High-activity water-resistant sulfur-resistant low-temperature SCR denitration catalyst and preparation method thereof
A denitrification catalyst and high activity technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low denitrification activity and complicated preparation process, and achieve high denitrification efficiency, simple process and reliable conditions control effect
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[0037] In one embodiment, the preparation method at least includes the following steps:
[0038] Step 1, weighing each raw material according to the above ratio, mixing the weighed titanium dioxide and molecular sieve evenly to obtain mixture A;
[0039] Step 2, dissolving the weighed cerium nitrate and europium nitrate in water, and mixing uniformly to obtain mixed solution B;
[0040] Step 3, uniformly spray the mixed solution B onto the mixture A, perform ultrasonic treatment at the same time, then dry at 60-95°C to constant weight, and grind to an average particle size of 5-30 μm to obtain a mixture C;
[0041] Step 4, mix the mixture C with the weighed ammonium metavanadate-monoethanolamine solution, nickel-tin composite oxide, reinforcing agent, pore-forming agent, binder and lubricant, add water, and stir evenly to obtain mud Material D;
[0042] Step 5, extruding the mud material D into strip-shaped mud material E;
[0043] Step 6, extruding the strip-shaped sludge ...
Embodiment 1
[0053] This embodiment provides a high-activity water-resistant and sulfur-resistant low-temperature SCR denitrification catalyst, including the following raw material components in parts by mass:
[0054] 50 parts of anatase titanium dioxide, 25 parts of ZSM-5 molecular sieve, 8 parts of ammonium metavanadate-monoethanolamine solution, 3 parts of cerium nitrate, 2.5 parts of europium nitrate, 3.5 parts of nickel-tin composite oxide, 4.1 parts of short glass fiber, 0.5 parts of cotton pulp, 0.8 parts of 30% silica sol, 0.8 parts of polyethylene glycol, 0.5 parts of CMC, 0.5 parts of PEO and 0.8 parts of stearic acid.
[0055] Among them, the particle size of the nickel-tin composite oxide is less than 1 μm, and the diameter of the short glass fiber is 1-3 mm.
[0056] In one embodiment, the preparation method at least includes the following steps:
[0057] Step 1, weighing each raw material according to the above ratio, mixing the weighed titanium dioxide and molecular sieve ...
Embodiment 2
[0066] This embodiment provides a high-activity water-resistant and sulfur-resistant low-temperature SCR denitrification catalyst, including the following raw material components in parts by mass:
[0067] 12 parts of anatase titanium dioxide, 45 parts of ZSM-5 molecular sieve, 10 parts of ammonium metavanadate-monoethanolamine solution, 7.5 parts of cerium nitrate, 6 parts of europium nitrate, 4.8 parts of nickel-tin composite oxide, 7.5 parts of short glass fiber, 1 part of wood pulp, 1.8 parts of 30% silica sol, 1 part of polyethylene glycol, 1 part of CMC, 1 part of PEO and 1.4 parts of stearic acid.
[0068] Among them, the particle size of the nickel-tin composite oxide is less than 1 μm, and the diameter of the short glass fiber is 1-3 mm.
[0069] In one embodiment, the preparation method at least includes the following steps:
[0070] Step 1, weighing each raw material according to the above ratio, mixing the weighed titanium dioxide and molecular sieve evenly to obt...
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