base gasoline的意思|示意

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Base gasoline (also known as straight-run gasoline) is a petroleum byproduct that is used as a starting material for the production of gasolines for motor vehicles. It's a fraction that comes from the fractional distillation of crude oil and is composed primarily of hydrocarbons with a boiling point of up to 500 °F.

Base gasoline is the principal feedstock in the \\"catalytic reforming\\" process that makes finished gasoline. It's a relatively low-cost feedstock due to its abundance and high yield. In this process, base gasoline is catalytically converted into a product that has a higher octane rating and is more suitable for use in motor vehicle engines. This process is also used to increase the amount of aromatic hydrocarbons in gasoline, which ultimately improves its performance.

Base gasoline is also used in the production of \\"catalytically cracked\\" or \\"thermally cracked\\" gasoline. This process uses heat and/or a catalyst to break longer hydrocarbon chains into smaller ones, thus increasing their octane ratings and making them more suitable for use in motor vehicles. The resulting gasoline is also more volatile and has a higher vapor pressure, meaning it evaporates more easily and produces a cleaner burn in an engine.

In addition to its use in the refining process, base gasoline is also used as a blending component in finished gasoline to help ensure that it meets specific target properties, such as octane rating, vapor pressure, and hydrocarbon composition. Base gasoline is also used as a blending agent in jet fuel, kerosene, and other petroleum-based fuels.