The diagram illustrates how electricity is generated.
Overall, the process of producing electricity comprises three main key stages: the combustion of oxygen, the raw syngas purification, and the final step of generating electricity. Noticeably, purified syngas is treated in two different ways in order to obtain the best electricity outcome.
In the first stage of creating syngas, oxygen is directed from the atmosphere to a high-power furnace that operates on coal. Afterwards, the ultimate products of this machine are raw syngas and slag. Slag is a byproduct that is disposed of through another side of the furnace. Meanwhile, raw syngas undergoes a purification process, which removes substances like CO2, mercury, or sulphur, and creates purified syngas.
After achieving the contaminant-free syngas, it is sent to a gas turbine. Interestingly, while operating the electricity generator, the gas turbine simultaneously produces hot exhaust gases. This form of gas is used to create steam through a heat recovery steam generator; the steam is used to power a steam turbine, which ultimately activates the electricity generator. Consequently, this process produces a type of waste called flue gas that is ejected directly into the atmosphere. Lastly, the generated electricity is transferred to the electricity towers, making it ready for consumption.