The diagram depicts the procedure for producing electricity from coal. Overall, it can be seen that the process is a linear sequence that begins with the extraction of coal and culminates with the distribution of electricity. The entire procedure can be broadly divided into three main stages: raw coal preparation, coal treatment, and final stage of electricity supply.
In the first stage, coal is extracted from a coal mine and crushed into smaller pieces by a machine. Subsequently, the crushed coal is delivered by a truck to a gasifier, which marks the second stage. The process continues when coal is heated to produce gas, which is then cooled before being purified or releasing waste heat.
In the final stage, the purified gas is subsequently transferred into a gas power plant before being used to generate electricity. Meanwhile, some of the heat created during this process is released as waste energy. Finally, the electricity is transmitted to end customers, including households and industrial facilities.