Abstract:
PURPOSE: An internal and external cyclic type acid gas removal apparatus is provided to remove boron compounds and sulfur oxides acid gas contained in combustible waste gas fossil fuel, and to prevent reaction solid materials from adhering to walls. CONSTITUTION: An internal and external cyclic type acid gas removal apparatus comprises an absorbent powder circulator main body(9) and an absorbent powder re-cycling cyclone(11). The absorbent powder circulator main body includes a layer substances supporter(10) and a lower side conical flowing unit(92). The layer substances supporter supports layer substances connecting with combustible waste gas(1) containing either sulfur oxides or boron compounds.