use of fractional distillation petroleum

It is the most important of the fossil fuels. Petroleum occurs under the Earth's crust. It is believed to have formed due to the bacterial action of decomposition on marine animals and prehistoric forests inside the Earth, under conditions of high temperature and pressure. Petroleu..

The fermented liquor contains 9-10% of ethanol and is called wash or wort. It is distilled in a Coffey still (Distillation of wash in a Coffey still) to remove water and other impurities present in wash . The Coffey still consists of two tall fractionating column..

Separation of petroleum into simpler fractions after the removal of unwanted material..

Fractional distillation is employed to separate two or more liquids that are miscible. The boiling points of these liquids should be fairly far apart. When distilled, the liquid with the lower boiling point distils over first, and is collected. It is the firs..

Preparation can be represented as follows: Synthetic petroleum is also a mixture of several alkanes. It is fractionally distilled to obtain petrol, diesel etc. Heavy oil, a fraction of petroleum that is inexpensive is the solvent used..

In the partial separation of heavy water from ordinary water, advantage is taken of the small difference in the boiling points of protium oxide (373.2 K) and deuterium oxide (374.3 K). Since the difference in boiling points is very small, a long fractionating column (about 13m) is u..

This method is used for volatile metals having boiling points lower than their impurities. e.g., zinc, mercur..

This method is used to purify liquids that boil without decomposition and have non-volatile impurities. Impure liquid is boiled and the resulting vapors are condensed to get the pure liqui..

This liquid air contains two main substances, nitrogen and oxygen in liquid forms whose boiling points are -196 o C and -183 o C respectively. So when this liquid air is allowed to warm up, nitrogen with low boiling point boils over first and is separated. What remains behind is liquid oxygen, whi..

The outgoing hot vapors from the main iron still preheat coal tar obtained from the destructive distillation of coal, in a pre-heater. In this process, coal tar loses most of the water it contains, along with some low boiling hydrocarbons. It is then sent to the main iron still (a side r..