CONVERSION OF NITROGEN OXIDES AND AROMATIC VOLATILE ORGANIC COMPOUNDS ON SCR-DeNOx COMMERCIAL CATALYST
LAZÄ‚R LILIANA 1, STOLLE RAIK 2, KÃ-SER HEINZ 2, BANDRABUR FLORIN 1 (1)GH. ASACHI TECHNICAL UNIVERSITY, FACULTY OF CHEMICAL ENGINEERING, DEPARTMENT OF CHEMICAL ENGINEERING; D. MANGERON 71 A, 700050 - IAÅžI, ROMANIA; LILLAZAR@CH.TUIAÅžI.RO (2)MARTIN-LUTHER UNIVERSITY HALLE-WITTENBERG, DEPARTMENT OF ENGINEERING SCIENCES, INST
The results of laboratory research work concerning the mbenzene and nitrogen oxides conversion on commercial catalyst SCRDeNOx n(V2O5-WO3/TiO2, with 0.53 %wt. V2O5), which is specific to the process of selective catalytic reduction in high-dust system. Experiment was carried-out at temperatures of 573 – 623 K, for low concentration of benzene (50 – 100 ppm C6H6) in gas flux at a spatial velocity equal to 6400 h-1. The influence of water vapours (5 % vol. H2O) and of specific reactants for the SCR-DeNOx (NOx, NH3) process upon benzene conversion in air stream, as well as the influence of benzene on nitrogen oxides conversion were studied. The catalytic oxidation of benzene is partial and occurs with conversion higher than 70 % at temperature of 623 K in the presence of water vapours, catalyst selectivity toward CO2 formation being equal to 60%. Presence of benzene had no significantly influence on conversion of nitrogen oxides in selective catalytic reduction reaction.
