| 摘要 |
An air pollution control apparatus includes: a denitration unit 12 that removes nitrogen oxides from a flue gas 11A to an extremely low concentration, the flue gas being discharged from a boiler B and containing nitrogen oxides, sulfur oxides, and carbon dioxide; a desulfurization unit 13 that is installed on a gas flow downstream side of the denitration unit 12 to remove the sulfur oxides in a flue gas 11B to an extremely low concentration; a finish denitration and desulfurization unit 14 that is installed on the gas flow downstream side of the desulfurization unit 13 to perform finish denitration and desulfurization of NO 2 having an extremely low concentration and SO 2 having an extremely low concentration remaining in a flue gas 11C by an absorbent containing sulfite; and a carbon dioxide recovery unit 15 that is installed on the gas flow downstream side of the finish denitration and desulfurization unit 14 to remove and recover the carbon dioxide in a flue gas 11D. |
