A method of removing mercury and device

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PROBLEM TO BE SOLVED : To provide a mercury removing method and a device suppressing re-discharge of mercury without adding an oxidizer or a halide. SOLUTION : The mercury removing method includes bringing treating object gas containing sulfur oxides and a water-soluble mercury compound into contact with aqueous slurry containing a calcium carbonate-based desulfurization agent and MBT like an alkali metal salt of 2-mercaptobenzothiazole (MBT). Addition of MBT to the desulfurization agent slurry containing mercury component suppresses re-discharge of mercury rather than the oxidizer or halide, to suppress corrosion of the device. COPYRIGHT : (C)2010, JPO&INPIT