A kind of preparation method of monolithic CO reduction denitration catalyst
A denitration catalyst and integrated technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve problems such as air pollution and huanglong, and achieve the effect of improving use efficiency
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Embodiment 1
[0024] (1) The particle size of activated carbon is 500 mesh, polyacrylamide is used as the binder, the precursor of the active component is a mixture of ferric nitrate / chromium nitrate, the slurry is made by adding water, and pressed into a plate type; the material ratio is activated carbon : polyacrylamide: active component precursor: ceramic powder: water = 0.5: 5.0: 6.5: 75: 11.7;
[0025] (2) Put the spherical particles in the furnace, heat up at a rate of 10°C / min and keep the temperature constant to 500°C for calcination. The calcination time is 240min. During this period, a mixed gas of nitrogen and air is introduced to control the O in the mixed gas. 2 The concentration is 2.0-4.0%. During this period, the nitrate decomposes to produce NOx, the activated carbon powder is oxidized and converted into CO, and the two gases undergo a redox reaction under the action of the catalyst to generate CO 2 and N 2 .
[0026] The concentrations of CO and NOx in the tail gas prod...
Embodiment 2
[0028] (1) The particle size of activated carbon is 900 mesh, polymethacrylamide is used as the binder, the precursor of the active component is a mixture of nickel nitrate and copper nitrate, the slurry is made by adding water, and extruded into a honeycomb shape; the material The ratio is activated carbon: polymethacrylamide: active component precursor: ceramic powder: water = 1.2: 7.0: 10: 70: 11.8;
[0029] (2) Put the honeycomb precursor in the furnace, heat up at a rate of 10°C / min and keep the temperature at 400°C for calcination. The calcination time is 360min. During the period, a mixed gas of helium and air is introduced to control the O in the mixed gas. 2 The concentration is 2.0-4.0%. During this period, the nitrate decomposes to produce NOx, the activated carbon powder is oxidized and converted into CO, and the two gases undergo a redox reaction under the action of the catalyst to generate CO 2 and N 2 .
[0030] The concentrations of CO and NOx in the tail ga...
Embodiment 3
[0032] (1) The particle size of activated carbon is 200 mesh, polymethacrylamide is used as binder, the precursor of active component is a mixture of nickel nitrate and copper nitrate, with cerium nitrate as auxiliary agent, water is added to make slurry, and Extruded into a honeycomb shape; the material ratio is activated carbon: polymethacrylamide: active component precursor: cerium nitrate: ceramic powder: water=1.8:7.0:10:1.5:69.7:10;
[0033] (2) Put the honeycomb precursor in the furnace, heat up at a rate of 10°C / min and keep the temperature constant to 450°C for calcination. The calcination time is 360min. During the period, a mixed gas of argon and air is introduced to control the O in the mixed gas. 2 The concentration is 2.0-4.0%. During this period, the nitrate decomposes to produce NOx, the activated carbon powder is oxidized and converted into CO, and the two gases undergo a redox reaction under the action of the catalyst to generate CO 2 and N 2 .
[0034] Th...
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