Coal-Fired Power Plants
Abstract
Coal provides around 40% of the world's electricity, more than any other source. Most modern coal-fired power stations burn pulverised coal in a boiler to raise steam for a steam turbine. High efficiency is achieved by using supercritical boilers made of advanced alloys that produce high steam temperatures and large, high-efficiency steam turbines. Alternatives types of coal-fired power plants include fluidized bed boilers which can burn a variety of poor fuels as well as coal gasifiers which allow coal to be turned into a combustible gas which can be burnt in a gas turbine. Emissions from coal plants include sulphur dioxide, nitrogen oxides and trace metals, all of which must be controlled. Capturing ...
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