The Global Flue Gas Denitrification Technology Market was valued at USD 3.78 Billion in 2025 and is projected to reach USD 6.92 Billion by 2032, growing at a Compound Annual Growth Rate (CAGR) of 7.8% during the forecast period (2025–2032). This substantial growth is being driven by increasingly stringent global emission regulations, rapid industrialization in emerging economies, and significant technological advancements in Selective Catalytic Reduction (SCR) and Selective Non-Catalytic Reduction (SNCR) systems.

As industries worldwide confront the challenge of reducing nitrogen oxide (NOx) emissions, the companies providing air pollution control solutions are at the forefront of enabling environmental compliance. In this blog, we profile the Top 10 Companies in the Flue Gas Denitrification Technology Industry—a mix of established industrial giants and specialized engineering firms shaping the future of cleaner industrial operations.

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🔟 1. ANDRITZ

Headquarters: Graz, Austria
Key Offering: SCR Systems, SNCR Systems, Integrated Flue Gas Cleaning Solutions

ANDRITZ is a global leader in industrial plant engineering, with a dominant position in the flue gas denitrification market. The company provides comprehensive solutions for air pollution control, including advanced SCR and SNCR technologies tailored for power plants, waste-to-energy facilities, and industrial boilers. Their systems are renowned for high NOx removal efficiency and operational reliability.

Technology Leadership Initiatives:

• Development of low-temperature SCR catalysts for enhanced efficiency

• Integration of digital monitoring and AI for optimized system performance

• Expansion of service networks across Asia-Pacific and North America

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Global Flue Gas Denitrification Technology Market – View in Detailed Research Report

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9️⃣ 2. Doosan Lentjes

Headquarters: Ratingen, Germany
Key Offering: Wet and Dry Denitrification Systems, Hybrid DeNOx Solutions

Doosan Lentjes, part of the South Korean Doosan Group, specializes in environmental and energy technologies. The company offers innovative denitrification systems that combine high removal efficiency with cost-effectiveness, serving coal-fired power plants and heavy industries across Europe and Asia.

Technology Leadership Initiatives:

• Focus on retrofitting solutions for existing power plants

• Development of multi-pollutant control systems integrating DeNOx and desulfurization

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8️⃣ 3. Sumitomo Heavy Industries

Headquarters: Tokyo, Japan
Key Offering: SCR Systems, Catalyst Manufacturing, Environmental Plants

Sumitomo Heavy Industries leverages its expertise in heavy machinery to deliver robust denitrification solutions, particularly for the power generation sector. The company is a key player in the Asian market, known for its high-quality catalysts and reliable system performance.

Technology Leadership Initiatives:

• Proprietary catalyst development for extended service life

• Strategic partnerships with utility companies across Southeast Asia

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7️⃣ 4. ERC Technik

Headquarters: Mülheim an der Ruhr, Germany
Key Offering: Compact SCR Systems, Engineering Services, Ammonia Injection Technology

ERC Technik specializes in customized denitrification solutions for medium-scale industrial applications. The German engineering firm excels in developing space-efficient SCR systems that cater to the specific needs of chemical plants, refineries, and smaller power generation units.

Technology Leadership Initiatives:

• Innovation in compact system design for space-constrained facilities

• Advanced ammonia injection grid technology for uniform reagent distribution

Download FREE Sample Report:
Global Flue Gas Denitrification Technology Market – View in Detailed Research Report

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6️⃣ 5. LONGKING

Headquarters: Longyan, Fujian, China
Key Offering: SCR Systems, Dust Removal, Flue Gas Treatment EPC

LONGKING is a major Chinese environmental protection company with significant market share in Asia. The company provides integrated flue gas treatment solutions, combining denitrification with particulate matter control, and has installed numerous systems in China’s rapidly expanding power and industrial sectors.

Technology Leadership Initiatives:

• Cost-effective solutions tailored for the Chinese market

• Extensive EPC capabilities for turnkey environmental projects

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5️⃣ 6. Mehldau & Steinfath Umwelttechnik

Headquarters: Essen, Germany
Key Offering: SNCR Systems, Urea Injection Technology, Burner Management

Mehldau & Steinfath Umwelttechnik focuses on selective non-catalytic reduction technologies, offering efficient and economical solutions for NOx reduction. The company serves a diverse client base across Europe, particularly in industries where lower temperature operations make SNCR the preferred choice.

Technology Leadership Initiatives:

• Specialization in urea-based SNCR systems

• Integration with combustion optimization for enhanced performance

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4️⃣ 7. Lechler

Headquarters: Metzingen, Germany
Key Offering: Injection Nozzles, Ammonia Distribution Systems, SCR Optimization

Lechler is a world leader in injection technology, providing critical components for denitrification systems. Their precision nozzles and distribution systems ensure optimal reagent mixing in SCR applications, contributing to high NOx removal efficiency and minimal ammonia slip.

Technology Leadership Initiatives:

• Development of high-precision injection nozzles for various applications

• Collaboration with system integrators for optimized component performance

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3️⃣ 8. SICK

Headquarters: Waldkirch, Germany
Key Offering: Emission Monitoring Systems, Gas Analyzers, Process Control

SICK provides advanced analytical instrumentation essential for monitoring and controlling denitrification processes. Their continuous emission monitoring systems (CEMS) enable precise measurement of NOx levels, ensuring regulatory compliance and optimal system operation.

Technology Leadership Initiatives:

• Innovation in laser-based gas analysis technology

• Integration of IoT capabilities for remote monitoring and diagnostics

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2️⃣ 9. IDRECO

Headquarters: Milan, Italy
Key Offering: SCR Catalysts, Regeneration Services, System Upgrades

IDRECO specializes in catalyst technology and services for denitrification systems. The Italian company offers both new catalysts and regeneration services, helping operators maintain system efficiency while managing operational costs through extended catalyst life cycles.

Technology Leadership Initiatives:

• Catalyst regeneration and recycling services

• Development of specialized catalysts for challenging fuel types

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1️⃣ 10. Jiangsu Zeshi Environmental Protection Technology

Headquarters: Yancheng, Jiangsu, China
Key Offering: Denitrification Equipment, Environmental Engineering, Technical Services

Jiangsu Zeshi is an emerging player in the Chinese environmental protection market, focusing on denitrification technologies for industrial applications. The company benefits from China’s strong emphasis on air quality improvement and has developed solutions tailored to local market requirements.

Technology Leadership Initiatives:

• Focus on cost-competitive solutions for small and medium enterprises

• Expansion of service capabilities in China’s industrial heartland

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Global Flue Gas Denitrification Technology Market – View in Detailed Research Report

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🌍 Outlook: The Future of Flue Gas Denitrification is Smarter and More Integrated

The flue gas denitrification market is undergoing a significant transformation. While traditional SCR and SNCR technologies continue to dominate, the industry is increasingly focusing on integrated solutions, digitalization, and enhanced cost-effectiveness to meet evolving regulatory requirements.

📈 Key Trends Shaping the Market:

• Accelerated adoption of combined DeNOx and desulfurization systems for comprehensive emission control

• Growing emphasis on retrofitting existing facilities to meet stricter emission standards

• Integration of AI and IoT for real-time optimization and predictive maintenance

• Expansion into emerging industrial applications beyond power generation

Get Full Report Here:
Global Flue Gas Denitrification Technology Market – View in Detailed Research Report

The companies profiled above are not only enabling regulatory compliance—they’re driving the technological evolution that makes cleaner industrial operations economically viable on a global scale.