Low-temperature SCR denitration catalyst with deliquescence-proof capability, and preparation method thereof
A denitrification catalyst and anti-deliquescence technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve compact catalyst structure, improve physical service life, and not easy to deliquescent damage Effect
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Embodiment 1
[0029] 1) Dry mix. Weigh the dried carrier (titanium dioxide and nano-SiO 2 mixture of nano-SiO 2 The mass percentage is 5%) 400g, manganese oxalate 536g, cerium nitrate 520.8g, ferrous oxalate 144g, zirconium nitrate 101.7g (the manganese oxalate, cerium nitrate, ferrous oxalate, zirconium nitrate do not include the weight of crystal water , the same below), stearic acid 10g, put into the mixer together and dry blend for 20min.
[0030] 2) Granulation. Add 20 g of glycerin to the above solid powder, mix well, use a sprayer to spray an appropriate amount of deionized water, and the solid powder forms a granular form.
[0031] 3) Link particles. Add 50g of glass fiber and 2g of pulp cotton, stir for 15 minutes, and add appropriate amount of deionized water if necessary, subject to the fact that the particles become agglomerated;
[0032] 4) Adjust plasticity. Slowly add 16g of sodium carboxymethylcellulose, stir for 10 minutes and then add 2g of polyethylene oxide to prep...
Embodiment 2
[0037] 1) Dry mix. Weigh the dried carrier (titanium dioxide and nano-SiO 2 mixture of nano-SiO 2 The mass percentage is 10%) 400g, manganese oxalate 536g, cerium nitrate 347.2g, ferrous oxalate 90g, zirconium nitrate 67.8g, stearic acid 10g, put them into the mixer and dry mix them for 20min.
[0038]2) Granulation. Add 20 g of glycerin to the above solid powder, mix well, use a sprayer to spray an appropriate amount of deionized water, and the solid powder forms a granular form.
[0039] 3) Link particles. Add 50g of glass fiber and 2g of pulp cotton, stir for 15 minutes, and add appropriate amount of deionized water if necessary, subject to the fact that the particles become agglomerated;
[0040] 4) Adjust plasticity. Slowly add 16g of sodium carboxymethylcellulose, stir for 10 minutes and then add 2g of polyethylene oxide to prepare a catalyst paste with excellent plasticity.
[0041] 5) The above catalyst paste is aged, extruded, dried and calcined to form the fina...
Embodiment 3
[0044] 1) Dry mix. Weigh the dried carrier (titanium dioxide and nano-SiO 2 mixture of nano-SiO 2 The mass percentage is 8%) 400g, manganese oxalate 536g, cerium nitrate 173.6g, ferrous oxalate 36g, zirconium nitrate 33.9g, stearic acid 20g, put them into the mixer and dry mix them for 20min.
[0045] 2) Granulation. Add 30 g of glycerin to the above solid powder, mix evenly, use a sprayer to spray an appropriate amount of deionized water, and the solid powder is granulated.
[0046] 3) Link particles. Add 60g of glass fiber and 4g of pulp cotton, stir for 15 minutes, and add an appropriate amount of deionized water if necessary, subject to the fact that the particles become agglomerated;
[0047] 4) Adjust plasticity. Slowly add 12g of sodium carboxymethylcellulose, stir for 10 minutes and then add 4g of polyethylene oxide to prepare a catalyst paste with excellent plasticity.
[0048] 5) The above catalyst paste is aged, extruded, dried and calcined to form the final f...
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