Because crude oil is composed of hundreds of types of hydrocarbon compounds. It cannot be used directly. Must be taken to separate the substance from them first. Separate the mixture of hydrocarbon compounds in crude oil. Using the method of distillation tower to release a sequence of sections in the atmosphere before leading crude oil into refined must exclude the contamination of water and minerals are removed. How is distillation, heating until almost all the crude oil evaporate at the same time, when I go to pull the Spear of the substance. Each type of substance is steam condensation temperature range throughout the different boiling points. By its low boiling point is going to the area on the condensation of Spears at one another. Section I-of the substance with a higher boiling point, condensation is in the lower position, respectively. Some types of hydrocarbon compounds with a boiling point nearby. It is not pure distillation products, but there are many types of chemical contamination. In the distillation of crude oil to choose to keep the product, depending on the purpose of refining to product ingredients and apply to any of the benefits.
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