Simultaneous desulfurization and denitration catalyst without reducing gas and preparation method thereof
A desulfurization, denitrification, and catalyst technology, which is applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of poor resistance to sulfur poisoning and water vapor resistance, and difficulty in removing nitrogen oxides and sulfur oxides , the high cost of electron accelerators, etc., to achieve the effect of low cost, high mechanical strength and simple operation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0022] Weigh 0.115g ammonium metavanadate and 0.23g oxalic acid into a 100mL clean beaker, add distilled water (about 20mL) to dissolve, then add 0.19g copper nitrate, add ammonia water dropwise to the cloudy solution until the solution is uniform. Then weigh 0.124g of nickel nitrate and 0.65g of potassium nitrate respectively, add them, the solution is still in a uniform state, measure its pH between 6-7, add distilled water to 60mL. Finally, 5 g of spherical ZSM-5 molecular sieve carriers were added and immersed in a water bath at 50° C. for 4 hours. Filter after impregnation, put the solid in a crucible, evaporate to dryness at 120°C for 12h, and then bake at 500°C for 6h. Weigh 0.124g of cobalt nitrate and place it in a 100mL beaker, add distilled water to dissolve it, and set the volume to 60mL, add the roasted solid semi-finished catalyst to it, and immerse at 50°C for 4h. Filter after impregnation, put the solid in a crucible, evaporate to dryness at 120°C for 12 hours...
Embodiment 2
[0031] As in Example 1, under the same conditions and preparation method, copper and vanadium were simultaneously impregnated at a concentration of 1% by weight in the impregnating solution at one time to obtain a Cu-V / ZSM-5 catalyst. This catalyzer is formed with the reaction device of embodiment one and feed gas, under the same reaction condition, records following table 2 result:
[0032] Table 2
[0033]
[0034]
Embodiment 3
[0036] As in Example 1, with the same preparation conditions and preparation method, copper, vanadium and tungsten were simultaneously impregnated at a concentration of 1% by weight of the impregnating solution at one time to prepare a Cu-V-W / ZSM-5 catalyst. The catalyst is composed of the same reaction device and raw material gas as in Example 1. Under the same reaction conditions, the reaction tail gas is absorbed by 5% lye or activated at 500°C under the original atmosphere, and then reacted at 350°C. The results are as follows Table 3 results:
[0037] table 3
[0038] Catalyst use time
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More