Dust Concentration Measurements in Wet Flue Gases Avoiding the Influence of Sulphuric Acid Aerosols on the Measured Value to a Large Extent

Project Number 255

The amendments of the German regulations TA Luft, 13. BImSchV and 17. BImSchV resulted in a drastically lowering of the national dust concentration emission limit values. Numerous surveys among power plant operators pointed out that meeting the limit values cannot be guaranteed in all cases. A lot of plants will have dust emission concentrations near the limit values. So a sound dust measurement is very important because even small additional but wrong “dust” findings may result in exceeding the limit values.

It is the aim of this project to determine boundary conditions for a gravimetric dust measurement which allow for a measurement which is to a large extent free of virtual dust findings. This shall take place through measurements in two power plants with a sampling probe which has been developed especially for this application.

The project is carried out in spring 2005 with participation of Vattenfall Europe Power Consult GmbH, E.ON Engineering GmbH and STEAG Aktiengesellschaft. Volker Hamacher, VGB PowerTech e. V., manages the project supported by the VGB technical committee "Air Pollution and Noise Control".