Nitrogen management | how to reduce the nox in waste gas emissions?

Release time:

2022-11-08

Selective catalytic reduction method (SCR) is to control the exhaust NOx of diesel engine. NH3 or urea is used as a reducing substance. Under certain temperature and catalytic action, NH3 is used to reduce NOx to N2 and H2O. Green Valley Environmental Protection has this unique technical advantage in the field of NOx governance: 1) Independent catalyst development. It can handle medium and high temperature catalyst at 350-550℃, with more than 95% treatment efficiency; 2) Precise control. Through matching with many world-renowned engine practices, high-precision sensors, and exclusive designed electrical systems, we ensure that the NOx and NH 3 treatment efficiency of SCR and ASC systems meet the most stringent global emission standards. The built-in cloud communication system provides real-time pollutant emission indicators after treatment. 3) Custom development. By collecting the original emission data of global high-horsepower engines, Green Valley Environmental Protection has provided dozens of famous engines with more than 1MW of different fuels, different application scenarios of engine exhaust pollutants such as PM, CO and NOx treatment experience.

In recent years, with the development of economy, the domestic attention to nitrogen oxide pollution, the national nitrogen oxide emission control is increasingly strict. The main source of nitrogen oxides is the combustion of fossil fuels, which accounts for the majority, as well as emissions from thermal power plants and emissions from nitric acid production.

The main nitrogen oxides are nitric oxide, nitrogen dioxide, etc. Nitrogen oxides are harmful to human health and the environment. Common air pollutants can stimulate human respiratory organs, invade the bronchus and alveoli of the respiratory tract, and cause pulmonary edema and other hazards. It will also cause acid rain and acid fog, damage the ozone layer, acid deposition, particulate matter pollution, rich oxidation and soil acidification and ecosystem imbalance.

To reduce nitrogen oxide emissions, we can take the following measures:

1. Control the formation of nitrogen oxides in the combustion process. Reduce the range of high combustion temperature zone, reduce the peak combustion temperature of boiler combustion, reduce the excess air coefficient of combustion and local oxygen concentration.

2. Reduce the produced nitrogen oxides to nitrogen in some way.

3. Control the nitrogen oxides in the boiler flue gas.

4.Reduce the excess air system of combustion, control the combustion of fuel and air in the early stage, and improve the local fuel concentration in the furnace.

Green Valley Environmental Protection has this unique technical advantage in the field of NOx governance:

1) Independent catalyst development. It can handle medium and high temperature catalyst at 350-550℃, with more than 95% treatment efficiency;

2) Precise control. Through matching with many world-renowned engine practices, high-precision sensors, and exclusive designed electrical systems, we ensure that the NOx and NH 3 treatment efficiency of SCR and ASC systems meet the most stringent global emission standards. The built-in cloud communication system provides real-time pollutant emission indicators after treatment.

3) Custom development. By collecting the original emission data of global high-horsepower engines, Green Valley Environmental Protection has provided dozens of famous engines with more than 1MW of different fuels, different application scenarios of engine exhaust pollutants such as PM, CO and NOx treatment experience.

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