diesel generating set DOC and DPF, tail gas treatment device, respectively, what difference does it make?

Release time:

2022-11-25

Diesel generator set is a common emergency backup power supply, widely used in data centers, banks, real estate, hospitals, schools, hotels and other places, these places are very important for the stability of the power system, but the unit in the operation of the environmental protection of emissions, has attracted much attention, generally, when the backup diesel generator set is started, the cylinder temperature is relatively low. The load is relatively small, leading to insufficient diesel combustion, at this time, it will produce relatively strong black smoke, the main component of the black smoke is not fully burned carbon particles and hydrocarbons, which is the main source of environmental pollution, but also our environmental protection needs to control emissions of substances.

First, what is the exhaust gas of diesel generator set?

Two, DOC catalytic oxidizer

DOC, the diesel generator tail gas catalytic oxidizer, is a product for the exhaust gas treatment of standby diesel generator sets. DOC oxidizes NO in waste gas into NO2, at the same time, it can remove CO and HC in waste gas, catalyze reduction into CO2 and H2O, and absorb a small amount of carbon particles to reduce harmful gases.

When DPF is coated with special precious metal catalyst, NO2 produced by DOC unit reacts with C in DPF at appropriate temperature.

The chemical equation for the removal of CO and HC in the DOC unit is as follows (main reaction equation) :

2NO+O2=2NO2

2CO+O2=2CO2

4HC+5O2 =4CO2 +2H2O

C+2NO2=CO2+2NO

C+O2=CO2

3. DPF of particle catcher

Diesel generator tail gas particle catcher DPF, also known as generator black smoke purifier and engine dust removal device, is a product for black smoke control of standby generator set. It mainly has two materials: ceramic filter and metal filter. No matter what kind of material, it has obvious effect on black smoke control. Can meet the environmental requirements of Ringman blackness below one level. For the differences and safety issues between metal filter element and ceramic filter element, or if there is any problem with the product, you can come to us. We will try our best to help you solve it.

News center