Work

Selective Non‐Catalytic Reduction of NO x in the Exhaust Gas of Small Wood Gasification Boilers

Year: 2026

Type: article

Abstract: ABSTRACT The gas‐phase reaction of NO and NH 3 according to the selective non‐catalytic reduction (SNCR) was investigated for the removal of NO x from the exhaust gas of small‐scale wood gasification boilers. The SNCR process was studied in a specially designed laboratory‐scale flow reactor over a temperature range of 700°C–1050°C. The results demonstrated the practical potential of SNCR for application in wood gasification boilers, achieving a NO x conversion of 51% at 900°C and a residence time of 0.465 s, while maintaining an NH 3 slip below 10 ppmv and N 2 O yields below 3 ppmv. Additionally, a simplified global kinetic model of the SNCR reaction was developed to estimate achievable NO x conversions and the required reducing agent demand with limited computational effort.

Source: Chemie Ingenieur Technik

DOI: 10.1002/cite.70149

Authors: Alexander Groß, Sven Kureti

Institution: TU Bergakademie Freiberg

Language: English

Topic: Industrial Gas Emission Control

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $4,030