Clean Coal Technology
Technologies including flue gas desulfurization, selective catalytic reduction, and carbon capture that reduce coal combustion emissions.
Formula
SO2 removal efficiency (%) = (SO2 in − SO2 out) ÷ SO2 in × 100
Real World
Drax Power Station in Yorkshire retrofitted flue gas desulfurisation units that reduced its SO2 emissions by over 90%, cutting millions of tonnes of acid-rain-causing gases while still burning coal and biomass.
Exam Focus
Avoid calling clean coal 'renewable' — it is a mitigation technology; examiners penalise this misclassification.
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