The Bühler Denox-MB DeNOx Sample Conditioning System is a specialized conditioning and extraction unit engineered by Bühler Technologies GmbH (Germany)—a global leader in industrial gas analysis preparation technology. This system is specifically designed for Continuous Emission Monitoring Systems (CEMS) installed at DeNOx process locations utilizing Selective Catalytic Reduction (SCR) or Selective Non-Catalytic Reduction (SNCR) technologies.

In DeNOx plant operations, accurately monitoring Nitrogen Oxides (NOx) and unreacted Ammonia leakage (NH3 slip) is critical for optimizing reagent injection and complying with stringent environmental regulations. However, the simultaneous presence of Ammonia (NH3) and Sulfur Trioxide (SO3) in flue gas easily forms sticky Ammonium Bisulfate (ABS) salts when temperatures drop below 200°C–220°C, causing severe sampling system clogging. The Bühler Denox-MB completely resolves this issue by incorporating integrated extraction modules, strictly controlled high-temperature heating, and an automated pneumatic blowback (backpurge) cleaning mechanism.

Engineered as a compact mounting board (MB), the Bühler Denox-MB allows seamless integration into existing gas analysis sample lines, simplifying installation, operation, and routine maintenance. All wetted parts are crafted from high-grade corrosion-resistant materials (such as SS316Ti stainless steel, Ceramic, and PTFE), ensuring long-term durability and reliable 24/7 continuous measurement accuracy.

• Manufacturer: Bühler Technologies GmbH
• Country of Origin: Germany
• Product Series: DeNOx Sample Conditioning Board/System
• Model: Denox-MB
• Measurement Applications: Analysis of NOx, SO2, CO, O2, and Ammonia Slip (NH3 Slip) in DeNOx (SCR/SNCR) processes
• Controlled Heating Temperature: Maintained continuously between 180°C to 200°C (392°F) to prevent Ammonium Bisulfate (ABS) salt formation
• Maximum Inlet Sample Gas Temperature: Up to 600°C (1112°F) (Depending on optional sampling tube selection)
• Ambient Temperature Range: -20°C to +60°C
• Maximum Operating Pressure: 6 bar (87 psi)
• Wetted Materials: Stainless Steel 1.4571 (SS316Ti), Ceramic, PTFE, FKM
• Integrated Filter Element: Ceramic or SS316L Stainless Steel filter element, standard pore sizes 2 µm / 5 µm
• Blowback Mechanism: Integrated automated pneumatic backpurge system for online filter element cleaning
• Calibration Port: Integrated test gas inlet for system leak checks and analyzer calibration
• Power Supply: 115V AC or 230V AC, 50/60 Hz
• Power Consumption: 400W – 800W (Depending on integrated heating elements)
• Ingress Protection Rating: IP55 / IP65 (Suitable for outdoor industrial installation)