Carbide slag-based flue gas desulfurization method
A calcium carbide slag and flue gas technology, which is applied in the field of flue gas desulfurization, can solve the problems of large solid particles, low adsorption capacity, and increased usage of desulfurizers, and achieve the effects of reduced desulfurization costs, high-efficiency desulfurization, and reduced usage
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[0055] Example 1
[0056] (1) modulation of desulfurizer composition of the present invention:
[0057] Mix the components uniformly according to the following formula to obtain the desulfurizer composition.
[0058] Table 1. Desulfurizer composition formula
[0059]
[0060] (2) Flue gas desulfurization process:
[0061] 1. Pulping:
[0062] The prepared desulfurizer composition is added to water for pulping, and after aging, desulfurizer slurry is formed, and is kept in the slurry tank for use.
[0063] 2. Flue gas desulfurization:
[0064] The sulfur dioxide in the flue gas reacts with the desulfurizer slurry in the desulfurization tower to remove the sulfur dioxide in the flue gas. The parameters of the flue gas entering the desulfurization tower are shown in Table 2.
[0065] Table 2. FGD inlet parameters
[0066] serial number
[0067] 3. Slurry
[0068] When the pH of the slurry formed after desulfurization was 6.5, the slurry was discharged.
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Example
[0077] Examples 2 to 4
[0078] Flue gas desulfurization and magnesium sulfate production were carried out under the same conditions as in Example 1, except that the formulations in each desulfurizer composition were adjusted according to Table 3. The desulfurization effect is shown in Table 4.
[0079] Table 3. Recipe of each desulfurizer composition
[0080] Element
Example Embodiment
[0081] Example 5
[0082] The other conditions were the same as in Example 1, except that the desulfurization slurry started to be discharged when the pH value reached 5.8. The desulfurization effect is shown in Table 4.
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