DeNOx SCR

LAB designs and delivers deNOx systems based on Selective Catalytic Reduction (SCR) to reduce nitrogen oxides (NO and NO₂) in flue gases to ultra-low levels. Our own custom-engineered SCR solutions ensure compliance with the strictest environmental regulations, while minimizing reagent consumption and ammonia slip and respecting highest operational reliability.

What is SCR?

SCR (Selective Catalytic Reduction) is a part of flue gas cleaning process where a reducing agent, such as mainly ammonia water or urea, is injected into the flue gas. The mixture passes through a catalyst layer bed where NOx is converted on the catalyst surface into nitrogen (N₂) and water vapor, both harmless to the environment.

Catalytic module

• Up to 95% NOx reduction efficiency
• Works at medium to high temperatures (180–300°C)
• Using highly efficient catalyst in cooperation with well-known produce
• Best solution for installations requiring strict NOx and ammonia emission limits

Goteborg, Sweden

Key Features of LAB’s DeNOx SCR Systems

• Tailor- LAB made design adapted to your flue gas characteristics (temperature, dust and other pollutants content, NOx reduction, flow rate, etc.)
• Flexible reagent choice: ammonia, ammonia water, or urea
• Modular catalyst configuration for catalyst management and optimized lifespan
• Optionally integrated cleaning systems to prevent dust or salt deposit and to limit flue gas pressure drop
• Upstream dedusting system (like ESP or bag house filter)
• Upstream or downstream integration of acid gas removal (dry or wet system), and heat recovery devices
• Low temperature SCR: Catalyst regeneration with flue gas recirculation upstream FGT to avoid pollutant’s peaks at stack

LAB Ammonia Water Distribution Skid

Barcelona, Spain

Benefits at a Glance

• Up to 95% NOx reduction (to low range of BATAEL’s emissions)
• Additionally destroying of dioxins and furans at catalyst
• Very low ammonia slip
• Compact design, even for retrofit projects
• Optimized reagent consumption by CFD modelled reagent injection and distribution
• High catalyst lifespan
• Full integration with LAB’s flue gas treatment systems

Why to Choose LAB?

With decades of experience in turnkey flue gas cleaning systems, LAB combines technical know-how, in-house engineering, and field-proven reliability to deliver tailor-made deNOx SCR solutions to lower NOx emissions in energy producing plants or engines.

Integrated with our systems: SecoLAB ®, BicarLAB ®, VapoLAB ® and wet scrubbers
Installed on operating plants across Europe