title: Pilot-scale evaluation of a novel TiO2-supported V2O5catalyst for DeNOx at low temperatures at a waste incinerator.
abstract: The removal of NOx by catalytic technology at low temperatures is significant for treatment of flue gas in waste incineration plants, especially at temperatures below 200°C. A novel highly active TiO2-supported vanadium oxide catalyst at low temperatures (200-250°C) has been developed for the selective catalytic reduction (SCR) de-NOx process with ammonia. The catalyst was evaluated in a pilot-scale equipment, and the results were compared with those obtained in our previous work using laboratory scale (small volume test) equipment as well as bench-scale laboratory equipment. In the present work, we have performed our experiments in pilot scale equipment using a part of effluent flue gas that was obtained from flue gas cleaning equipment in a full-scale waste incineration plant in South Korea. Based on our previous work, we have prepared a TiO2-supported V2O5catalyst coated (with a loading of 7wt% of impregnated V2O5) on a honeycomb cordierite monolith to remove NOx from a waste incinerator flue gas at low temperatures. The NOx (nitrogen oxides) removal efficiency of the SCR catalyst bed was measured in a catalyst fixed-bed reactor (flow rate: 100m3h-1) using real exhaust gas from the waste incinerator. The experimental results showed that the V2O5/TiO2SCR catalyst exhibited good DeNOx performance (over 98% conversion at an operating temperature of 300°C, 95% at 250°C, and 70% at 200°C), and was much better than the performance of commercial SCR catalysts (as low as 55% conversion at 250°C) under the same operating conditions.
authors.affiliation: Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea; Green School (Graduate School of Energy and Environment), Korea University-KIST, 145 Anam-ro, Seongbuk-gu, Seoul 136-701, Republic of Korea.
authors.forename: Hyounduk
authors.initials: H
authors.lastname: Jung
authors.affiliation: Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea.
authors.forename: Eunseuk
authors.initials: E
authors.lastname: Park
authors.affiliation: Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea; Green School (Graduate School of Energy and Environment), Korea University-KIST, 145 Anam-ro, Seongbuk-gu, Seoul 136-701, Republic of Korea.
authors.forename: Minsu
authors.initials: M
authors.lastname: Kim
authors.affiliation: Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea; Green School (Graduate School of Energy and Environment), Korea University-KIST, 145 Anam-ro, Seongbuk-gu, Seoul 136-701, Republic of Korea. Electronic address: jongsoo@kist.re.kr.
authors.forename: Jongsoo
authors.initials: J
authors.lastname: Jurng
mesh_terms: D002384:Catalysis; D003080:Cold Temperature; D004867:Equipment Design; D017745:Incineration / Q000295:instrumentation / Q000379:methods*; D009589:Nitrogen Oxides / Q000737:chemistry*; D010865:Pilot Projects; D056910:Republic of Korea; D014025:Titanium / Q000737:chemistry; D017968:Vanadium Compounds / Q000737:chemistry
chemical_list: D009589:Nitrogen Oxides; D017968:Vanadium Compounds; C009495:titanium dioxide; C066075:vanadium pentoxide; D014025:Titanium
keywords: DeNOx; Flue gas; SCR catalyst; TiO(2)-supported V(2)O(5); Waste incinerator