Method for efficient catalytic reduction regeneration of denitration complexing liquid
A denitrification and complexation technology, applied in the field of environmental pollution control, can solve the problems of high operating cost, influence on industrial promotion, and limit industrial application, etc., and achieve the effect of obvious regeneration effect, low process cost and fast reaction rate
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Embodiment 1
[0038] The Pd-Cu / C catalyst in Example 1 uses activated carbon as a carrier, the mass fraction of palladium is 5%, and the mass fraction of copper is 0%.
[0039] (1) Preparation of Pd-Cu / C catalyst:
[0040] 0.8339g of PdCl 2 Add it to 100ml of dilute hydrochloric acid solution with a concentration of 0.01mol / L, heat to dissolve, and make the volume of the solution slightly larger than the volume of the activated carbon carrier. 10g of activated carbon support impregnated in the precursor PdCl2 In the solution, after stirring and dehydrating, dry in a vacuum drying oven at 100°C for 12h, place in a vacuum tube muffle furnace, burn at 400°C for 2h, add excess hydrazine hydrate after natural cooling, stir fully, and the stirring time is 12h , dehydrated and dried with a rotary evaporator, and dried in a vacuum oven at 80°C for 12 hours before use.
[0041] (2) Regeneration of invalid denitrification complex solution:
[0042] Take 500ml of expired denitrification complex sol...
Embodiment 2
[0046] Pd-Cu / Al in this embodiment 2 2 o 3 The catalyst is based on γ-Al 2 o 3 As the carrier of the catalyst, the mass fraction of palladium is 5%, and the mass fraction of copper is 0%.
[0047] (1) Pd-Cu / Al 2 o 3 Catalyst preparation:
[0048] 0.8339g of PdCl 2 Add it to 100ml of dilute hydrochloric acid solution with a concentration of 0.01mol / L, heat to dissolve, and make the volume of the solution slightly larger than γ-Al 2 o 3 The volume of the carrier. 10g of γ-Al calcined at 500°C for 4h 2 o 3 The support is impregnated with the precursor PdCl 2 In the solution, after stirring and dehydrating, dry in a vacuum drying oven at 100°C for 12h, place in a vacuum tube muffle furnace, burn at 400°C for 2h, add excess hydrazine hydrate after natural cooling, stir fully, and the stirring time is 12h , dehydrated and dried with a rotary evaporator, and dried in a vacuum oven at 80°C for 12 hours before use.
[0049] (2) Regeneration of invalid denitrification compl...
Embodiment 3
[0054] The Pd-Cu / C catalyst in Example 3 uses activated carbon as a carrier, the mass fraction of palladium is 5%, and the mass fraction of copper is 1.5%.
[0055] (1) Preparation of Pd-Cu / C catalyst:
[0056] 0.8339g of PdCl2 was added to 100ml of dilute hydrochloric acid solution with a concentration of 0.01mol / L, heated to dissolve, and 0.5663g of Cu(NO 3 ) 2 ·3H 2 O is dissolved in the above solution, so that the volume of the solution is slightly larger than the volume of the activated carbon carrier. Immerse 10g of activated carbon carrier in the above solution, stir and dehydrate and dry, then dry in a vacuum oven at 100°C for 12h, place in a vacuum tube muffle furnace, burn at 400°C for 2h, add excess hydrazine hydrate after natural cooling, Fully stir, stir for 12 hours, dehydrate and dry with a rotary evaporator, and dry in a vacuum oven at 80°C for 12 hours before use.
[0057] (2) Regeneration of invalid denitrification complex solution
[0058] Take 500ml of...
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