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Destruction of Freon HFC-134a Using a Nozzleless Microwave Plasma Source

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Abstract

In this paper, results of the pyrolysis of Freon HFC-134a (tetrafluoroethane C2H2F4) in an atmospheric pressure microwave plasma are presented. A waveguide-based nozzleless cylinder-type microwave plasma source (MPS) was used to produce plasma for the destruction of Freon HFC-134a. The processed gaseous Freon HFC-134a at a flow rate of 50–212 l min−1 was introduced to the plasma by four gas ducts which formed a swirl flow in the plasma reactor (a quartz cylinder). The absorbed microwave power was 0.6–3 kW. The experimental results showed that the Freon was converted into carbon black, hydrogen and fluorine. The total conversion degree of HFC-134a was up to 84% with selectivity of 100% towards H2, F2 and C2, which means that there was no conversion of HFC-134a into other hydrocarbons. The Freon destruction mass rate and corresponding energetic mass yield were up to 34.5 kg h−1 and 34.4 kg per kWh of microwave energy absorbed by the plasma, respectively.

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Acknowledgments

This research was supported by the Ministry of Science and Higher Education (MNiSW) under the programme 3020/T02/2006/31 and by The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences.

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Authors and Affiliations

  1. Centre for Plasma and Laser Engineering, Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-952, Gdańsk, Poland

    Mariusz Jasiński, Mirosław Dors & Jerzy Mizeraczyk

  2. Department of Marine Electronics, Gdynia Maritime University, Morska 83, 81-225, Gdynia, Poland

    Jerzy Mizeraczyk

Authors
  1. Mariusz Jasiński
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  2. Mirosław Dors
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  3. Jerzy Mizeraczyk
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Correspondence to Mariusz Jasiński.

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Jasiński, M., Dors, M. & Mizeraczyk, J. Destruction of Freon HFC-134a Using a Nozzleless Microwave Plasma Source. Plasma Chem Plasma Process 29, 363–372 (2009). https://doi.org/10.1007/s11090-009-9183-1

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  • DOI: https://doi.org/10.1007/s11090-009-9183-1

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