Preparation method of wide-temperature range rare earth-based composite oxide denitration catalyst
The technology of a composite oxide and a denitration catalyst is applied in the field of a honeycomb ceramic catalyst in the field of environmental protection technology, and can solve problems such as environmental pollution, catalyst failure, equipment corrosion, etc. The effect of shortening the activation time
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Embodiment 1
[0058] A preparation method of a wide-temperature rare earth-based composite oxide denitration catalyst, using titanium dioxide and montmorillonite as carriers, ammonium metatungstate, ammonium metavanadate, cerium nitrate, and manganese oxide as active components, accompanied by auxiliary materials, It is made by kneading, aging, kneading, molding, drying and roasting; wherein the auxiliary materials include monoethanolamine, citric acid, ammonia water, lactic acid, stearic acid, glass fiber, wood pulp, hydroxypropyl methylcellulose, polyester Ethylene Oxide, Citric Acid and Water.
[0059] Specific programs include:
[0060] (1) Preparation of active components: Add 45kg of water into the dissolving tank, add 8kg of monoethanolamine into the dissolving tank, when the temperature reaches 85°C, add 6kg of ammonium metavanadate into the dissolving tank and stir evenly, then Add 30kg of ammonium metatungstate and 8kg of manganese oxide into the dissolution tank and stir evenly ...
Embodiment 2
[0074] (1) Preparation of active components: Add 55kg of water into the dissolving tank, add 12kg of monoethanolamine into the dissolving tank, when the temperature reaches 95°C, add 10kg of ammonium metavanadate into the dissolving tank and stir evenly for 20 minutes , and then 40kg of ammonium metatungstate and 12kg of manganese oxide were added to the dissolution tank at intervals of 12 minutes and stirred evenly for 50 minutes until all dissolved to obtain ammonium metatungstate and ammonium metavanadate active solution;
[0075] 55 liters of water are added to the active dissolving tank, 7kg of citric acid is added to the dissolving tank and stirred evenly for 6 minutes, then 6kg of cerium nitrate is added in the dissolving tank and after being completely dissolved, the cerium nitrate active solution is obtained;
[0076] (2) Mixing process:
[0077] Primary mixing: Add 400kg of titanium dioxide and 40kg of montmorillonite into the mixer; then add 3kg of stearic acid, ...
Embodiment 3
[0090] A preparation method of a wide-temperature rare earth-based composite oxide denitration catalyst uses titanium dioxide (titanium dioxide) and montmorillonite as the carrier, and the active component W / Mu-V-Ce (tungsten / manganese-vanadium-cerium), after mixing It is made by refining, kneading, aging, shaping, drying and roasting.
[0091] Raw material preparation:
[0092] As for the carrier material, weigh 644.5kg of titanium dioxide (divided into three parts: 369.5kg, 105kg, and 135kg), and weigh 35kg of montmorillonite.
[0093] Active component raw materials: Weigh 35kg of ammonium metatungstate, 8kg of ammonium metavanadate, 5kg of cerium nitrate and 10kg of manganese oxide; weigh 9kg of monoethanolamine solution and 6kg of citric acid.
[0094] Active component preparation: Add 50kg of water into the active dissolving tank; then add 9kg of monoethanolamine into the dissolving tank, when the temperature reaches 90°C, add 8kg of ammonium metavanadate into the dissol...
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