Research of siliceous fly ash after denitrification utilisation in ternary binders

Construmat 2018

Bambuchova, M.^1 ; Pytlik, D.^1

Faculty of Civil Engineering, VSB - Technical University of Ostrava, Ludvika Podeste 1875/17, Ostrava - Poruba

70833, Czech Republic^1

关键词: Activity index;    Ammonia water;    Nitrogen oxide emissions;    Nox reduction;    Partial replacement;    Recycled concretes;    Selective non-catalytic reduction;    Third component;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/385/1/012003/pdf
DOI  :  10.1088/1757-899X/385/1/012003

来源: IOP

【 摘 要 】

The requirement to reduce the nitrogen oxide emissions in the production of electricity and heat by combustion of mainly brown coal leads to the installation of NOx reduction technologies. The presented paper focuses on a partial replacement of Portland cement with siliceous fly ash after denitrification by a selective non-catalytic reduction method (SNCR) where urgent urea or ammonia water solution is injected into the combustion chamber. As the third component of the ternary binder the limestone and/or recycled concrete powder was used. The activity index of compressive strengths and the workability of mortars were tested in accordance with EN 196-1.