Oxidation denitrification technology

Product Details

The basic principle of selective oxidation denitrification technology is that ozone oxidation denitrification mainly utilizes the strong oxidizing property of ozone to oxidize insoluble low valence nitrogen oxides into soluble high valence nitrogen oxides, and then the nitrogen oxides are washed in the washing tower

Absorption to achieve the purpose of removal.

Our company has conducted research on the oxidation mechanism of NO in the process of simultaneous desulfurization and denitrification with ozone. We have conducted comprehensive simulation experiments on the introduction of ozone in the flue, gas distribution method, gas-phase mixing method, temperature control effect, dust effect, etc

A detailed chemical reaction mechanism between 03 and NOX has been constructed, which is quite complex. In practical experiments, the key reaction between ozone and NO under low temperature conditions can be studied.

The key reaction between 03 and NO under low temperature conditions is as follows:

NO+03→NO2+O2

N02+03→NO3+O2

N03+N02→N2O5

2NO+O2=2NO2

4NO2+O2+2H2O=4HNO3

2NO+O2=2NO2

4NO2+02+2H₂0=4HNO3

MgO+2HN03=Mg(N03)2+H20

Compared with other chemical substances in the gas phase such as cO, SOx, etc., NOx can be quickly oxidized by ozone, which makes the ozone oxidation of NOx highly selective. Because NOx in the gas phase is converted into a water-soluble solution

The ionic compound makes the oxidation reaction more complete, thereby irreversibly removing NOx without producing secondary pollution. After oxidation reaction, the added ozone is consumed by the reaction, and excess ozone can be separated in the spray tower

Solution. In addition to NOx, some heavy metals such as mercury and other heavy metal pollutants are also oxidized by ozone. The high concentration of dust or solid particles in the flue gas will not affect the removal efficiency of NOx.

Ozone oxidation denitrification can be applied to utility boilers fueled by coal, coke, and lignite; Industrial boilers fueled by gas, coal, and heavy oil, as well as various furnaces and kilns used for the processing and production of lead, iron, zinc/copper, glass, and cement; Used for

Combustion furnaces for handling biological waste, tires, and other industrial waste, with acidic gas streams from acid washing and chemical processes; Catalytic cracking tail gas, various municipal and industrial waste incinerators, etc.