Chemical agglomeration wet desulphurization device for reducing generation of fine particles
A technology of chemical agglomeration and wet desulfurization, which is applied in the direction of chemical instruments and methods, separation methods, and dispersed particle separation, can solve the problems of low cost, high investment and operation costs, and difficult practical stages, so as to improve capture, investment and operation. Low cost, effect of changing growth habit
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[0018] Example 1
[0019] Such as figure 1 The chemical agglomeration wet desulfurization device shown to reduce the generation of fine particles includes:
[0020] The desulfurization tower 1, the bottom of the desulfurization tower 1 is equipped with a desulfurization slurry 2, and a flue gas inlet 3 is opened at the same time, and a spray assembly 4 is provided in the desulfurization tower 1 above the flue gas inlet 3, and the spray assembly 4 In order to arrange multi-layer spray heads at intervals from bottom to top, the spray assembly 4 is in communication with the desulfurization slurry 2 through a slurry circulation pump 5, and a first mist eliminator 6 is arranged above the spray assembly 4, and the spray assembly 4 The desulfurization slurry 2 is dispersed and circulated inside the desulfurization tower 1 under the action of the slurry circulation pump 5 to desulfurize the flue gas. After the flue gas passes through the spray assembly 4, it passes through the first demis...
Example Embodiment
[0026] Example 2
[0027] The other parameters of the above method remain unchanged. The agglomerating agent is selected from polymeric aluminum ferrosilicate, the addition amount is 0.5g per liter of desulfurization slurry, and the wetting agent is sodium dodecylbenzene sulfonate, and the addition amount is 0.05g per liter of desulfurization slurry. Desulfurization slurry temperature is 35℃, desulfurization liquid-gas ratio is 12L / m 3 . After the system is stabilized, using the electric scale low-pressure impactor ELPI online test, the mass concentration of fine particles in the net flue gas at the outlet of the desulfurization tower is about 39.3mg / Nm 3 , The concentration of fine particles is 1.5×10 7 1 / cm 3 .
Example Embodiment
[0028] Example 3
[0029] The other parameters of the above method remain unchanged. The agglomeration agent is selected from Sesbania gum, chitosan, and sodium carboxymethyl cellulose, the addition amount is 0.35g per liter of desulfurization slurry, and the wetting agent is sodium dodecylbenzene sulfonate. The addition amount is 0.035g per L of desulfurization slurry, the temperature of desulfurization slurry is 40℃, and the desulfurization liquid-gas ratio is 18L / m 3 . After the system is stabilized, using the electric scale low-pressure impactor ELPI online test, the mass concentration of fine particles in the net flue gas at the outlet of the desulfurization tower is about 37.5mg / Nm 3 , The concentration of fine particles is 1.4×10 7 1 / cm 3 .
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