Why should we control NOx?

When the combustion of oil occurs, around 50\% of the total emissions is NOx. When the combustion of coal occurs, that ratio rises to about 80\% of the total emissions being NOx. This is the reason for governmental regulation, as every other source pales in comparison.

How do I reduce NOx emissions for a smog check?

The solution to this problem is called De-Carbonizing. It usually costs around two labor hours at a smog check repair station. It will remove a good amount of carbon out of an engine. This will increase combustion space, lower compression and lower NOx.

How is NOx measured?

In practice, the main methods employed for the measurement of NOx are infrared, chemiluminescence and electrochemical. The chemiluminescence detector (CLD) method of measuring NO is based on the use of a controlled amount of Ozone (O3) coming into contact with the sample containing NO inside a light sealed chamber.

How do I control NOx in my boiler?

By injecting water or steam into the flame, flame temperatures are reduced, thereby lowering thermal NOx formation and overall NOx levels. Water or steam injection can reduce NOx up to 80\% (when firing natural gas) and can result in lower reductions when firing oils.

What causes high NOx in car?

High NOx emissions can occur when an engine’s air-fuel mixture is too lean. This can happen when too much air is added to the fuel or when too little fuel is injected into the engine. In either case, this causes the mixture to burn hotter.

How do you measure NOx?

In practice, the main methods employed for the measurement of NOx are infrared, chemiluminescence and electrochemical. However, emissions monitoring standards are generally performance based so users are able to select analysers that are able to demonstrate the required performance specification.

What is NOx reading?

The Total NOx reading is therefore the sum of the measured NO and the measured NO2. Certain environmental agencies, like the U.S. EPA, may require this more accurate NOx reading.

What does NOx ppm mean?

Parts Per Million
The primary nitrogen pollutants produced by combustion are nitric oxide (NO) and nitrogen dioxide (NO2) and are generally referred to collectively as NOx. Instruments which measure NOx generally read in Parts Per Million (PPM).