Flue gas desulfurization and denitrification adsorbent as well as preparation and usage method thereof
A desulfurization, denitrification, and adsorbent technology, applied in the field of flue gas purification, can solve the problem of less research on adsorbents, and achieve the effects of no secondary pollution, simple equipment operation, and mild synthesis conditions.
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[0037] Example 1
[0038] Take a three-necked flask with a condensing reflux tube on top, equipped with a closed dropping funnel and a stirring device, put tetrabutylammonium bromide and ethylene glycol into the flask, stir, and control the temperature of the solution at 20±2℃, and mix well A tetrabutylammonium bromide-ethylene glycol eutectic solvent is obtained, and the molar ratio of tetrabutylammonium bromide to ethylene glycol is 1:2.
[0039] Take the adsorbent and place it in a bubble-bed reactor. The temperature of the reactor is controlled at 50±2℃, and SO2 is introduced into the reactor. 2 And NO gas for absorption, the residence time of the gas in the adsorbent is 2-6s; the adsorbent with absorption equilibrium is placed in a temperature environment of 100±2℃ for SO 2 And NO desorption experiment. The adsorption equilibrium is reached in 6 minutes, the sulfur capacity S(g) / adsorbent (g) is 0.25, and the nitrate capacity N(g) / adsorbent (g) is 0.026; the equilibrium desorp...
Example Embodiment
[0040] Example 2
[0041] Take a three-necked flask with a condensing reflux tube on top, equipped with a closed dropping funnel and a stirring device, put tetrabutylammonium bromide and ethylene glycol into the flask, stir, and control the temperature of the solution at 20±2℃, and mix well A tetrabutylammonium bromide-ethylene glycol eutectic solvent is obtained, and the molar ratio of tetrabutylammonium bromide to ethylene glycol is 1:5.
[0042] Take the adsorbent and place it in a bubble-bed reactor. The temperature of the reactor is controlled at 50±2℃, and SO2 is introduced into the reactor. 2 And NO gas for absorption, the residence time of the gas in the adsorbent is 2-6s; the adsorbent with absorption equilibrium is placed in a temperature environment of 90-92℃ for SO 2 And NO desorption experiment. The adsorption equilibrium is reached in 9 minutes, the sulfur capacity S (g) / adsorbent (g) is 0.3, and the nitrate capacity N (g) / adsorbent (g) is 0.03; the equilibrium desorp...
Example Embodiment
[0043] Example 3
[0044] Take a three-necked flask with a condensing reflux tube on top, equipped with a sealed dropping funnel and a stirring device, put tetrabutylammonium bromide and ethylene glycol into the flask, stir, and control the temperature of the solution at 20±2℃, and mix well A tetrabutylammonium bromide-ethylene glycol eutectic solvent is obtained, and the molar ratio of tetrabutylammonium bromide to ethylene glycol is 1:10.
[0045] Measure the adsorbent and place it in a bubble-bed reactor. The temperature of the reactor is controlled at 50±2℃, and SO2 is introduced into the reactor. 2 And NO gas for absorption, the residence time of the gas in the adsorbent is 2-6s; the adsorbent with absorption equilibrium is placed in a temperature environment of 100±2℃ for SO 2 And NO desorption experiment. The adsorption equilibrium is reached in 15 minutes, the sulfur capacity S (g) / adsorbent (g) is 0.7, and the nitrate capacity N (g) / adsorbent (g) is 0.05; the equilibrium d...
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