Catalytic NOx reduction with simultaneous dioxin and furan oxidation

Area of Science:

• Environmental Engineering
• Chemical Engineering
• Catalysis

Background:

• Municipal waste incineration generates flue gases containing pollutants like Polychlorinated dibenzodioxins and dibenzofurans (PCDD/Fs), nitrogen oxides (NOx), and carbon monoxide (CO).
• Effective flue gas cleaning is crucial for reducing environmental impact and meeting regulatory standards.

Purpose of the Study:

• To evaluate the engineering, construction, performance, and running costs of a catalytic flue gas cleaning component.
• To demonstrate the efficacy of a catalyst in reducing PCDD/F, NOx, and CO emissions from a municipal waste incinerator.

Main Methods:

• A case study of a Flemish incineration plant was conducted.
• The design, process data, and financial aspects of the catalytic component were analyzed.
• Performance was assessed based on emission reduction rates.

Main Results:

• The catalytic component achieved reliable Polychlorinated dibenzodioxins and dibenzofurans (PCDD/F) destruction to 0.001 ng TEQ/Nm3 via oxidation.
• Nitrogen oxides (NOx) emissions were reduced by 90% to approximately 50 mg/Nm3.
• Carbon monoxide (CO) emissions were reduced by 20% to below 10 mg/Nm3.

Conclusions:

• The catalytic flue gas cleaning component is effective in significantly reducing PCDD/F, NOx, and CO emissions.
• The study provides valuable data on the performance and financial viability of such systems in municipal waste incineration.