Place of Origin:
JiangSu, China
Brand Name:
Hivetech
Certification:
ISO9001、ISO14001
Model Number:
SCR
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Selective Catalytic Catalytic Converter SCR Catalyst-Vanadium based SCR
Product advantages:
~Low voltage loss and load
~High sulfur resistance
~High altitude speed design
~Multiple specifications and mesh selection
Introduction to SCR catalyst:
It adopts international advanced technology and high-quality cordierite catalyst carrier, and is coated with composite molecular sieve catalyst to improve the activity stability of the catalyst at high temperature. It can be widely used at 300 -550 degrees, and can be customized according to different working conditions. Commonly used in various gas pit furnaces, diesel generator sets and other high temperature flue gas fields.
NOx oxides are by-products of combustion reactions in air, and these gases are harmful to human health and the environment. The SCR catalysts have honeycomb structures, which can Selective Catalytic Reduction (SCR) of nitrogen oxides (NOx) efficiently in the presence of excess O2 atmosphere. NOx is reduced to N2 and H2O by ammonia (or using urea as precursor) with which is used as a reducing agent.
Hivetech has developed SCR catalysts for meeting NOx emission control both of mobile and stationary applications. Depending on different application scene, Hivetech can provide matched wash-coated products including Fe/zeolite (450~620 oC), Cu/Zeolite (190~550 oC), vanadium-based metal oxides (230~470 oC) and Mn-containing oxide catalysts (130~250 oC).
Customized projects for different gas conditions, alternative projects of other international brands.
| Comparison and Analysis of the Performance of Three Catalysts | |||
| project | Honeycomb catalyst | Plate catalyst | Corrugated catalyst |
| Processing technology | Calcination after uniform extrusion molding | Double side extrusion | Coated |
| Main active materials | Ti-W-V | Ti-Mo-V | Ti-W-V |
| Specific surface area | Large | Medium | Small |
| Volume required under the same conditions | 100 | 1.3 | 1.53-1.76 |
| Anti poisoning ability | Strong | Strong | Medium |
| Security | Burned | Burned | combustion-supporting |
| persistence | good | Strong | Poor |
| Corrosion resistance | Better | Better | Poor |
| Ash prevention ability | General | Better | Poor |
| reliability | Better | Better | General |
| Comprehensive cost | Low | Lower | General |
| Scope of application | Suitable for flue gas environment with ash content of 30g/m3 and low ash viscosity | Flue gas with high ash content and strong ash viscosity | Flue gas environment with low ash content |
| Market share | highest | Higher | Lower |
| Pore density | 70,100,200,300,400 cpsi | 15,20,30,40,50 cell | 30,40,50 cell |
| Bulk density | 550-700 kg/m3 | 450-650 kg/m3 | 350-500 kg/m3 |
| Section size | 150x150 mm | 150x150 mostly | 150x150 mm |
| Module size | Multiple choices | Multiple choices | 466x466mm standard |
Service conditions of catalyst(High temperature molecular sieve SCR catalyst)
1: The best use temperature is 450-600 ℃.
2: Maximum resistance temperature of catalyst: 650 ℃.
3: Service life: ≥ 3 years.
4: Catalyst toxic substances: including but not limited to lead, arsenic, antimony, zinc, calcium, tin, nickel, chromium, potassium and phosphorus. If the content of these elements in the emissions from the inlet of the catalytic reactor alone or jointly exceeds 200 parts per million of the weight of the catalyst surface, sodium, sulfur, etc. exceeds 0.5 percent, or the weight of halogen or halogen compound exceeds 50 ppm, or the weight of sulfur compounds in the atmosphere exceeds 40 ppm, the catalyst life will be shortened, The catalyst life is not guaranteed to be 3 years.
5: The catalyst is a metal or ceramic honeycomb carrier. Pay attention to protection and handle with care during transportation and filling to avoid catalyst damage.
6: When the operating temperature is ≥ 600 ℃, the risk of catalyst deactivation increases; When the temperature is higher than 900 ℃, the coating structure will be damaged, and the catalyst will lose its activity within tens of minutes. When the catalyst is exposed to a higher temperature, there is a risk of ablation of the catalyst.
450 ppm NO, 14%O2, 5%CO2, 5%H2O, GHSV=15000 h-1 ,N2 as balance
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