燃烧前捕集 Precombustion(decarbonisation)capture C02 Water vapour Mechanical (and energy excess air) C02 Steam Sulphur desorber Gasifier removal Particle Hydrogen remover Cooling water Steam condenser Nitrogen Heat C02 Fuel Shift absorber Oxygen reactor Gypsum Gas turbine Heat Mechanical Fly ash energy→ recovery steam Bottom ash Steam Electricity Air generator Air Air separation