Low-temperature water-resistant and sulfur-resistant denitration catalyst as well as preparation method and application thereof
A denitration catalyst and low temperature technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of low temperature sulfur poisoning, water poisoning inactivation, etc., to reduce the reduction of specific surface area and improve the denitration efficiency. , The effect of solving the sharp decline of low temperature poisoning activity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0018] Example 1:
[0019] 1. Preparation of the catalyst: add 0.01 mol ammonium metavanadate, 0.03 mol oxalic acid and 0.03 mol cerium nitrate hexahydrate to 200 mL of deionized water, stir well and disperse to form a mixed solution; then add 0.005 mol ammonium heptamolybdate and 0.01 mol of ammonium phosphate, stir and dissolve uniformly; then add 10 g of titanium dioxide carrier to the above mixed solution, stir and evaporate to dryness at 80°C; collect the evaporated product and calcinate at 500°C for 3 hours to obtain a finished catalyst.
[0020] 2. Catalyst performance test: the specific surface area of the catalyst is 120 m 2 / g, measured by Tristar II 3020 automatic specific surface area and pore analyzer. Take 0.5 g of the prepared catalyst and put it into a fixed-bed quartz tube reactor. The inner diameter of the quartz tube = 0.8 cm. The simulated flue gas is composed of NO, NH 3 , O 2 And N 2 Composition, of which NO 1000 ppm, NH 3 1000 ppm, O 2 3 %, airspeed 40,000...
Example Embodiment
[0022] Example 2:
[0023] 1. Preparation of the catalyst: add 0.01 mol ammonium metavanadate and 0.04 mol oxalic acid to 200 mL of deionized water, stir and disperse thoroughly to form a mixed solution; then add 0.002 mol ammonium metatungstate, 0.01 mol nickel nitrate and 0.01 mol phosphoric acid respectively , Stir and dissolve uniformly; then add 10 g of the titanium dioxide carrier into the above mixed solution, stir and evaporate to dryness at 80°C; collect the evaporated product and calcinate at 350°C for 3 hours to obtain the finished catalyst.
[0024] 2. Catalyst performance test: the specific surface area of the catalyst is 145 m 2 / g, measured by Tristar II 3020 automatic specific surface area and pore analyzer. Take 0.5 g of the prepared catalyst and put it into a fixed-bed quartz tube reactor. The inner diameter of the quartz tube = 0.8 cm. The simulated flue gas is composed of NO, NH 3 , O 2 And N 2 Composition, where NO 500 ppm, NH 3 500 ppm, O 2 3%, airspeed 30,...
Example Embodiment
[0026] Example 3:
[0027] 1. Preparation of the catalyst: add 0.01mol ammonium metavanadate, 0.03mol oxalic acid and 0.005mol cerium nitrate hexahydrate to 200 mL of deionized water, stir and disperse to form a mixed solution; then add 0.002mol sodium tungstate and 0.01 respectively mol zirconium sulfate and 0.01 mol ammonium dihydrogen phosphate are stirred to dissolve uniformly; then 10 g of titanium dioxide carrier is added to the above mixed solution, stirred and evaporated to dryness at 80°C; the evaporated product is collected and calcined at 550°C for 3 hours to obtain a finished catalyst.
[0028] 2. Catalyst performance test: the specific surface area of the catalyst is 105 m 2 / g, measured by Tristar II 3020 automatic specific surface area and pore analyzer. Take 0.5 g of the prepared catalyst and put it into a fixed-bed quartz tube reactor. The inner diameter of the quartz tube = 0.8 cm. The simulated flue gas is composed of NO, NH 3 , O 2 And N 2 Composition, of whic...
PUM
Property | Measurement | Unit |
---|---|---|
Specific surface area | aaaaa | aaaaa |
Specific surface area | aaaaa | aaaaa |
Specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap