Ceramic membrane denitration and dioxin removal catalyst taking sludge and steel slag as raw materials and preparation method thereof
A catalyst and ceramic membrane technology, which is applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem that particulate matter easily blocks catalyst pores, hinders the development and application of simultaneous denitration and dedioxin catalysts, etc. Achieve excellent redox performance, excellent oxygen storage and release performance, and efficient catalytic removal.
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[0031] Example 1
[0032] (1) Raw material crushing
[0033] After the steel slag and metatitanic acid powder are crushed by a ball mill, they are homogenized through a 100-mesh standard sieve for use;
[0034] (2) Ingredients and granulation
[0035] Weigh 20g of steel slag powder and 50g of metatitanic acid powder and stir evenly, then weigh 20g of domestic sludge and 10g of polyvinyl alcohol solution and mix with the above powder for grinding and granulation;
[0036] (3) Forming and calcination
[0037] Weigh 10g of the pelletized mud into the mold and pressurize it to 4MPa. After maintaining the pressure for 2 minutes, the sample is taken out, and the green body forming is repeated 10 times to obtain 10 ceramic membrane green bodies with a green body diameter of 25mm. Placed in a muffle furnace and calcined at 1000°C for 4 hours to obtain a ceramic membrane carrier;
[0038] (4) Preparation of composite solution of active component and co-catalyst precursor
[0039] Weigh 9.722g ammo...
Example Embodiment
[0044] Example 2:
[0045] (1) Raw material crushing
[0046] After the steel slag and metatitanic acid powder are crushed by a ball mill, they are homogenized through a 100-mesh standard sieve for use;
[0047] (2) Ingredients and granulation
[0048] Weigh 10g of steel slag powder and 60g of metatitanic acid powder and stir evenly, then weigh 20g of domestic sludge and 10g of polyvinyl alcohol solution and mix with the above powder for grinding and granulation;
[0049] (3) Forming and calcination
[0050] Weigh 10g of the pelletized mud and add it to the mold to pressurize to 6MPa. After the pressure is maintained for 2 minutes, the sample is taken out, and the green body forming is repeated 10 times to obtain 10 ceramic film blanks with a diameter of 25mm. Placed in a muffle furnace and calcined at 1200°C for 4 hours to obtain a ceramic membrane carrier;
[0051] (4) Preparation of composite solution of active component and co-catalyst precursor
[0052] Weigh 24.680g ammonium metatun...
Example Embodiment
[0057] Example 3:
[0058] (1) Raw material crushing
[0059] After the steel slag and metatitanic acid powder are crushed by a ball mill, they are homogenized through a 100-mesh standard sieve for use;
[0060] (2) Ingredients and granulation
[0061] Weigh 20g of steel slag powder and 60g of metatitanic acid powder and stir evenly, then weigh 10g of domestic sludge and 10g of polyvinyl alcohol solution and mix with the above powder for grinding and granulation;
[0062] (3) Forming and calcination
[0063] Weigh 10g of the pelletized mud and put it into the mold to pressurize to 6MPa. After maintaining the pressure for 2 minutes, the sample is taken out, and the green body forming is repeated 10 times to obtain 10 ceramic membrane green bodies with a green body diameter of 25mm. Placed in a muffle furnace and calcined at 1000°C for 4 hours to obtain a ceramic membrane carrier;
[0064] (4) Preparation of composite solution of active component and co-catalyst precursor
[0065] Weigh 9.7...
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