Low-temperature synchronous denitration and desulfurization equipment for flue gas

The utility model belongs to the technical field of flue gas purification, and particularly relates to low-temperature synchronous denitration and desulfurization equipment for a flue gas. The provided low-temperature synchronous denitration and desulfurization equipment for the flue gas comprises a waste heat boiler (1), a reaction tower (3), an absorption tower (4) and a water circulating system (5), wherein the waste heat boiler (1) is arranged at the outlet end of the flue gas of the equipment; the reaction tower (3) is arranged at the flue gas outlet end of the waste heat boiler (1); a flue gas inlet I (10) and a flue gas outlet I (11) are formed in the reaction tower (3); an ammonia vapor injection system (5) is arranged inside the reaction tower (3); the inlet of the ammonia vapor injection system (5) is arranged between the flue gas inlet I (10) and the flue gas outlet I (11); a flue gas outlet II (18) and a flue gas outlet II (19) are formed in the absorption tower (4). By adopting the low-temperatur