Coal

Uses of charcoal
Charcoal is used in direct combustion to obtain energy. It is usually used only for household purposes such as heating, cooking or barbecuing. In countries where there is a surplus of forest wood, it can be converted into charcoal and then used in some large-scale projects such as electricity generation. Just as the combustion time of charcoal is longer than that of a similar amount of wood, the charcoal has a higher thermal value than wood.

A charcoal form called activated carbon is used in filters and gas masks to remove toxic vapors. It has innumerable tiny holes on its surface and is ideal for fogging and is made by allowing charcoal to briefly burn with oxygen at the end of the coal-making process. Wood charcoal is often used as a fuel for barbecue and can be formed in chopsticks to use a drawing material. Activated charcoal has a high adsorption capacity, which attracts materials to its surface, thus removing toxic gases and unpleasant odors from the air. This coal is therefore used in aerosol systems and kitchen cookers, as well as in water purification, such as water In aquariums. The dirty water of the aquarium passes over activated charcoal to remove its dirt, then it is re-discharged into the tub .. It can be placed in the refrigerator if it smells unpleasant and rid you of the unpleasant smells found in the refrigerator ..

Specification of good coal

There are many factors that determine the quality of coal produced by any method of production. These factors are:

1. Quality of wood used

For example, in Egypt and the Arab countries prefer coal produced from the wood of citrus trees such as orange trees, guava, mango and olives, which are the best species for the production of good coal. This is due to the components of the main component of cellulose and the proportion of its absorption of soil components .

Carbon ratio

Temperature is of great importance in the quality of coal produced. The higher the temperature of 400 ° C, the lower the quality of the coal produced, as carbon is the main component of good coal.

3 – Humidity in coal

It is also a factor of quality of coal, the lower the humidity, the lower the quality.

4- The quantity and color of ash produced

It is also determined by the main component of the wood used and the amount of salts and components that permeate the cellulose.

5 – the size of coal

The coal industry, its circulation, and the shift from one place to another, result in a significant fraction of coal that is not suitable for use.