Light oil generally refers to naphtha. Naphtha is a kind of petroleum products, also known as chemical light oil. It is a kind of light oil used as chemical raw material and processed from crude oil or other raw materials. Mainly used as reforming and chemical raw materials, it can separate a variety of organic raw materials, such as gasoline, benzene, kerosene, asphalt and so on. Naphtha is a kind of light oil product, which is obtained by distilling crude oil or cutting corresponding fractions by secondary processing of petroleum. Its boiling point range depends on needs, and it is usually a wide distillation range, such as 30-220℃. However, it is very harmful to human body and environment, and its vapor and air can form an explosive mixture, which will cause combustion and explosion when exposed to open fire and high heat energy. Its vapor is heavier than air, and it can spread to a considerable distance at a lower place, and it will catch fire when it meets a fire source.

Environmental protection oil is an alcohol-based fuel [1], which is a fuel containing alcohols (such as methanol, ethanol, butanol, etc.). ) is the main body. It exists in liquid or solid form. It is also a kind of biomass energy. Like nuclear energy, solar energy, wind energy and water energy, alcohol-based fuels are easy to produce and can be obtained like alcohol in the future.