The honeycomb deNOx catalyst was fabricated by coating the 4%V2O5?4%MoO3?5%WO3/TiO2 catalyst slurry on the cheap honeycomb substrate. The results showed that monolithic coating catalyst with thickness of 110 ?m showed nearly the same deNOx activity as the conventional extruded honeycomb catalyst. However, the usage of expensive active components only accounted for 12.8% raw material needed for the extruded catalyst, which significantly decreased the catalyst costs. The catalyst showed extraordinary SO2/H2O-resistant stability at 250℃ during the 100 h discontinuous test with excellent intensity and wearability. The pilot test of the coating catalyst over the flue gas from glass kiln exhibited excellent deNOx performance with above 80% NO conversion rate and less than 3?10?6(?) NH3 escape during the 1100 h stable test under the conditions of 2800 mg/Nm3 inlet NOx concentration, 240?300℃ and 7150 h?1 GHSV.
Hong ZENG Pingle LIU Yusheng ZHANG Changming LI Jian YU Guangwen XU Shiqiu GAO
. Development and Pilot Test of Surface-coating SCR Denitration Catalyst at Low Temperature[J]. The Chinese Journal of Process Engineering, 2017
, 17(6)
: 1208
-1216
.
DOI: 10.12034/j.issn.1009-606X.217141
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