The invention belongs to the technical field of dechlorinating agents, and relates to a regenerated
flue gas dechlorinating agent and a preparation method thereof, the dechlorinating agent comprises the following components by
mass: 20%-30% of a carrier, 50%-60% of an
active component, 10%-25% of an auxiliary agent, 0.5%-1.5% of an
inert separant, and 1%-10% of a pore forming agent; the sum of the
mass percentages of the components is 100%. According to the prepared regenerated
flue gas dechlorinating agent, the modified
molecular sieve is adopted as a carrier, the rich pore channel structure of the
molecular sieve is optimized, the pore volume and the specific surface area are increased, the surface acidity of the
molecular sieve is enhanced, and the combination degree of the modified molecular
sieve carrier and
active components is enhanced; when multiple
active components are loaded on the molecular
sieve to prepare the dechlorinating agent for use, the adsorption activity of the dechlorinating agent is improved, and meanwhile, due to the addition of the
inert separant and the auxiliaries, the
sintering of the
active components is prevented, so that the whole structure of the dechlorinating agent is more stable, the maximization of the
chlorine capacity of the dechlorinating agent is effectively realized, and the dechlorinating agent has the characteristic of high temperature and high
water resistance.