Aqueous Ammonia Injection Skid by Premix Technologies: Precision NOx Emission Control
Introduction: Reducing NOx Emissions with Precise Ammonia Injection
Selective catalytic reduction (SCR) systems are critical in power plants, cement plants, and industrial facilities to reduce nitrogen oxide (NOx) emissions in flue gas streams, ensuring compliance with stringent environmental regulations. Aqueous ammonia (typically 19-29% concentration) is injected into the SCR system to react with NOx over a catalyst, converting it into nitrogen and water. Precise dosing and uniform mixing of aqueous ammonia are essential to maximize NOx reduction efficiency, minimize ammonia slip, and avoid equipment corrosion.
Premix Technologies, based in Ahmedabad, Gujarat, India, designs advanced Aqueous Ammonia Injection Skids for NOx emission control. Our systems integrate agitators for homogeneous ammonia mixing, delivering precise dosing to optimize SCR performance. With robust safety features and global standard compliance, we provide reliable solutions for power plants, cement plants, and other industrial applications requiring effective NOx control.
Why Choose Premix Technologies for Aqueous Ammonia Injection Skids?
Premix Technologies offers innovative, safe, and efficient ammonia dosing solutions, distinguished by:
- Precision Dosing and Mixing for Optimal NOx Reduction
- Accurate Ammonia Delivery: Our systems dose aqueous ammonia (0.1-5 g/Nm³, adjustable) with ±0.5% accuracy, tailored to flue gas flow rates, using API 675-compliant metering pumps.
- Homogeneous Mixing: Integrated agitators with propeller or turbine impellers ensure uniform blending of aqueous ammonia in storage tanks, preventing stratification and ensuring consistent dosing for SCR systems.
- Real-Time Control: Inline flow meters and ammonia analyzers enable automated dosing adjustments, optimizing NOx reduction while minimizing ammonia slip (typically
- Robust Safety and Regulatory Compliance
- Explosion-Proof Design: Certified to ATEX/IECEx Zone 1/2, our systems ensure safe operation in hazardous industrial environments handling flammable ammonia vapors.
- Material Compatibility: Corrosion-resistant materials (e.g., SS316L, Hastelloy, PVDF) withstand aqueous ammonia’s corrosive properties, ensuring system durability.
- Safety Mechanisms: Includes pressure relief valves, leak detection, spill containment drip pans, and emergency shutdown (ESD) systems to mitigate risks from ammonia’s toxicity and corrosivity.
- Industry Standards: Compliant with API 675, ASME B31.3, ISO 9001, and EPA/ISO 14001 environmental standards, ensuring regulatory adherence for NOx control.
- High Reliability and Operational Efficiency
- Continuous Operation: Engineered for 24/7 performance in demanding settings like power plants or cement kilns, handling flue gas flow rates up to 500,000 Nm³/hr.
- Low Maintenance: Durable components, including robust agitators and modular skids, reduce downtime, ideal for SCR operations.
- Smart Automation: PLC-based controls with SCADA HMI enable real-time monitoring, automated dosing, and remote diagnostics for efficient NOx control.
- Customizable, Turnkey Solutions
- Tailored Design: Systems are customized for specific flue gas flow rates, ammonia concentrations (19-29%), and pressures (up to 50 barg), meeting unique SCR requirements.
- Skid-Mounted Modularity: Compact skids simplify installation and integration into SCR systems, with robust piping for leak-free operation.
- Comprehensive Support: From 3D modeling to commissioning, we provide training, maintenance, and spare parts support for long-term reliability.
Key Applications
Premix Technologies’ Aqueous Ammonia Injection Skids are vital for:
- Power Plant NOx Control: Reduces NOx emissions in coal, gas, or biomass-fired power plants via SCR systems, ensuring compliance with EPA and local regulations.
- Cement Plant Emissions: Controls NOx in kiln exhaust gases, supporting environmental compliance in cement production.
- Industrial Boilers: Enhances NOx reduction in industrial boiler flue gas streams, improving air quality.
- Waste Incineration: Manages NOx emissions in incinerator flue gases, meeting stringent environmental standards.
- Marine SCR Systems: Supports NOx reduction in marine engine exhausts for compliance with IMO Tier III regulations.
Technical Specifications
Our Aqueous Ammonia Injection Skids are engineered for precision, safety, and durability, with specifications optimized for NOx emission control:
|
System Component |
Capabilities & Features |
Value for NOx Emission Control |
|
Flue Gas Flow Rate |
Up to 500,000 Nm³/hr, customizable |
Supports high-volume SCR systems in power plants and industrial facilities. |
|
Ammonia Dosing Rate |
0.1-5 g/Nm³, adjustable |
Precise dosing optimizes NOx reduction, minimizing ammonia slip. |
|
Storage Tank |
500–20,000 L, SS316L or PVDF |
Safe storage for aqueous ammonia, preventing degradation. |
|
Agitator |
0.18–3 kW motor, propeller/turbine impeller, low RPM |
Ensures homogeneous mixing, preventing ammonia stratification. |
|
Metering Pump |
Diaphragm, ±0.5% accuracy, API 675-compliant |
Reliable dosing for consistent SCR performance. |
|
Flow Meter |
Coriolis or Ultrasonic, ±0.2% accuracy |
Accurate flow data ensures precise ammonia-to-flue gas ratios. |
|
Ammonia Analyzer |
Inline, ±0.1 ppm accuracy |
Real-time monitoring minimizes ammonia slip and optimizes dosing. |
|
Control System |
PLC-based, SCADA HMI, auto-dosing, alarms |
Enables precise, remote operation with safety monitoring. |
|
Materials |
SS316L, Hastelloy, PVDF |
Resists corrosion from ammonia, ensuring longevity. |
|
Safety Compliance |
ATEX/IECEx Zone 1/2, pressure relief, ESD, spill containment |
Safe handling of ammonia in hazardous environments. |
|
Skid Design |
Structural steel or SS, drip pan for spill containment |
Compact, durable for industrial conditions. |
|
Piping System |
SS316L or PVDF seamless piping, flanged, with check valves |
Ensures leak-free operation and component protection. |
Additional Benefits
- Chemical Compatibility: Optimized for 19-29% aqueous ammonia, with adjustable dosing for varying NOx levels.
- Low Ammonia Slip: Precise dosing ensures compliance with emission standards (e.g.,
- Environmental Compliance: Supports adherence to EPA, ISO 14001, and IMO Tier III regulations for NOx reduction.
- Global Standards: Meets API, ASME, and CE requirements for worldwide deployment.
- After-Sales Support: Maintenance plans, spare parts, and remote diagnostics ensure reliable performance.
Optimize NOx Control with Premix Technologies
Premix Technologies’ Aqueous Ammonia Injection Skids with agitators deliver precision, safety, and compliance for NOx emission control in SCR systems. Our expertise in dosing and mixing technology ensures effective NOx reduction for power plants, cement plants, and industrial facilities. Achieve environmental compliance and operational efficiency with our tailored solutions.
Contact us at sales@premixtechnologies.com or +91 89056 16775 to discuss your NOx control needs and request a customized proposal. Visit www.premixtechnologies.com for more information.