DeNOx is a common abbreviation in environmental engineering for the process of Denitrogen Oxides. It refers to technologies and processes designed to remove nitrogen oxides (NOx)—primarily nitric oxide (NO) and nitrogen dioxide (NO₂)—from exhaust gases produced by industrial combustion processes .

Primary Technological Methods

DeNOx technologies are broadly classified into two categories: combustion control and post-combustion treatment.

Combustion Control (Preventive Measures)

These technologies focus on modifying the combustion process itself to suppress the formation of NOx.

- Low-NOx Burners (LNB): These are designed to control the mixing of fuel and air to achieve lower peak flame temperatures and reduce oxygen availability in the NOx-forming zones, thereby minimizing NOx generation.

Post-Combustion Treatment (End-of-Pipe Solutions)

These are the most widely applied DeNOx methods, treating the Flue Gas after combustion has occurred. The two dominant technologies are SCR and SNCR.

Application Field

DeNOx systems are critical in numerous industries, including:

- Coal-fired and Gas-fired Power Plants

- Industrial Boilers and Furnaces (e.g., in steel, cement, glass, and chemical industries)

- Waste Incineration Plants

- Marine and Automotive Exhaust Treatment (the core principles are similar, though the systems are adapted for mobile use)