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The energy consumption and environmental impacts of SCR technology in China

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  • Liang, Zengying
  • Ma, Xiaoqian
  • Lin, Hai
  • Tang, Yuting

Abstract

Energy and environment are drawing greater attention today, particularly with the rapid development of the economy and increase consumption of energy in China. At present, coal-fired power plants are mainly responsible for atmospheric air pollution. The selective catalytic reduction (SCR) technology is a highly effective method for NOX control. The present study identified and quantified the energy consumption and the environmental impacts of SCR system throughout the whole life cycle, including production and transportation of manufacturing materials, installation and operation of SCR technology. The analysis was conducted with the utilization of life cycle assessment (LCA) methodology which provided a quantitative basis for assessing potential improvements in the environmental performance of the system. The functional unit of the study was 5454Â t NOX emission from an existing Chinese pulverized coal power plant for 1Â year. The current study compared life cycle emissions from two types of de-NOX technologies, namely the SCR technology and the selective non-catalytic reduction (SNCR) technology, and the case that NOX was emitted into atmosphere directly. The results showed that the environmental impact loading resulting from SCR technology (66810 PET2000) was smaller than that of flue gas emitted into atmosphere directly (164121 PET2000) and SNCR technology (105225 PET2000). More importantly, the SCR technology is much more effective at the elimination of acidification and nutrient enrichment than SNCR technology and the case that NOX emitted into atmosphere directly. This SCR technology is more friendly to the environment, and can play an important role in NOX control for coal-fired power plants as well as industrial boilers.

Suggested Citation

  • Liang, Zengying & Ma, Xiaoqian & Lin, Hai & Tang, Yuting, 2011. "The energy consumption and environmental impacts of SCR technology in China," Applied Energy, Elsevier, vol. 88(4), pages 1120-1129, April.
    • Handle: RePEc:eee:appene:v:88:y:2011:i:4:p:1120-1129
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    References listed on IDEAS

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