简述石油的常减压蒸馏流程
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简述石油的常减压蒸馏流程
英文回答，The continuous distillation process of crude
oil, also known as atmospheric distillation, is a common
method used in oil refineries to separate crude oil into
its various components. The process involves heating the
crude oil in a furnace to vaporize the different
hydrocarbon compounds based on their boiling points.
The crude oil is first heated in a furnace and then
enters a distillation column. As the vaporized oil rises
through the column, it begins to cool and condense at
different heights based on the boiling points of the
various hydrocarbons. The heavier compounds with higher
boiling points condense at the bottom of the column, while
the lighter compounds with lower boiling points condense at
the top.
The condensed liquids are then collected at different
levels of the column and are further processed in separate
units to obtain products such as gasoline, diesel, kerosene, and other petrochemicals. The remaining heavy residue at
the bottom of the column is often used to produce bitumen
or other heavy fuel oils.
This process is called "atmospheric" distillation
because it is carried out at atmospheric pressure, which is
the pressure exerted by the Earth's atmosphere at sea level.
However, some of the lighter components may still remain in
the heavy residue at the bottom of the column. To further
separate these components, a process called vacuum
distillation is used to reduce the pressure in the
distillation column, allowing the lighter components to be
distilled off at lower temperatures.
Overall, the continuous distillation process is a
crucial step in the refining of crude oil, as it allows for
the separation of the various hydrocarbon compounds present
in the crude oil into different useful products.
中文回答，原油的常减压蒸馏流程，也称为大气蒸馏，是炼油厂中常用的方法，用于将原油分离成不同的组分。这个过程涉及将原油在炉中加热，根据其沸点蒸发出不同的烃化合物。
原油首先在炉中加热，然后进入蒸馏塔。随着蒸发的油气在塔内上升，它开始在不同的高度冷却并凝结，根据不同烃化合物的沸点。具有较高沸点的较重化合物在塔底凝结，而具有较低沸点的较轻化合物在塔顶凝结。
然后，在塔的不同级别收集凝结的液体，并在单独的装置中进一步加工，以获得汽油、柴油、煤油和其他石油化工产品。在塔底剩余的重渣通常用于生产沥青或其他重油。
这个过程称为“大气”蒸馏，因为它是在大气压下进行的，这是海平面上地球大气所施加的压力。然而，一些较轻的成分可能仍然残留在塔底的重渣中。为了进一步分离这些成分，使用了一种称为真空蒸馏的过程，以降低蒸馏塔中的压力，从而使较轻的成分在较低温度下蒸馏出来。
总的来说，常减压蒸馏过程是原油精炼中的关键步骤，因为它允许将原油中存在的各种烃化合物分离成不同的有用产品。
