| abstract |
Provided is a method for removing a halogen-based gas that suppresses heat generation of the adsorbent, has a high halogen-based gas processing capacity, reduces the odor of used adsorbent and solid waste, and can easily confirm the completion of the reaction. A gas containing a halogen-based gas that generates at least one selected from the group consisting of HF, HCl, HBr, and HI with moisture, and a solid base of 60 to 99.9% by mass with respect to the total mass of the granulated product, A halogenated gas is removed by contacting a granulated product containing 0.1 to 40% by mass of a carbonaceous material in the presence of water. The solid base is preferably sodium hydrogen carbonate, and the carbonaceous material is preferably activated carbon having an average pore radius of 0.1 to 50 nm and a pore volume of 0.05 to 4 cm 3 / g. |