Using modified fly ash for mercury emissions control for coal-fired power plant applications in China

  • Yongzheng Gu, Jiawei Wang, Zhao liu, You Zhang, Yan Cao, Carlos E. Romero, Wei-ping Pan, Shumin Wang, Yongsheng Zhang
  • Fuel, October 2016, Elsevier
  • DOI: 10.1016/j.fuel.2016.02.043

Using modified fly ash control coal-fired power plant mercury emissions in China

What is it about?

Coal-fired power plants also consume more than 50% of the coal used in China. This study reports mercury emissions measurements of several power plants in China. This motivated research on developing and testing a modified fly ash mercury sorbent that would be competitive due to its low cost, in relative abundance, and adequate for convenient injection at a power plant. Full-scale injection and adsorption experiments were performed at a 300 MW plant. It was found that the use of a modified fly ash provide an additional mercury emissions reduction, in addition to the inherent natural mercury capture by the host unit of 30% due to additional fly ash adsorption. Implementation of this additional control option would help achieve combined mercury removal efficiencies in the 75–90% range.

Why is it important?

This motivated research on developing and testing a modified fly ash mercury sorbent that would be competitive due to its low cost, in relative abundance, and adequate for convenient injection at a power plant.

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http://dx.doi.org/10.1016/j.fuel.2016.02.043

The following have contributed to this page: Dr. Yongsheng Zhang