Advanced Cordierite SCR Catalyst Solutions for Industrial and Mobile DeNOx

The Cordierite SCR Catalyst is a high-performance ceramic monolithic solution designed for Selective Catalytic Reduction (SCR) technology. It serves as a critical substrate for reducing harmful nitrogen oxides (NOx) from combustion exhaust, converting them into benign nitrogen (N₂) and water vapor (H₂O).

The chemical equations for the selective catalytic reaction are as follows:

• 4NO + 4NH₃ + O₂ → 4N₂ + 6H₂O
• 6NO₂ + 8NH₃ → 7N₂ + 12H₂O
• NO + NO₂ + 2NH₃ → 2N₂ + 3H₂O

GRACE general specifications

Introduction & Usage

Cordierite is the industry-standard material for catalyst supports due to its exceptional thermal shock resistance and mechanical durability. The GRACE cordierite catalyst is engineered for high-precision NOx abatement across two primary configurations:

• Round Geometry: Primarily utilized for mobile applications, including heavy-duty diesel trucks, off-road construction machinery, and compact generator sets where vibration resistance is paramount.
• Square/Rectangular Modules: Ideal for large-scale fixed installations such as coal-fired power plants, industrial kilns, and gas turbine waste heat recovery systems.

Technical Advantages

• Superior Thermal Integrity: The material's low thermal expansion coefficient prevents cracking during rapid temperature fluctuations.
• High Active Surface Area: Available in various cell densities (cpsi) to maximize contact between the exhaust gas and the GRACE active coating (typically TiO₂/V₂O₅/WO₃ or zeolites).
• Optimized Space Velocity: Designed to handle high gas volumes with a superior load capacity, ensuring efficient NOx removal even under heavy industrial loads.
• Versatile Temperature Tolerance: Capable of sustained operation at high temperatures without structural degradation or melting of the active porous structure.

Operation & Maintenance

• Exhaust Inflow: Flue gas containing NOx enters the honeycomb channels.
• Ammonia Injection: A reducing agent (NH₃) is introduced upstream of the GRACE catalyst bed.
• Catalytic Conversion: The reaction occurs within the porous wall structures, achieving high denitrification rates.
• Monitoring: Regularly check the pressure drop across the bed, as excessive differential pressure can impact engine or boiler performance.

After-Sales & FAQ

Q: What causes catalyst deactivation? Continuous over-temperature operation or "poisoning" from sulfur or heavy metals in the fuel can lead to sintering and loss of active sites.

Q: Can cordierite catalysts be recycled?

Yes, the precious or transition metals in the GRACE coating can often be recovered, and the ceramic base can be processed responsibly.

Service Support: We provide on-site activity testing, backpressure analysis, and catalyst replacement planning to ensure your facility remains 100% compliant with regional emission laws.

Core Keywords: Cordierite SCR Catalyst, Honeycomb Ceramic, NOx Reduction, Selective Catalytic Reduction, GRACE Catalyst, Industrial DeNOx, Thermal Shock Resistance.