Low NOx Burner


The primary challenge is to design a combustion chamber to provide optimal combustion, given that pyrolysis gas is not a homogeneous fuel source. It contains a large proportion of hydrocarbons that require ample mixing with air in order to obtain optimal oxidation. The emission of nitrogen oxides (NOx) is another challenge, brought about by the fact that sewage sludge tends to contain a large proportion of nitrogen (N) — typically 4–6% of the dry matter.

Solution idea

AquaGreen’s (AG) steam drying and pyrolysis (SDP) technology aims to address the challenges that waste water companies face in disposing of sludge in a cost-effective manner. Furthermore, pyrolysis of residual fibers from biogas plants.

Project deliverables

A newly designed and dimensioned pyrolysis burner system and combustion chamber.

Problem solvers

This project is financed by Energy Cluster Denmark’s Clean Tech Innovation (CTI) support programme. It offers three years of support to allow small- and medium-sized businesses to collaboratively develop innovative electronic products focused on energy optimisation. The CTI project is supported by the European Regional Development Fund.

Project timeline

PHASE 1: Conceptualisation
PHASE 2: Development and testing
PHASE 3: Demonstration and validation
PHASE 4: Commercialisation

Financed by


Start: November 2019
End: December 2021
Funding: DKK 701.250

Contact person

Peter Munch Kofoed

Peter Munch Kofoed
Project Manager
Tlf: +45 3153 2597