process of fractional distillation of coal

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 th..

Destructive distillation of coal occurs when coal is heated in the absence of air, at high temperatures. To achieve this, coal is heated in the absence of air in iron retorts, wherein the volatile material evolved is collected as distillate/condens..

When coal is heated without air, it does not burn but produces many by-products. This process of heating coal in the absence of air is called destructive distillation of coal. The main by products are: coke coal tar amino acid liquor ..

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..

Separation of the Constituents of Mixtures - Distillation - Distillation is a method used to separate a solute and a solvent from a solution. In evaporation, vaporization takes place and only the solute is obtained. However, distillation is actually a combined pro..

Distillation is used for separating the constituents of a liquid mixture, which differ in their boiling points. Depending upon the difference in the boiling points of the constituents, different types of distillation like fractional distillation, steam ..

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..

. One may see separate bands in the column formed by different compounds of the mixture, if they are colored. Different components of the mixture are collected in the form of different fractions in separate conical flasks and distilled to get them in a pure fo..

Crude petroleum is pumped into the furnace where it is heated to a temperature of about 400 o C. Petroleum is converted to vapours in the furnace. The vapours of petroleum are fed into the fractionating column from the bottom. As the vapours enter the column, they rise up and grad..

Nuclear Fission and Fusion..