What is crude gasoline? What is naphtha? ? What’s the difference between the two?

Crude gasoline: The gasoline separated at the top of the distillation column in a typical catalytic cracking unit is referred to as crude gasoline, as it still needs to pass through an absorption and stabilization system to remove the dissolved C4 and C3 components, so as to achieve the appropriate vapor pressure. It is called crude gasoline because it is not yet stable. I’m not sure if other refining units produce it. Naphtha: Generally, it is the atmospheric straight-run gasoline fraction from atmospheric distillation units. Another type is the light hydrocarbon components from the associated gas in oil fields, which are recovered by crude oil stabilization units.

Naphtha, also known as light gasoline, is primarily composed of alkanes, cycloalkanes, aromatics, and olefins with carbon atoms in the C4-C12 range. Its density is approximately 650–750 Kg/m*3, and it can be obtained from various sources; as mentioned earlier, it can be derived directly from the distillation of crude oil, through hydroprocessing, or from coking units, among other methods. Coarse gas oil – what was said upstairs was very clear and comprehensive.

Thank you to the person above, but the reason I asked is... Our unit produces naphtha in the distillation tower. But the same device is also used in distillation towers, where it is called crude gasoline. And doing things like that is more or less the same? Is it a saying between them? And their boiling ranges are also similar. Looking forward to your further guidance

You said that the naphtha from the fractionation tower isn’t a product, right? It’s all treated as one return flow, I guess. The extraction point is lower than that of crude gasoline

Strictly speaking, it’s not a product; it’s just a fraction..... haha.... a word game

As everyone has already mentioned it regarding crude gasoline, let me add some more information: 1. The definition of this term – also known as naphtha – is that it is one of the petroleum products. Its English name is Naphtha; other names include light gasoline and chemical light oil. It is a mixture composed of C4-C12 alkanes, cycloalkanes, aromatics, and olefins. 2. A brief description of the characteristics and conditions of this noun. Naphtha is a colorless to slightly yellow liquid at normal temperature and pressure; it has a distinctive odor and is insoluble in water. The density is 650-750 kg/m3. The sulfur content is not more than 0.08%, the alkane content does not exceed 60%, the aromatic content is no more than 12%, and the olefin content is not more than 1.0%. 3. The processing technology for this product: It is usually obtained through direct distillation of crude oil, or it can be produced by hydrogenating refined gasoline, such as coker naphtha and viscosity-reduced cracked naphtha. 4. Uses: Primarily used as a fertilizer, in the production of ethylene, and as a raw material for catalytic reforming; it can also be used to produce solvent oils or as a component in gasoline formulations. 5. It is a raw material for catalytic reforming. 6. It is a raw material for ethylene cracking

Naphtha, also known as light gasoline or chemical light oil, is an umbrella term for the lighter fractions of petroleum; it is a colorless and transparent liquid that constitutes one of the fractions of petroleum. Naphtha is obtained by distilling crude oil or extracting the appropriate fractions through secondary petroleum processing. Its boiling point range depends on the requirements, and it usually has a wide boiling range, such as 30–220°C. Naphtha is an important raw material for producing ethylene and propylene through tubular furnace cracking, as well as benzene, toluene, and xylene through catalytic reforming. As a cracking feedstock, the naphtha composition is required to have an alkane and cycloalkane content of not less than 70% (by volume) ； When used as a feedstock for catalytic reforming to produce high-octane gasoline components, the feed is a wide-range fraction with a boiling point range of generally 80–180°C; whereas when used for producing aromatics, the feed is a narrow-range fraction with a boiling point range of 60–165°C. The boiling range of light straight-run naphtha commonly used abroad is 0–100°C, while that of heavy straight-run naphtha is 100–200°C℃ ； Catalytically cracked naphtha has

In fact, there is no essential difference between the two. The reason one is called naphtha and the other crude gasoline lies in their different uses: the former is mainly used as a raw material for other processes, such as producing ethylene through cracking or hydrocracking； The latter is mainly used to refine fuel gasoline, solvents, etc……

Different devices have different interpretations. We consider the product obtained through atmospheric and vacuum distillation to be naphtha ； The liquid phase obtained from the liquid separation at the top of the catalytic fractionation tower is called crude gasoline

Crude gasoline refers to the unrefined gasoline separated by the overhead gas separator in the catalytic fractionation tower; it is not a finished product and requires stabilization and desulfurization for refinement, possessing a relatively high octane rating.