New projects in the field of exhaust gas cleaning: MAAT und PartEX4Abholz

  Figure MAAT

Back at the end of 2022, the Working Group Gas and Measurement Technology started two new research projects, both focusing on secondary abatement techniques for organic and inorganic pollutants from combustion processes.

As part of the joint project MAAT (Maritime Waste and Wastewater Management Technology), the sub-project of our unit aims to develop a secondary exhaust gas cleaning system downstream of a staged firing system for the mixed thermal utilization of packaging waste (plastics, paper) and sewage sludge for shipping. High loads of sulfur dioxide, heavy metals and persistent organic pollutants are expected. A changing fuel matrix and thus a fluctuating emission profile pose further challenges.

The intended result of the project is a customized solution for the exhaust gas cleaning system, which safely fulfills the emission limits of the German 17th BImSchV (17th Ordinance on the Implementation of the Federal Immission Control Act) even under maritime conditions. The scientific focus of the work is on the combined reduction of different pollutants in one treatment step. The project addresses the harmful environmental impact caused by international shipping, especially by cruise ships.

  PartEX4Abholz figure

The reduction of fine and ultrafine particles (UFP) from single room furnaces is the subject of the second project, PartEX4Abholz (particle separators with filter packs made of textured yarns for flue gas cleaning on wood log fired furnaces). The project thus addresses the high load of air pollutants caused by residential wood combustion and is directly linked to the results of the project TeToxBeScheit. The main objective of the project is the development of a new type of fibrous filter material that outperforms conventional depth filter materials in terms of capacity. In additional to ultra fine soot particles, low volatile organic compounds (SVOC) such as polycyclic aromatic hydrocarbons (PAH) can also be separated and deposited in the filter material. As a core component of a closed filter system, the novel material will be able to bring in its advantage especially in combination with an electrostatic precipitator. In combination a new level of emission reduction for single room furnaces can be archived.