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The image is a flow diagram illustrating the process of coal gasification and electricity generation. It starts with coal being input into a furnace, where it reacts with oxygen to create raw syngas. Flue gases are generated as a byproduct and sent through a heat recovery steam generator to create steam, which powers a steam turbine connected to a generator to produce electricity. The raw syngas goes through a removal process to eliminate CO2, Mercury, and Sulphur, resulting in purified syngas. The syngas then powers a gas turbine connected to another generator to produce additional electricity. Byproducts of the process include slag and hot exhaust gases which are depicted as leaving the system. No numerical data points or percentages are provided.
Given the complexity of the image, the above description may not be entirely accurate.
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The diagram illustrates the entire process of electricity generation from coal.
Overall, it is evident that the process encompasses many different stages, as well as two distinct approaches to generating electricity based on purified syngas and hot steam.
At the beginning of the process, coal is mined and then transported to a large furnace, where it is heated with oxygen from a plant to produce raw synthetic gas and slag as a by-product. This raw gas is then processed as its carbon dioxide, mercury, and sulphur are removed before passing through the gas turbine. At this point, the purified syngas is either used to power a generator and then the resulting electricity is transmitted to the electricity grid, or sent to the second processing method.
Starting from the gas turbine, the hot exhaust gases enter the steam generator where heat is recovered to produce steam and flue gases as exhaust. The steam is then transported to a steam turbine before being used to generate electricity and feed into the transmission system at the final stage of the process.
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