Low-temperature coke oven flue gas desulfurizing and denitrifying process
A technology for desulfurization and denitrification and flue gas, which is applied in the field of air pollution control, can solve the problems of harsh treatment process conditions, low efficiency, and immature process technology, and achieve the effects of saving desulfurization and denitrification costs, low prices, and improving desulfurization and denitrification efficiency.
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Embodiment 1
[0033] A coke oven flue gas low-temperature desulfurization and denitrification process, the process includes the following methods:
[0034] (1) Preparation of SCR catalyst:
[0035] a) Disperse pottery clay, polymethyl methacrylate, and sodium silicate in deionized water, mix them evenly, and then put them into a mold for compression molding under a pressure of 10 MPa, and dry them at 110°C for 15 hours to obtain a dry product, wherein pottery clay, poly The mass ratio of methyl methacrylate to sodium silicate is 15:8:5;
[0036] b) Calcinate the dried product obtained in step a) at 900°C for 3 hours, take it out and cool it to room temperature naturally, then pulverize and sieve to a particle size of 10-20 mesh to obtain a granular substance, soak the obtained granular substance in mass In a nitric acid solution with a concentration of 20%, soak at 90°C for 2.2 hours, filter, wash with deionized water until neutral, and dry to obtain a nitric acid-treated powder;
[0037]...
Embodiment 2
[0042] A coke oven flue gas low-temperature desulfurization and denitrification process, the process includes the following methods:
[0043] (1) Preparation of SCR catalyst:
[0044] a) Disperse pottery clay, polymethyl methacrylate, and sodium silicate in deionized water, mix them evenly, then put them into a mold for compression molding under a pressure of 30 MPa, and dry them at 110°C for 15 hours to obtain a dry product, wherein pottery clay, poly The mass ratio of methyl methacrylate to sodium silicate is 20:10:5;
[0045] b) Calcinate the dried product obtained in step a) at 1200°C for 1 hour, take it out and cool it to room temperature naturally, then crush and sieve to a particle size of 10-20 mesh to obtain a granular substance, soak the obtained granular substance in mass In a nitric acid solution with a concentration of 50%, soak at 70°C for 1.5h, filter, wash with deionized water until neutral, and dry to obtain a nitric acid-treated powder;
[0046]c) Dissolve ...
Embodiment 3
[0051] A coke oven flue gas low-temperature desulfurization and denitrification process, the process includes the following methods:
[0052] (1) Preparation of SCR catalyst:
[0053] a) Disperse pottery clay, polymethyl methacrylate, and sodium silicate in deionized water, mix them evenly, and then put them into a mold for compression molding under a pressure of 15MPa, and dry them at 110°C for 11 hours to obtain a dry product, wherein pottery clay, poly The mass ratio of methyl methacrylate to sodium silicate is 16:8.5:5;
[0054] b) Calcinate the dried product obtained in step a) at 1000°C for 2.5h, take it out and cool it to room temperature naturally, then pulverize and sieve to a particle size of 10-20 mesh to obtain a granular substance, soak the obtained granular substance in In a nitric acid solution with a mass concentration of 30%, soak at 85°C for 2 hours, filter, wash with deionized water until neutral, and dry to obtain a nitric acid-treated powder;
[0055] c)...
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