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A Prototype Reactor Promoting the Hg(0) Capture in the Simulated Flue Gas from Small-Scale Boilers by Using Copper Oxide- and Copper Sulfide-Coated Teflon Pipes

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  • Yinyou Deng

    (Faculty of Energy and Fuels, AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Kraków, Poland)

  • Jerzy Górecki

    (Faculty of Energy and Fuels, AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Kraków, Poland)

  • Katarzyna Szramowiat-Sala

    (Faculty of Energy and Fuels, AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Kraków, Poland)

  • Mariusz Macherzynski

    (Faculty of Energy and Fuels, AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Kraków, Poland)

Abstract

In this study, we designed a prototype reactor, the multiple pipes reactor (MPR), for Hg(0) capture, which can be applied in small-scale boilers. It was tested on a laboratory scale by comparing it with a fixed-bed type, the vertical glass reactor (VGR). In total, 200 mg of CuO and CuS was applied as sorbent materials to reduce the concentration of Hg(0) from the simulated flue gas, in both VGR and MPR reactors. The mercury capture measurements were performed in the same laboratory system at 125 °C and a flow rate of 54 L/h. The contact time between the sorbents and simulated flue gas in the VGR was 0.035 s for both materials. In the case of the MPR, it was 0.44 s (CuO coating) and 0.63 s (CuS coating), depending on the coating area. The contact area inside the VGR was 5.31 cm 2 , contrasting with the values of 13.19 cm 2 (CuO coating) and 18.84 cm 2 (CuS coating) in the MPRs. The average Hg(0) capture effectiveness of CuO (granulate) and CuS (granulate) was 51% and 67% in VGR, respectively. The MPR with CuO- and CuS-coating Teflon (PTFE) pipes promoted an average Hg(0) capture effectiveness reaching 65 (by 268%) and 94% (by 158%), respectively.

Suggested Citation

  • Yinyou Deng & Jerzy Górecki & Katarzyna Szramowiat-Sala & Mariusz Macherzynski, 2024. "A Prototype Reactor Promoting the Hg(0) Capture in the Simulated Flue Gas from Small-Scale Boilers by Using Copper Oxide- and Copper Sulfide-Coated Teflon Pipes," Energies, MDPI, vol. 17(5), pages 1-18, March.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:5:p:1236-:d:1351371
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    1. Zheng, Shu & Liu, Hao & He, Yuzhen & Yang, Yu & Sui, Ran & Lu, Qiang, 2023. "Combustion of biomass pyrolysis gas: Roles of radiation reabsorption and water content," Renewable Energy, Elsevier, vol. 205(C), pages 864-872.
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