Combined systems

   

Stationary engines

Introduction

Gas engines

Diesel engines                        (including vegetable oil)

Combined systems

In addition to combining a DOC with various technologies, the following combinations are particularly advantageous economically.

Fuel Water Emulsion technology (FWE) and SCR

Emulsion technology can either be used alone or in combination with an SCR system in order to simultaneously reduce NOx and soot emissions. If specific NOx limit values have to be complied with, the AdBlue® consumption of the SCR system can be reduced, as the engine already emits less nitrogen oxides due to the emulsion system. This means that the required NOx reduction rate for the SCR system can be reduced significantly. Depending on the size of the engine, five-figure amounts of AdBlue® can be saved each year. Along with the fuel usually saved at the same time using emulsion technology, significant annual operating cost savings are possible.

 

FWE and DPF

If very high soot or particulate reduction is required, Fuel Water Emulsion can be combined with a particulate filter (DPF). The otherwise standard increased fuel consumption by the DPF can be equalised by the reduced consumption that is usually possible with FWE. Additionally, the regeneration intervals required for the filter for active regeneration in accordance with the engine soot reduction can be increased significantly (up to 5 times) using emulsion technology. This saves fuel and lengthens the service life of the filter. It is also possible to do without an active regeneration aid in certain cases, as passive regeneration can be formed much more simply through an NOx/soot ratio that is doubled at least.

 

DPF and SCR

If very high soot, particulate and NOx reductions are required, a DPF can be combined with an SCR system. In this way, it is possible to minimise both of the diesel engine’s main pollutants, soot particles and nitrogen oxides. Exomission offers the combined DPF/SCR system in conjunction with a passive filter system.

                       

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