Inorganic pollutatn gas NO2

What are the most important nitrogen oxides that are constantly present in the air ?

NO

NO2

N2O

List the three atmospheric chemical processes which are involved with NO and NO2!

(RED)

a

Describe the natural sources (atmospheric reactions) of the three characteristics to the

formation of pollutant NOx!

a

List the three most important anthropogenic sources of NOx! (RED)

a

Describe briefly the three characteristic mechanisms of NOx formations from fuel

combustion! (RED)

a

Which two parameters depend on the formation of thermal NO?

a

What is the temperature limit which the thermal NO process dominates?

a

What are three steps to divide prompt-NO formation? (RED)

a

How does prompt-NOx formation depend on temperature?

a

How does the fuel-NOx process depend on flame temperature and excess air ratio?

a

What does NO2 consist of in the combustion of fuel? What is the temperature at which

NO2 is formed and decomposed? (RED)

a

Describe two typical processes for the formation of N2O during fuel combustion!

a

What is the typical physiological effect of NOx on plants?

a

What is the physiological effect of NOx on humans (acute and chronic effects)?

a

What technologies can be used to reduce NOx emissions in fuel burners, and what

parameters control this process? (RED)

a

What does FGR and FIR technologies mean?

a

What does SNCR technology mean? Describe the chemical transformations of the

typical three additives! (RED)

a

What does SCR technology mean? What are the drawback/limitations of it? (RED)

a