative density between 0.9 and 1.0, is called heavy crude oil, and less than 0.9 is called light crude oil. Low sulfur light crude oil is the first choice for refineries because its high-value products such as gasoline, diesel, civilian fuel oil, and aviation fuel have high yields. West Texas Intermediate (WTI) is a type of low sulfur light crude oil traded on the New York Mercantile Exchange. It is the benchmark crude oil for the US petroleum industry.

light cycle oil，LCO
Light cycle oil is a byproduct of catalytic cracking that contains a large amount of monocyclic and polycyclic aromatic hydrocarbons, as well as diesel components with low cetane numbers. The light cycle oil in catalysis refers to light diesel oil. Light oil generally refers to hydrocarbon mixtures with a boiling point range of about 50-350 ℃, but the meaning is not very strict. Circulating oil is developed from refined high viscosity index mineral base oil and antioxidant, rust proof, and wear additives. It has good thermal stability and excellent corrosion resistance, which is beneficial for extending the life of bearings.

EN590
EN590 is a type of diesel fuel that represents light petroleum products. It is composed of a complex mixture of hydrocarbons and is primarily supplied to diesel engines as fuel. EN590 diesel is produced through various processes, including crude oil distillation, catalytic cracking, thermal cracking, hydrocracking, and petroleum coking. In addition, it can also be produced through processes such as shale oil processing and coal liquefaction. Classification of diesel: Diesel is mainly divided into two categories: light diesel and heavy diesel. Light diesel is suitable for small vehicles and agricultural machinery, while heavy diesel is more suitable for large vehicles, railway locomotives, and ships.

D2 diesel
D2 diesel is a type of diesel brand in Russia, mainly used to meet the domestic market demand in Russia. Its technical indicators include a freezing point generally below 0 ° C, suitable for use in cold regions; The cetane number is approximately 47, reflecting good combustion performance; In addition, D2 diesel also has specific indicators such as kinematic viscosity, ash content, sulfur content, flash point, moisture content, and density. Compared with the commonly used national standard 0 diesel in China, D2 diesel may have differences in sulfur content and environmental performance. The pour point of National Standard 0 diesel is 0 ° C, and it also has specific indicators such as cetane number, kinematic viscosity, ash content, sulfur content, flash point, moisture content, and density.

Liquefied Natural Gas，LNG
Liquefied natural gas is the liquefied form of natural gas, mainly composed of methane, and is widely recognized as the cleanest fossil energy source on Earth. Colorless, odorless, non-toxic, and non corrosive, its volume is about 1/625 of the volume of the same amount of gaseous natural gas, and the mass of liquefied natural gas is only about 45% of the same amount of accumulated water. The manufacturing process involves purifying the natural gas produced by the gas field, followed by a series of ultra-low temperature liquefaction, and then transporting it by liquefied natural gas ships. The combustion of liquefied natural gas causes very little air pollution and releases a large amount of heat, making it a relatively advanced energy source. Liquefied natural gas is natural gas that is compressed and cooled to its pour point temperature (-161.5 ℃) to become a liquid. It is typically stored in low-temperature storage tanks at around -161.5 ℃ and 0.1MPa. Its main component is methane, which is transported by specialized ships or oil tankers and re gasified during use.

Liquefied Petroleum Gas, LPG
Liquefied petroleum gas is a colorless volatile gas obtained by pressurized and cooled liquefaction of refinery gas or natural gas. Its main components include hydrocarbons such as propane and butane. At room temperature and pressure, LPG is in a gaseous state, but can be converted into a liquid state under pressure or cooling conditions, making it easy to store and transport. Its main components are propane and butane, but it may also contain small amounts of other alkanes and alkenes. LPG is usually a byproduct obtained from oil and gas field extraction or deep processing of petroleum and coal. In the production process, LPG is called liquid hydrocarbon and is filled into specialized pressure vessels or steel cylinders after being pressurized and liquefied. Compared with natural gas, LPG combustion produces more carbon dioxide, but carbon neutrality can be achieved through afforestation and other methods.