FAQ: IGCC and New Coal Technologies
An IGCC or “clean coal” plant actually combines three distinct technologies – a gasifier, a combustion turbine and a steam turbine. In the first phase, gasification, coal is heated to produce a gas. In phase two the gas turns a turbine (similar to a high-powered airplane engine) to make electricity. In phase three the excess heat from the turbine is captured and used to boil water to make steam, which is then used to make electricity.
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