The diagram illustrates the process of generating electricity from coal. The procedure involves several stages, starting from coal supply and ending with the distribution of electricity.
Initially, coal is supplied and transported via a conveyor belt to a pulveriser or mill, where it is ground into fine particles. These pulverised coal particles are then fed into a boiler. Inside the boiler, the coal is burned to produce heat, which converts water into steam.
The generated steam is directed towards a steam turbine, causing it to spin. The spinning turbine drives a generator, which in turn produces electricity. The electricity is then transmitted through substations and transformers before being distributed through power lines to homes and businesses.
Additionally, the diagram shows an ash system connected to the boiler, which manages the disposal of ash produced during combustion. Water used in the process is purified and recirculated, and the exhaust gases from the boiler are released through a stack.
In summary, the coal-based electricity generation process involves the sequential steps of pulverising coal, burning it to generate steam, using the steam to drive a turbine and generator, and finally distributing the produced electricity. This method also incorporates systems for ash disposal and water purification to support continuous and efficient operation.