1) Calefaction 2) Carbonisation 1) Carbonisation 2) Chemical process 3) Destructive distillation 
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 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 carbonizatio...
• (n.) The act or process of carbonizing.
(from the article `chemical industry`) ...made up of six carbon (C) atoms and six hydrogen (H) atoms and has the chemical formula C6H6. Benzene has long been an industrial chemical. ... Coke is the solid carbonaceous residue that remains after certain types of coal are heated to a high temperature out of contact with air. The process .....
Car`bon·i·za'tion noun [ Confer French carbonisation .] The act or process of carbonizing. 
[n] - the destructive distillation of coal (as in coke ovens)
carbonisation noun the destructive distillation of coal (as in coke ovens)