The invention relates to a deacidification treatment process for
flue gas containing high
fluorine and
chlorine, and belongs to the technical field of
flue gas treatment. According to the process, the
flue gas is treated by adopting dry deacidification, and a novel deacidification agent is prepared aiming at the characteristic that the
flue gas contains a large amount of
halogen and
fluorine ions. Natural
zeolite is subjected to modification treatment by adopting a
sodium hydroxide solution, the activity of the
zeolite is enhanced by
roasting in a
muffle furnace, and the
zeolite and
lime are well combined, so that efficient defluorination is realized. In addition, the particle size of the baking soda is refined through a
grinding method, the specific surface area of the baking soda is remarkably increased, the contact area and the
reaction rate with acid
smoke are increased, a proper amount of
polyethylene glycol is added,
moisture on the surfaces of baking soda particles is adsorbed and fixed through the hygroscopicity and the film-forming property of the
polyethylene glycol, agglomeration and hardening are prevented, and meanwhile protective films are formed on the surfaces of the baking soda particles. The stability and the
dispersity are enhanced. The zeolite loaded with
lime is combined with modified baking soda to synergistically remove
halogen and
fluorine ions in the acidic
flue gas, so that efficient defluorination and dehalogenation are realized.