Optinox

Optinox – Optimization of biomass comustions with the objective of reducing nitrogen oxide emissions

The focus of the research project “Optinox” lies on the development of cost-efficient measures to reduce nitrogen oxide emissions of medium biomass combustion plants with a thermal firing capacity between 1 – 50 MW which are using combustible material with a high concentration of nitrogen e.g. straw and waste wood from wood-processing industries. In order to reduce nitrogen oxide emissions a combination of air grading and a downstream selective non-catalytic reduction (SNCR) are used. Through the optimization of the air grading the profitability of the firing systems is increased and lower NO_x concentrations achieved.

The optimization of the air grading and SNCR shall be accomplished through experimental and numeric methods. The research project aims at fundamental investigations of TFN-release (total fixed nitrogen), NOx formation and the potential to diminish NOx emissions in various firing systems (entrained flow-, fluidized bed-, fixed bed reactor).

Funding:

We are very grateful for the support and promotion of the project by the Agency for Renewable Resources, funded by the Federal Ministry of Food and Agriculture (BMEL).

Project partners:

• Chair of Energy Systems, TUM
• STAEDTLER Mars GmbH & Co. KG (Neumarkt i. d. OPf.)
• Ørsted (Avedøreværket, Skærbæk)