At present, countries all over the world attach great importance to flue gas desulfurization and have developed dozens of effective desulfurization technologies, among which the widely used flue gas desulfurization technologies are: (1) lime/limestone - wet method. (2) Rotary spray semi-dry method (LSD). (3) Calcium-in-furnace spraying and humidification activation method (LIFAC). (4) Seawater flue gas desulfurization method. (5) Ammonia flue gas desulfurization method. (6) Simple integrated wet FGD technology.

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