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Experimental study on removals of SO^sub 2^ and NO^sub X^ using adsorption of activated carbon/microwave desorption

Ma, Shuang-chen ; Yao, Juan-juan ; Gao, Li ; Ma, Xiao-ying ; Zhao, Yi

Journal of the Air & Waste Management Association (1995), 2012-09, Vol.62 (9), p.1012 [Periódico revisado por pares]

Pittsburgh: Taylor & Francis Ltd

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  • Título:
    Experimental study on removals of SO^sub 2^ and NO^sub X^ using adsorption of activated carbon/microwave desorption
  • Autor: Ma, Shuang-chen ; Yao, Juan-juan ; Gao, Li ; Ma, Xiao-ying ; Zhao, Yi
  • Assuntos: Activated carbon ; Adsorption ; Decomposition ; Efficiency ; Flue gas ; High temperature ; Microwave heating ; Monitoring systems ; Scanning electron microscopy ; Studies
  • É parte de: Journal of the Air & Waste Management Association (1995), 2012-09, Vol.62 (9), p.1012
  • Descrição: Experimental studies on desulfurization and denitrification were carried out using activated carbon irradiated by microwave. The influences of the concentrations of nitric oxide (NO) and sulfur dioxide (SO^sub 2^), the flue gas coexisting compositions, on adsorption properties of activated carbon and efficiencies of desulfurization and denitrification were investigated. The results show that adsorption capacity and removal efficiency of NO decrease with the increasing of SO^sub 2^ concentrations in flue gas; adsorption capacity of NO increases slightly first and drops to 12.79 mg/g, and desulfurization efficiency descends with the increasing SO^sub 2^ concentrations. Adsorption capacity of SO^sub 2^ declines with the increasing of O^sub 2^ content in flue gas, but adsorption capacity of NO increases, and removal efficiencies of NO and SO^sub 2^ could be larger than 99%. Adsorption capacity of NO declines with the increase of moisture in the flue gas, but adsorption capacity of SO^sub 2^ increases and removal efficiencies of NO and SO^sub 2^ would be relatively stable. Adsorption capacities of both NO and SO^sub 2^ decrease with the increasing of CO^sub 2^ content; efficiencies of desulfurization and denitrification augment at the beginning stage, then start to fall when CO^sub 2^ content exceeds 12.4%. The mechanisms of this process are also discussed. The prominent SO^sub 2^ and NOx treatment techniques in power plants are wet flue gas desulfurization (FGD) and the catalytic decomposition method like selective catalytic reduction (SCR) or nonselective catalytic reduction (NSCR). However, these processes would have some difficulties in commercial application due to their high investment, requirement of expensive catalysts and large-scale equipment, and so on. A simple SO^sub 2^ and NOx reduction utilizing decomposition by microwave energy method can be used. The pollutants control of flue gas in the power plants by the method of microwave-induced decomposition using adsorption of activated carbon/microwave desorption can meet the requirements of environmental protection, which will be stricter in the future. [PUBLICATION ABSTRACT]
  • Editor: Pittsburgh: Taylor & Francis Ltd
  • Idioma: Inglês
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