Flue Gas Desulfurization Industrial Agitator

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Description of Flue Gas Desulfurization Industrial agitator

Flue gas desulfurization industrial agitator is widely used in wet flue gas desulfurization processes based on CaCO3 (limestone). In the wet desulfurization process, the agitator is mainly used for crushing, mixing, and conveying limestone. There are two types of agitators in the power plants, which are top entry agitator and side entry agitator. The top entry agitator is installed on the top of the tank to mix limestone solution and gypsum solution, so as to prevent sedimentation. The side entry agitator is mainly used in the wet desulfurization tower to stir the slurry in the absorption tower, prevent precipitation, make limestone, and other desulfurization additives comminuted, mixed, and transported, and promote the uniformity of oxidation air, which is conducive to the reaction in the slurry.

Flue Gas Desulfurization Industrial Agitator

Features of Flue Gas Desulfurization Industrial Agitator

Agitator mixers are widely used in the flue gas desulfurization processes, such as limestone FGD system, gypsum FGD system, magnesium oxide FGD system, ammonia FGD system, etc. Usually, side entry agitator mixers are used in absorbers, top entry agitator mixers are used in limestone slurry tanks, filter water tanks, wastewater tanks, reuse water tanks, etc.

Side entry agitator

The arrangement of side entry agitators on the absorption tower plays a decisive role in the uniform distribution of solid particles in slurry and the prevention of solid accumulation. Multiple sets of flue gas desulfurization agitator mixers are evenly arranged on the wall of the absorption tower so that each agitator stirs the same volume of fluid without interference between flow fields. 

distribution of side entry agitator for FGD absorber

distribution of side entry agitator for FGD absorber

structure of side entry agitator for FGD absorber

structure of side entry agitator for FGD absorber

There are three circulation pump inlets and two gypsum discharge pump inlets at the bottom of the absorption tower. Considering the influence of pump inlet, the distribution of agitators should be adjusted appropriately. In the setting of a single agitator, each agitator has a radial angle and a horizontal angle, which deviates from the diameter direction by about 4 ° to 12 ° in the radial direction, and inclines downward about 10 ° in the horizontal direction. If the agitator is installed along the vertical diameter line of the vessel, the slurry between the agitators and near the vessel wall will not be stirred, resulting in precipitation and scaling; if the angle of the agitator is not optimized, the slurry may rotate around the center and precipitate in the central area; only after the optimized arrangement of the agitator can the solid particles in the container be guaranteed Product.

Top entry agitator

Top entry agitator mixers used in limestone slurry tanks, filtrate water tanks, wastewater tanks, reuse water tanks, etc. The top entry agitator mixers design represented by the emergency slurry tank is relatively simple. As long as the agitated materials are suspended from the ground, the carbon steel rubber lining material is generally selected in material selection, which not only reduces the procurement cost but also ensures the mixing effect.

flue gas desulfurization industrial agitator of top entry
installation of top entry agitator
top entry agitator impeller of FGD industry

structure of side entry agitator for FGD absorber

Advantage of CD Flue Gas Desulfurization Industrial Agitator

  1. Replace seal without discharge materials.
  2. Convenient maintenance
  3. High efficiency and saving energy
  4. Safe and reliable
  1. Prevent the solid particles from settling in the slurry tank, and ensure that the slurry can be evenly transported to the next process.
  2. Strengthen the diffusion of oxidation air, promote the oxidation of calcium sulfite, the growth of gypsum crystal and the dissolution of limestone.

Different Industrial Agitator Mixeres

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