title: Selective autocatalytic reduction of NO from sintering flue gas by the hot sintered ore in the presence of NH3.
abstract: In this paper, the selective autocatalytic reduction of NO by NH3 combined with multi-metal oxides in the hot sintered ore was studied, and the catalytic activity of the hot sintered ore was investigated as a function of temperature, NH3/NO ratio, O2 content, H2O and SO2. The experimental results indicated that the hot sintered ore, when combined with NH3, had a maximum denitration efficiency of 37.67% at 450 °C, 3000 h(-1) gas hourly space velocity (GHSV) and a NH3/NO ratio of 0.4/1. Additionally, it was found that O2 played an important role in removing NOx. However, high O2 content had a negative effect on NO reduction. H2O was found to promote the denitration efficiency in the absence of SO2, while SO2 inhibited the catalytic activity of the sintered ore. In the presence of H2O and SO2, the catalytic activity of the sintered ore was dramatically suppressed.
authors.affiliation: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
authors.forename: Wangsheng
authors.initials: W
authors.lastname: Chen
authors.affiliation: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Luo
authors.affiliation: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
authors.forename: Linbo
authors.initials: L
authors.lastname: Qin
authors.affiliation: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China. Electronic address: hanjun@wust.edu.cn.
authors.forename: Jun
authors.initials: J
authors.lastname: Han
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D000641:Ammonia / Q000737:chemistry*; D002384:Catalysis; D004867:Equipment Design; D008669:Metallurgy / Q000295:instrumentation / Q000379:methods; D008670:Metals / Q000737:chemistry; D009589:Nitrogen Oxides / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D013458:Sulfur Dioxide / Q000737:chemistry; D013696:Temperature; D014867:Water
chemical_list: D000393:Air Pollutants; D008670:Metals; D009589:Nitrogen Oxides; D010087:Oxides; D014867:Water; D013458:Sulfur Dioxide; D000641:Ammonia; D010100:Oxygen
keywords: Denitration; NH(3)-SCR; Sintered ore; Sintering flue gas