Denitration catalyst manufacturer: Introduction to performance parameters of denitration catalysts
Publishdate：2021-07-16 Views：50
Denitration catalyst manufacturers: Generally speaking, denitration catalysts are customized for the project based on the composition, characteristics, efficiency, and customer requirements of the project flue gas. The performance of catalysts (including selectivity, activity, stability, and regeneration) cannot be directly quantified, but is comprehensively reflected in some parameters, mainly including active temperature, geometric characteristic parameters, mechanical strength parameters, chemical composition content, process performance indicators, etc.
1. Active temperature
The active temperature range of denitration catalysts is an important indicator. The reaction temperature not only determines the reaction rate of reactants, but also determines the reaction activity of catalysts. For V2O5-WO3/TiO2 catalysts, the reaction temperature is mostly set between 280~420 ℃. If the temperature is too low, the reaction speed is slow, which is not conducive to the side reaction of NOx degradation; If the temperature is too high, the phenomenon of high-temperature sintering of catalyst active microcrystals will occur.
2. Mechanical strength parameters
Denitration catalyst manufacturer: mainly reflects the ability of denitration catalysts to resist the impact force and friction generated by gas, withstand the load effect of upper layer catalysts, temperature changes, and phase change stress. There are three indicators for mechanical strength parameters, namely axial mechanical strength, transverse mechanical strength, and wear rate. The first two refer to the weight that a unit area of catalyst can withstand in both axial and lateral directions. The wear rate is the small loss value per unit mass of catalyst under specific conditions determined by certain testing instruments and methods, used to compare the wear resistance of different catalysts.
3. Chemical composition content of denitrification catalysts
Denitration catalyst manufacturer: refers to the mass percentage of active components and carriers, such as V2O5-WO3/TiO2 catalyst. The key to this is the amount that plays a catalytic role, and the ratio of co catalysis to carrier is equally important. The content may vary depending on the situation of different users. In general, V2O5 accounts for 1% to 5%, WO3 accounts for 5% to 10%, and TiO2 accounts for the vast majority of the remaining proportion.
Denitration catalyst manufacturers: Generally speaking, denitration catalysts are customized for the project based on the composition, characteristics, efficiency, and customer requirements of the project flue gas. The performance of catalysts (including selectivity, activity, stability, and regeneration) cannot be directly quantified, but is comprehensively reflected in some parameters, mainly including active temperature, geometric characteristic parameters, mechanical strength parameters, chemical composition content, process performance indicators, etc.
1. Active temperature
The active temperature range of denitration catalysts is an important indicator. The reaction temperature not only determines the reaction rate of reactants, but also determines the reaction activity of catalysts. For V2O5-WO3/TiO2 catalysts, the reaction temperature is mostly set between 280~420 ℃. If the temperature is too low, the reaction speed is slow, which is not conducive to the side reaction of NOx degradation; If the temperature is too high, the phenomenon of high-temperature sintering of catalyst active microcrystals will occur.
2. Mechanical strength parameters
Denitration catalyst manufacturer: mainly reflects the ability of denitration catalysts to resist the impact force and friction generated by gas, withstand the load effect of upper layer catalysts, temperature changes, and phase change stress. There are three indicators for mechanical strength parameters, namely axial mechanical strength, transverse mechanical strength, and wear rate. The first two refer to the weight that a unit area of catalyst can withstand in both axial and lateral directions. The wear rate is the small loss value per unit mass of catalyst under specific conditions determined by certain testing instruments and methods, used to compare the wear resistance of different catalysts.
3. Chemical composition content of denitrification catalysts
Denitration catalyst manufacturer: refers to the mass percentage of active components and carriers, such as V2O5-WO3/TiO2 catalyst. The key to this is the amount that plays a catalytic role, and the ratio of co catalysis to carrier is equally important. The content may vary depending on the situation of different users. In general, V2O5 accounts for 1% to 5%, WO3 accounts for 5% to 10%, and TiO2 accounts for the vast majority of the remaining proportion.
