Product Overview
SCR Technology Overview
Selective Catalytic Reduction (SCR) is an effective technology for reducing NOx emissions from industrial flue gas.
At operating temperatures of 270–400°C, ammonia (NH₃) reacts with nitrogen oxides (NOx) over the catalyst surface, converting them into nitrogen (N₂) and water (H₂O).
Catalyst Composition and Manufacturing Process
SCR catalysts promote selective reactions between NOx and the reducing agent under controlled temperatures.
The commonly used V₂O₅–WO₃ (MoO₃) / TiO₂ formulation provides stable activity, thermal resistance, and durability.
Catalysts are produced through mixing, extrusion, drying, and calcination to ensure consistent structure and performance.
Honeycomb Structure and Customization
Our honeycomb catalysts are designed to adapt to different flue gas conditions and dust levels.
Multiple cell pitches (such as 9×9, 18×18, 25×25, and 50×50) are available, optimized according to flue gas composition and allowable pressure drop.
Key Features and Performance Advantages
High NOx removal efficiency
Low SO₂ oxidation rate (down to 1%)
Low NH₃ slip during operation
Strong resistance to poisoning and abrasion
Long service life up to 24,000 hours
High surface area with compact structure
Customized formulations for different temperature ranges
Product Parameters
Key Advantages
| Hole Number (PCS) | Cross Section (mm) | Hole Dia. (mm) | Wall Thickness (mm) | Catalyst Pitch (mm) | Open Porosity (%) | Specific Surface Area (m²/m³) | Applicable Scope |
|---|---|---|---|---|---|---|---|
| 15×15 | 150×150 | 8.45 | 1.35 | 9.8 | 71.4 | 338 | Coal fired unit, high smoke dust |
| 16×16 | 150×150 | 8 | 1.2 | 9.2 | 72.82 | 383 | |
| 18×18 | 150×150 | 7.1 | 1.1 | 8.2 | 72.6 | 409 | Coal fired unit, medium dust |
| 20×20 | 150×150 | 6.4 | 1 | 7.4 | 72.82 | 469 | |
| 21×21 | 150×150 | 6.1 | 0.95 | 7.05 | 72.93 | 478 | Coal fired unit, low smoke dust |
| 22×22 | 150×150 | 5.8 | 0.9 | 6.7 | 72.36 | 499 | |
| 25×25 | 150×150 | 5 | 0.9 | 5.9 | 69.44 | 577 | Coal fired unit, very low dust |
| 30×30 | 150×150 | 4.1 | 0.8 | 4.9 | 67.24 | 693 | Oil fired unit, very low dust |
| 35×35 | 150×150 | 3.65 | 0.55 | 4.2 | 72.53 | 795 | |
| 40×40 | 150×150 | 3.2 | 0.5 | 3.7 | 72.82 | 910 | Gas fired unit |
| 45×45 | 150×150 | 2.78 | 0.5 | 3.28 | 69.56 | 1000 | |
| 55×55 | 150×150 | 2.2 | 0.5 | 2.7 | 65.07 | 1275 | |
| Unit catalyst size: 150×150×(length 300-1350) mm. | |||||||
Stable NOx Conversion Efficiency
Maintains consistent NOx removal performance across a wide operating temperature range under industrial flue gas conditions.
Low Pressure Drop Design
Optimized honeycomb structure ensures efficient gas flow while minimizing system pressure loss.
Resistance to Dust and Sulfur
Designed to withstand high dust loading and sulfur-containing flue gas, reducing catalyst deactivation risks.
Long Operational Service Life
Robust catalyst formulation and structure support long-term operation with reduced replacement frequency.
Typical Applications
Supply Capacity and Customization
We offer customized catalyst designs based on flue gas composition,operating temperature, and space limitations to ensure optimal performance for each project.
Quality Control and Certification
