Flue gas purification device and method combining photo-catalytic oxidization and double cyclic absorption
A photocatalytic oxidation and flue gas purification technology, applied in the field of flue gas purification, can solve the problems of less control, high energy consumption, waste of resources, etc.
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Embodiment 1
[0080] The first-stage absorption liquid: the mass concentration of potassium humate is 15wt%, and the pH is 12.
[0081] The second-stage absorption liquid: the mass concentration of KOH is 3wt%, and the pH is 10.
[0082] Liquid composite oxidant: H 2 o 2 and K 2 S 2 o 8 The mass concentration ratio is 30:10, and the pH is 4.5.
[0083] The reaction conditions of the flue gas purification system with photocatalytic oxidation combined with double-cycle absorption are shown in Table 2.
[0084] Table 2
[0085]
[0086]
[0087] The flue gas is purified according to the above conditions, and it is detected that the desulfurization efficiency reaches 99%, the denitrification efficiency reaches 86%, the mercury removal efficiency reaches 91%, and the decarbonization efficiency is 46%.
Embodiment 2
[0089] The first-stage absorption liquid: the mass concentration of potassium humate is 20wt%, and the pH is 13.
[0090] The second-stage absorption liquid: the mass concentration of KOH is 1wt%, and the pH is 9.
[0091] Liquid composite oxidant: H 2 o 2 and K 2 S 2 o 8 The mass concentration ratio is 30:5, and the pH is 5.
[0092] The reaction conditions of the flue gas purification system with photocatalytic oxidation combined with double-cycle absorption are shown in Table 3.
[0093] table 3
[0094]
[0095]
[0096] The flue gas is purified according to the above conditions, and it is detected that the desulfurization efficiency reaches 98%, the denitrification efficiency reaches 85%, the mercury removal efficiency reaches 90%, and the decarbonization efficiency is 45%.
Embodiment 3
[0098] The first-stage absorption liquid: the mass concentration of potassium humate is 18wt%, and the pH is 12.5.
[0099] The second-stage absorption liquid: the mass concentration of KOH is 2wt%, and the pH is 9.
[0100] Liquid composite oxidant: H 2 o 2 and K 2 S 2 o 8 The mass concentration ratio is 20:10, and the pH is 6.
[0101] The reaction conditions of the flue gas purification system with photocatalytic oxidation combined with double-cycle absorption are shown in Table 4.
[0102] Table 4
[0103]
[0104]
[0105] The flue gas is purified according to the above conditions, and it is detected that the desulfurization efficiency reaches 98%, the denitrification efficiency reaches 88%, the mercury removal efficiency reaches 92%, and the decarbonization efficiency is 46%.
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