Journal
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
Volume 159, Issue -, Pages 213-220Publisher
ELSEVIER
DOI: 10.1016/j.psep.2022.01.001
Keywords
SCR; Electrothermal alloy; Wide temperature range; Regeneration
Categories
Funding
- National Key R&D Program of China [2021YFE0110800]
- National Natural Science Foundation of China [52176100, 51506015]
- Natural Science Foundation of Chongqing [cstc2021jcyj-msxmX0247]
- Chinese-Serbian Collaboration Project, Serbia [451-03-1205/2021-09]
Ask authors/readers for more resources
In this study, a catalyst embedded with electrothermal alloy was prepared to widen the operating temperature window of the V2O5-WO3/TiO2 catalyst. The experimental results showed that the electrothermal alloy embedded catalyst maintained superior NH3-SCR performance and high resistance to H2O in a wide temperature range. Additionally, the NH4HSO4 poisoned catalyst could be efficiently regenerated through electric heating.
Vanadia-based catalysts are widely used in selective catalytic reduction (SCR) reaction for reducing nitrogen oxides emissions, however, they only exhibit sufficient DeNO(x) efficiency within a narrow temperature window. In this study, a catalyst embedded with electrothermal alloy was prepared. The catalyst surface temperature could be heated using the electrothermal alloy, in order to widen the operating temperature window of the V2O5-WO3/TiO2 catalyst. Experimental results revealed that the electrothermal alloy embedded V2O5-WO3/TiO2 catalyst can maintain superior NH3-SCR performance and high resistance to H2O in a wide gas temperature range of 100-400 degrees C by controlling the surface temperature. In the meantime, the NH4HSO4 poisoned catalyst could be efficiently regenerated through electric heating, and NOx conversion can be restored to the level of fresh samples. Additionally, the effect of additives including methylcellulose and glass fiber, on the physicochemical properties of the plate-type catalyst was also investigated, and the catalyst samples were characterized by means of BET, XRD, NH3-TPD, H-2-TPR, TG and SEM-EDS. This study proves the electric heating strategy is a promising way to enhance the performance of the V2O5-WO3/TiO2 during wide temperature SCR applications. (C) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available