The Global Denitration Market was valued at USD 9.8 Billion in 2023 and is projected to reach USD 14.2 Billion by 2028, growing at a Compound Annual Growth Rate (CAGR) of 7.2% during the forecast period (2023–2028). This significant growth is primarily fueled by stringent government regulations to curb nitrogen oxide (NOx) emissions, rapid industrialization in emerging economies, and the expanding global power generation sector.

As industries worldwide intensify their focus on environmental compliance and sustainable operations, the demand for advanced air pollution control technologies has surged. In this blog, we profile the Top 10 Companies in the Denitration Industry—a diverse mix of global engineering giants, technology specialists, and environmental solution providers shaping the future of cleaner industrial processes.

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🔟 1. Hitachi Zosen Corporation

Headquarters: Osaka, Japan
Key Offering: Selective Catalytic Reduction (SCR) Systems, Catalysts, Engineering & Construction

Hitachi Zosen is a world leader in environmental systems, with a formidable presence in the denitration market. The company provides comprehensive SCR systems, a highly effective technology for reducing NOx emissions from industrial flue gases, serving power plants, waste incinerators, and marine engines.

Technological Innovations:

• Proprietary high-performance SCR catalysts with long service life

• Integrated air quality control systems combining denitration, desulfurization, and dust removal

• Focus on developing catalysts for low-temperature applications

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9️⃣ 2. Cormetech Inc.

Headquarters: Charlotte, North Carolina, USA
Key Offering: SCR Catalysts, Catalyst Management Services, Regeneration

Cormetech is a dominant global supplier of SCR catalysts, which are the core component of denitration systems. The company specializes in the design, manufacture, and recycling of catalysts for utility, industrial, and marine applications across North America, Europe, and Asia.

Technological Innovations:

• World’s largest regenerator of SCR catalysts, promoting a circular economy

• Advanced catalyst formulations resistant to poisoning and sintering

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8️⃣ 3. Topsoe A/S

Headquarters: Kongens Lyngby, Denmark
Key Offering: SCR Catalysts, DENOX Catalyst Technology, Process Design

Topsoe is a renowned catalyst technology company with a strong foothold in the denitration sector. Its expertise in chemical processes enables it to deliver high-efficiency catalysts and tailored solutions for a wide range of fuel types and combustion conditions.

Technological Innovations:

• Development of robust catalysts for biomass and waste-to-energy applications

• Integrated solutions for simultaneous NOx and N2O abatement

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7️⃣ 4. Ceram-Ibiden Environmental Solutions Co., Ltd.

Headquarters: Tokyo, Japan
Key Offering: Honeycomb SCR Catalysts, DPF (Diesel Particulate Filters), Systems Integration

A joint venture between Ibiden Co., Ltd. and NGK Insulators, Ltd., Ceram-Ibiden is a major player in ceramic-based environmental products. The company is a leading manufacturer of high-durability honeycomb catalysts for SCR systems used in power generation and heavy industries.

Technological Innovations:

• Specialization in large-cross-section honeycomb catalysts for high-dust conditions

• Combined SCR and DPF systems for diesel engine emissions control

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6️⃣ 5. JGC C&C

Headquarters: Yokohama, Japan
Key Offering: Engineering, Procurement, and Construction (EPC) for Denitration Systems

JGC C&C, part of the JGC Holdings Corporation group, provides comprehensive EPC services for environmental plants, including sophisticated denitration systems. The company executes large-scale projects for industrial and power clients, integrating SCR technology into complex plant infrastructures.

Technological Innovations:

• Turnkey EPC solutions for flue gas treatment systems

• Expertise in retrofitting denitration systems into existing power plants

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5️⃣ 6. Zhejiang Hailiang Co., Ltd.

Headquarters: Zhuji, Zhejiang, China
Key Offering: Copper Tubes, Microchannel Aluminum Tubes, Precision Tubes for Heat Exchangers

While primarily a non-ferrous metal processing company, Zhejiang Hailiang supplies critical components used in the manufacturing of heat exchangers and reactors within denitration systems. Its high-precision tubes are essential for the efficient operation of SCR system components.

Technological Innovations:

• Advanced manufacturing of corrosion-resistant alloys for harsh flue gas environments

• Supply chain integration for environmental equipment manufacturers

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4️⃣ 7. Babcock & Wilcox Enterprises, Inc. (B&W)

Headquarters: Akron, Ohio, USA
Key Offering: SCR Systems, Boiler Equipment, Aftermarket Parts & Services

Babcock & Wilcox is a legacy energy technology provider with a strong environmental technologies segment. The company designs and supplies complete SCR systems and offers lifecycle support, including catalyst replacement and system optimization services for fossil-fuel power plants.

Technological Innovations:

• BrightLoopTM chemical looping technology for inherent carbon capture

• Advanced monitoring and diagnostic services for SCR system performance

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3️⃣ 8. Mitsubishi Heavy Industries, Ltd. (MHI)

Headquarters: Tokyo, Japan
Key Offering: Air Quality Control Systems, SCR Technology, Flue Gas Desulfurization

MHI Group is a global industrial giant offering integrated environmental solutions. Its denitration business provides high-performance SCR systems and catalysts, often bundled with its power generation equipment, ensuring optimized emissions control from the outset.

Technological Innovations:

• Development of the “MACT” catalyst for high-efficiency NOx removal

• Integrated CO2 capture systems alongside denitration solutions

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2️⃣ 9. Johnson Matthey PLC

Headquarters: London, United Kingdom
Key Offering: SCR Catalysts, Emission Control Technologies, Precious Metal Services

Johnson Matthey is a global leader in sustainable technologies, including sophisticated catalyst science for emissions control. The company supplies advanced SCR catalysts for stationary and mobile sources, leveraging its deep expertise in catalysis and precious metals.

Technological Innovations:

• Innovative catalyst coatings for improved low-temperature activity

• Pioneering technologies for NOx abatement in chemical processes

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1️⃣ 10. Doosan Lentjes GmbH

Headquarters: Essen, Germany
Key Offering: Flue Gas Cleaning Systems, SCR Technology, Waste-to-Energy Solutions

A subsidiary of Doosan Enerbility, Doosan Lentjes specializes in energy-from-waste and flue gas cleaning technologies. The company provides tailor-made SCR denitration systems that are particularly effective in handling the complex flue gas compositions from waste incineration plants.

Technological Innovations:

• Specialized solutions for high-moisture and corrosive flue gases

• SNCR (Selective Non-Catalytic Reduction) technology for cost-effective NOx control

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🌍 Outlook: The Future of Denitration Technology Is Smarter and More Integrated

The denitration market is rapidly evolving beyond basic compliance. While SCR and SNCR technologies remain the workhorses, the industry is shifting towards intelligent, data-driven systems that optimize performance, reduce operating costs, and integrate with broader carbon management strategies.

📈 Key Trends Shaping the Market:

• Increasing adoption of hybrid SNCR-SCR systems for optimal cost-efficiency

• Development of catalytic filters for combined NOx and particulate matter removal

• Growing demand for retrofit solutions in aging coal-fired power plants, especially in Asia

• Rise of digital twin technology for predictive maintenance and performance optimization of denitration units

The companies listed above are not just supplying equipment—they are enabling the global transition to cleaner industrial production and helping to build a more sustainable future.

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