The diagram illustrates the flowchart about the production of electricity by using coal. It can be separated into three parts: pretreatment, treatment phase, and generation.
In the pretreatment stage, to begin, coal, which is in a raw core state, is extracted by mining, followed by crushing aimed at reducing its size. This well-crushed coal is then transported to a gasifier, where an exothermic reaction is performed, generating gasified coal.
In the treatment phase, the gasified coal is cooled, while waste heat is emitted as a byproduct. In order to filter out unnecessary gaseous substances, especially toxic gaseous byproducts, cleaning is the subsequent process.
Afterward, the treated gases are used as a thrust, pushing the turbine in the gas power plant, resulting in electricity generation. It is worthy to note that waste heat is given off during both the cooling process and electricity generation. Finally, the electricity is transmitted to either other industries or residential estates.