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Struggling with NOx emissions? Find out how to efficiently reduce them using advanced RTO technology.

RTO application scenarios

What is NOx?

NOx refers to a collective term for pollutants composed of nitrogen oxides, primarily including nitric oxide (NO) and nitrogen dioxide (NO₂).
In industrial combustion systems, NOx is typically formed at a ratio of 90–95% NO and 5–10% NO₂. The formation mechanisms of NOx are classified into three types: ① Thermal NOx, generated by oxidation of atmospheric N₂ via the Zeldovich mechanism at temperatures exceeding 1,300°C; ② Fuel NOx, formed from the oxidation of nitrogen-containing fuels; ③ Prompt NOx, produced in high-temperature zones with hydrocarbon radicals. NOx is a gaseous pollutant strictly regulated under the Dutch NEer and EU IED directives, with typical emission limits ranging between 30–150 mg/Nm³.

The Hazards of NOx

Environmentally, NOx is a precursor to ozone (O₃) and fine particulate matter (PM2.5), contributing to urban air pollution and increasing smog. When NOx combines with water vapor, it can also generate acid rain, acidifying soil, vegetation, and water sources, thus impacting ecosystems. Furthermore, NOx exacerbates the greenhouse effect and accelerates climate change. In terms of human health, NOx irritates the respiratory system, increasing the risk of asthma, chronic bronchitis, and other diseases; long-term exposure may lead to decreased lung function and cancer.

RTO application scenarios

Industry Distribution Diagram

 


NOx Emission Control Requirements by Industry

Industry / Facility Type Applicable Regulations / Guidelines NOx Emission Control Requirements / Notes
General Manufacturing / Coating / Printing / Small-scale Chemical Processing NeR + RIE Comply with NeR emission limits + RIE permit; recommend using low-NOx burners / denitrification equipment
Large-scale Combustion Facilities / Energy / Boilers / Power Plants IED + NeR + RIE Must adopt BAT technology (low-NOx combustion + SCR/SNCR); continuous emission monitoring (CEMS)
New/Expanded Facilities (Chemical, Lithium Battery, Metal Processing) IED + Updated IED Expansion Clauses + RIE Need to submit emission predictions and BAT plans; stricter NOx limits may apply
Located near Environmentally Sensitive Areas / Natura 2000 / Protected Areas NeR + RIE + Local Environmental Approval Stricter limits + emission reduction impact assessment; additional denitrification / emission reduction measures may be required

Technological advantages

95% NOx removal via hybrid SCR per EPA benchmarks – According to EPA guidelines, our Regenerative Thermal Oxidation (RTO) technology can achieve up to 95% NOx removal using hybrid Selective Catalytic Reduction (SCR) systems

EU IED Compliance – Achieve compliance with the European Union’s Industrial Emissions Directive (IED), ensuring your operations meet strict environmental regulations.

<30 mg/Nm³ NOx Emission Standard – Our RTO system delivers NOx emissions below 30 mg/Nm³, ensuring efficient environmental performance.

Energy Savings of up to 40% – Our advanced RTO systems offer energy savings of up to 40%, reducing operational costs while maintaining high performance.

Global Installation Base in Power & Refining – Our technology is used in power plants and refineries around the world, helping to reduce emissions and improve air quality.

FAQ

  1. How does RTO minimize NOx in US refineries?

    • RTO technology minimizes NOx emissions in US refineries by using high-temperature oxidation to break down pollutants. The system operates at temperatures over 1000°C, converting harmful nitrogen oxides into harmless nitrogen and oxygen.

  2. What is the maximum NOx removal efficiency of your RTO system?

    • Our RTO system achieves up to 95% NOx removal, meeting stringent EPA and EU IED standards.

  3. What industries benefit from RTO technology?

    • RTO is ideal for industries such as power generation, oil refineries, chemical plants, and manufacturing, where emissions need to be controlled to meet environmental regulations.

  4. Is your RTO technology compliant with EU IED regulations?

    • Yes, our RTO technology is fully compliant with the EU Industrial Emissions Directive (IED), ensuring that operations meet the strict environmental standards set by the EU.

  5. What is the typical lifespan of an RTO system?

    • The lifespan of our RTO systems typically ranges from 15 to 20 years, depending on maintenance and operational conditions.

  6. Can the RTO system be used in both high and low flow applications?

    • Yes, our RTO systems are highly versatile and can be used in both high and low flow applications, providing flexibility across a wide range of industrial processes.

  7. How does RTO compare to traditional NOx removal methods like SCR?

    • RTO systems are more energy-efficient compared to traditional SCR methods, offering up to 40% energy savings while achieving similar or better NOx removal efficiency.

  8. What maintenance is required for the RTO system?

    • Routine maintenance involves cleaning the heat exchanger and replacing the catalyst at regular intervals to maintain optimal performance.

  9. How does RTO reduce energy consumption?

    • RTO technology reduces energy consumption by recovering heat during the thermal oxidation process, which is then reused to preheat incoming air, minimizing energy use.

  10. Can RTO technology be integrated into existing systems?

    • Yes, RTO can be integrated into existing industrial systems to enhance their emissions control without requiring a complete overhaul.

Contact us today to learn more and ensure your business meets environmental standards.