DeNOx scrubber

The NOx scrubbing system is a 2 steps process in which the NOx emissions are initially oxidized before being absorbed in a scrubber.

After a temperature reduction of the flue gases in a quencher, the NOx emissions are oxidized in a first reactor in the presence of chlorine dioxide (ClO2) or ozone (O3). Subsequently the nitrogen oxides are absorbed in a scrubber using a caustic soda (NaOH) / sodium sulfite (Na2SO3) solution. In this second reactor, dust and SOx are simultaneously removed. The system is also design for an optimal use of the recovered heat.

The DeNOx scrubber from ANDRITZ is a suitable and reliable solution for industrial application with harsh operating conditions like in the Pulp & Paper, Waste to Energy and other industries.

The key features of the ANDRITZ DeNOx scrubber are:

NOx removal rates up to 80%
Low temperature application (< 100°C possible)
Simultaneous dust and SO2 removal
Reliable operation for harsh operational conditions (temperature, flue gases with various contaminants, …)
Integrated heat recovery with GGHs or feed water pre-heating

Denitrification

ANDRITZ provides you with the full range of efficient denitrification technologies to reduce your nitrogen oxides (NOx) emissions.

Technologies - Clean Air Technologies

ANDRITZ has over 130 years of experience in designing and building clean air technologies equipment. From single to multi-pollutants control equipment, adapted for heat recovery when needed, ANDRITZ solutions range from dedusting, desulphurization, denitrification, mercury control technologies to combined/multi-stage and multi-pollutants systems.

Industries - Clean Air Technologies

ANDRITZ has an extensive experience across all major industries, Pulp & Paper, Iron & Steel, Metals, Waste to Energy (incl. RDF and sludge), Mining, Biomass and Utility, ANDRITZ provides you with a comprehensive portfolio of clean air technologies solutions focusing on reduced emissions, improved performance and efficiency to meet your operation strategies.

Service, retrofit and modernization

Clean Air Technologies – Clean environment for a better tomorrow