Question

DEFINE CARBONISATION AND TYOES

Answer 1

Answer:

In coal utilization: Carbonization (coke making) 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 of heating coal in this manner is referred to as carbonization or coke making.

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Answer 2

Answer:

In coal utilization: Carbonization (coke making) 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 of heating coal in this manner is referred to as carbonization or coke making.

Carbonization is the term for the conversion of an organic substance into carbon or a carbon-containing residue through pyrolysis or destructive distillation. When biomaterial is exposed to sudden searing heat, it can be carbonized extremely quickly, turning it into solid carbon.

$\sf \orange \implies \red {Heating\: Rate}$

Both carbonization and torrefaction require relatively slow rates of heating, while pyrolysis relies on fast pace of heating to maximize the liquid yield.

$\purple \implies \pink {Oxygen \: Concentration}$

Carbonization takes place with a certain level of oxygen that allows sufficient combustion to supply the heat for the process. The torrefaction process, in contrast tries to avoid oxygen contact as well as combustion.

$\green \implies \blue {Process \:Temperature}$

Torrefaction is a thermal decomposition that takes place at low temperature and within a narrow temperature range of 200–300°C, while carbonization at higher temperature range (>300–600°C) destructive distillation process. Carbonization produces more energy dense fuel than torrefaction, but it has a much lower energy yield.