Mechanical Engineering - Thermodynamics - Discussion

Heating of coal in absence of air to produce coke its called carbonisation.

Braking of fuel called atomisation.

Carbonization (or Carbonisation) is the term for the conversion of an organic substance into carbon or a carbon-containing residue through pyrolysis or destructive distillation.

It is the destructive distillation of bituminous coal, done in the absence of air in order to obtain coke and other fractions having a greater percentage of carbon than the original material.

Atomization occurs by forcing fuel through a small jet(opening) under high pressure to break it into a fine misted spray.

With presence of oxygen it gets oxide (i.e) carbon-di-oxide. Without oxygen it is carbon.

Carbonisation is the term for the conversion of an organic substance into carbon or a carbon-containing residue through pyrolysis or destructive distillation. It is often used in organic chemistry with reference to the generation of coal gas and coal tar from raw coal. Fossil fuels in general are the products of the carbonization of vegetable matter. The term carbonization is also applied to the pyrolysis of coal to produce coke. Carbonization is also a stage in the charcoal making process, and is considered the most important step of all since it has such power to influence the whole process from the growing tree to the final distribution of charcoal to various sources.