Development of a filtration system for the combined separation of ultrafine dust particles and gaseous pollutants from biomass combustion processes

F. Prill*, S. Schiller, H.J. Schmid, University of Paderborn, Germany

In the last years, the usage of biomass fuels has grown because they became economical very attractive. Hence, there is a continuous increase of pollutants in the atmosphere. Due to the use of diverse fuels (such as wood chips, straw, miscanthus) not only particulate emissions but also gaseous emissions (e.g. hydrogen chloride (HCl), sulfur dioxide (SO2) and dioxins and furans (PCDD/PCDF)) in the flue gas have to be considered. According to the 1st Federal Immission Control Ordinance in Germany (1. BImSchV: Regulation on small and medium-sized combustions) the fine dust concentration in the clean gas has to be lower than 20 mg/m³ at standard conditions. Moreover, it is expected that gaseous pollutants will be restricted in the very near future, too.

Along with our partners, Deutsches Biomasseforschungszentrum gGmbH (DBFZ) and the company Hellmich GmbH & Co. KG, we develop an adjustable filter for the combined separation of fine dust particles and harmful gases from the flue gas. Therefore, sorbents (e.g. powders of hydrated limestone, sodium hydrogen carbonate) in an entrained flow adsorber for biomass combustion plants are used.

The test rig at Paderborn University offers the possibility of testing the sorbents on a laboratory scale by using...

Session: G2 - Flue Gas Cleaning
Day: 11 October 2016
Time: 13:00 - 14:15 h