METHOD OF DESULFURIZING WASTE GASES CONTAINING SULFUR DIOXIDE

摘要

METHOD OF DESULFURIZING WASTE GASES CONTAINING SULFUR DIOXIDE Sulfur dioxide (SO2) is absorbed from waste gases by absorbing SO2 in an aqueous absorbent comprising soluble sulfite in an absorber; stripping the SO2 from the absorbent; absorbing the stripped SO2 in a separate absorbent for the SO2; and reacting the thus absorbed SO2 in a liquid Claus reactor forming sulfur. In a preferred embodiment, the gas from the stripping step is subjected to a condensation step in a heat exchanger boiler where steam ingoing to the stripper is generated.