Method for preparing SCO denitration catalyst by virtue of plasma method
A denitration catalyst and plasma technology, applied in the field of denitration catalysts, can solve the problems of poor catalytic performance, easy agglomeration of catalysts, and inability to exert the advantages of SCO denitration, and achieve the effects of poor crystallinity, uniform grains, and increased ratio.
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Embodiment 1
[0031] The method for preparing the SCO denitration catalyst by the plasma method in this embodiment includes the following steps:
[0032] Step 1. The lignite particles with a particle size of 1mm~2mm are screened out by a screen, and then placed in a tube furnace and roasted at a temperature of 750°C for 3 hours to obtain pyrolysis coke;
[0033] Step 2: Immerse the pyrolysis coke described in Step 1 in a manganese nitrate solution by an equal volume immersion method to obtain pyrolysis coke impregnated with manganese nitrate; the mass percentage concentration of the manganese nitrate solution is 20%; the immersion time Both are 24h;
[0034] Step 3: Immerse the pyrolysis coke impregnated with manganese nitrate in step 2 in the cobalt nitrate solution by an equal volume immersion method to obtain pyrolysis coke impregnated with manganese nitrate and cobalt nitrate; the mass percentage concentration of the cobalt nitrate solution is 21.7%; the dipping time is 24h;
[0035] Step 4. T...
Embodiment 2
[0038] The preparation method of this embodiment is the same as that of embodiment 1, except that the mass percentage concentration of the cobalt nitrate solution in step 3 is 18.7%.
[0039] The SCO denitration catalyst prepared in this embodiment is composed of the following raw materials in mass percentages: 8% of manganese oxide, 5% of cobalt oxide, and 87% of pyrolysis coke.
Embodiment 3
[0041] The preparation method of this embodiment is the same as that of embodiment 1, except that the mass concentration of the cobalt nitrate solution in step 3 is 27.7%.
[0042] The SCO denitration catalyst prepared in this embodiment is composed of the following raw materials with mass percentages: 8% of manganese oxide, 10% of cobalt oxide, and 82% of pyrolysis coke.
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