The invention discloses a control method for
aerosol in
flue gas desulfurization by utilizing an
ammonia method and a master desulfurizing
tower, and the control method is characterized in that
flue gas enters the master desulfurizing
tower after being cooled to the
relative humidity of 90 to 100% and the temperature of 60 to 80 DEG C through high-pressure waster mist or prewashing temperature reduction; the generation of the
aerosol particles in the desulfurization by utilizing the
ammonia method is reduced by optimizing desulfurization operating conditions, and the formed
aerosol particles are condensed to grow big and are partially washed to be eliminated through a desulfurizing solution; an appropriate amount of steam is injected into the saturated
flue gas through desulfurizing and eliminating the partial aerosol particles; the oversaturated
water vapor environment required by the secondary condensation and the growth of the aerosol particles is established on the top of the master desulfurizing
tower; and the condensed and the grown aerosol particles are eliminated through a high-efficiency
demister. The invention combines the formation mechanism of the aerosol in the
flue gas desulfurization by utilizing the
ammonia method; and the formation of the aerosol is reduced by optimizing the
process conditions of the desulfurization operation and the
elimination of the formed aerosol is promoted by utilizing a steam
phase change principle at the same time so that the exhaust problem of the aerosol in the
flue gas desulfurization by utilizing the ammonia method can be effectively solved.