Amec Foster Wheeler Energia Oy

Sumitomo Shi Fw Energia Oy

Tobias Brand

Rolf Graf

Reijo Kuivalainen

Maria-Helena Möbs

Sulfurous fuel and CaCO-containing sorbent are combusted in a furnace of a circulating fluidized bed boiler. A dry circulating fluidized bed scrubber includes a reactor with water and Ca(OH)feeds for converting SOin the exhaust gas to CaSOand CaSOand a dust separator in gas flow connection with the reactor. A discharge removes CaO-containing bottom ash from the furnace. A classifier classifies a portion of the removed CaO-containing bottom ash into coarse and finer portions. A fine ash channel conveys some of the finer bottom ash portion from the classifier to a grinder. A ground ash channel conveys some of the ground bottom ash portion from the grinder to a hydrator to hydrate CaO in the ash to Ca(OH). A hydrated ash channel conveys some of the Ca(OH)from the hydrator to the dry circulating fluidized bed scrubber as a sorbent.

Growing community of inventors

Grossostheim, Germany

Tobias Brand