Thermal destruction of polymers: analysis of the process physicochemical parameters

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.238952

Keywords:

solid household waste, destruction, pyrolysis, synthesis gas, hydrocarbons, polymers

Abstract

This experimental study has confirmed that during thermal decomposition of polymeric waste samples at a temperature of 850 °C, without oxygen access, there is a 90 % drop in the mass of this waste with the release of a large volume of gaseous products. This feature should be taken into consideration in the engineering calculations of reaction chambers, reactors, and connecting gas pipelines. The analytical study was carried out by a method of thermodynamic analysis using the universal estimation system Astra (TERRA). It has been shown that with an increase in reaction temperature there is a change in the composition of the products of thermal destruction of polymeric waste by reducing the mole fraction of СН4 and increasing the proportion of Н2. The calorific value was calculated according to Mendeleev’s empirical formula. The experimental study (a pyrolysis-gas chromatography method) has confirmed the calculation results regarding an increase in the proportion of hydrogen in the gaseous products of destruction with an increase in process temperature. As a result, due to the lower volumetric heat of hydrogen combustion, the total caloric content of the synthesis gas obtained is significantly reduced. For the experiments, a laboratory installation of low-temperature pyrolysis of polymers with external supply of thermal energy was built, and synthesis gas was used as an energy carrier.

At the experimental-industrial installation, by a low-temperature pyrolysis method, the synthesis gas of a stable composition with a lower heat of combustion of 24.8 kJ/m3 was obtained. The reliability of the results of the proposed estimation method to the results of instrumental measurements has been shown.

Promising areas of further studies have been determined, including the optimization of processes of thermal destruction of chlorine-containing polymer waste; the effective use of hydrogen from the composition of the synthesis gas obtained.

Author Biographies

Oleksii Sezonenko, The Gas Institute of the National Academy of Sciences of Ukraine

Researcher

Department of Problems of Industrial Heat Engineering

Oleksii Vasechko, The Gas Institute of the National Academy of Sciences of Ukraine

Junior Researcher

Department of Problems of Industrial Heat Engineering

Viktor Aleksyeyenko, The Gas Institute of the National Academy of Sciences of Ukraine

PhD, Senior Researcher

Department of Problems of Industrial Heat Engineering

References

  1. Martignon, G. P.; Johansson, I., Edo, M. (Eds.) (2020). Report on Trends in the use of solid recovered fuels. IEA Bioenergy. Available at: https://www.ieabioenergy.com/wp-content/uploads/2020/05/Trends-in-use-of-solid-recovered-fuels-Main-Report-Task36.pdf
  2. Plastics - the Facts 2020. PlasticsEurope. Available at: https://www.plasticseurope.org/application/files/5716/0752/4286/AF_Plastics_the_facts-WEB-2020-ING_FINAL.pdf
  3. Ciuffi, B., Chiaramonti, D., Rizzo, A. M., Frediani, M., Rosi, L. (2020). A Critical Review of SCWG in the Context of Available Gasification Technologies for Plastic Waste. Applied Sciences, 10 (18), 6307. doi: https://doi.org/10.3390/app10186307
  4. Comanita, E.-D., Hlihor, R. M., Ghinea, C., Gavrilescu, M. (2016). Occurrence of plastic waste in the environment: ecological and health risks. Environmental Engineering and Management Journal, 15 (3), 675–685. doi: https://doi.org/10.30638/eemj.2016.073
  5. Singh, D., Sotiriou, G. A., Zhang, F., Mead, J., Bello, D., Wohlleben, W., Demokritou, P. (2016). End-of-life thermal decomposition of nano-enabled polymers: effect of nanofiller loading and polymer matrix on by-products. Environmental Science: Nano, 3 (6), 1293–1305. doi: https://doi.org/10.1039/c6en00252h
  6. Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions. A European Strategy for Plastics in a Circular Economy (2018). COM/2018/028 final. European Commission. Available at: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=COM:2018:28:FIN
  7. Saebea, D., Ruengrit, P., Arpornwichanop, A., Patcharavorachot, Y. (2020). Gasification of plastic waste for synthesis gas production. Energy Reports, 6, 202–207. doi: https://doi.org/10.1016/j.egyr.2019.08.043
  8. Wróblewska-Krepsztul, J., Rydzkowski, T. (2020). Pyrolysis and incineration in polymer waste management system. Journal of Mechanical and Energy Engineering, 3 (4), 337–342. doi: https://doi.org/10.30464/jmee.2019.3.4.337
  9. Posada, E., Saenz, G. (2019). Waste to Energy and Syngas. Sustainable Alternative Syngas Fuel [Working Title]. doi: https://doi.org/10.5772/intechopen.85848
  10. Fedorov, L. A. (1993). Dioksiny kak ekologicheskaya opasnost': Retrospektiva i perspektivy. Moscow: Nauka, 266.
  11. Karp, I. N., Vasechko, A. A., Alekseenko, V. V., Sezonenko, A. B. (2011). Tekhnologii utilizatsii meditsinskih othodov. Energotekhnologii i resursosberezhenie, 3, 43–48.
  12. Vasechko, O. O., Sezonenko, O. B., Aleksieienko, V. V., Samokatov, K. A. (2019). Utylizatsiya polimernykh ta ridkykh medychnykh spyrtomisnykh vidkhodiv. Zb. tez XXXVII naukovo-tekhnichnoi konferentsiyi molodykh vchenykh ta spetsialistiv Instytutu problem modeliuvannia v enerhetytsi im. H.Ye. Pukhova NAN Ukrainy. Kyiv, 73–75. Available at: https://ipme.kiev.ua/wp-content/uploads/2019/05/%D0%9C%D0%B0%D1%82%D0%B5%D1%80%D1%96%D0%B0%D0%BB%D0%B8-%D0%BA%D0%BE%D0%BD%D1%84%D0%B5%D1%80%D0%B5%D0%BD%D1%86%D1%96%D1%97-2019.pdf
  13. Aleksieienko, V. V., Vasechko, O. O., Sezonenko, O. B. (2021). Pat. No. 148052. Ustanovka dlia utylizatsiyi vidkhodiv, shcho mistiat vuhlevoden. No. u202100537; declareted: 09.02.2021; published: 30.06.2021, Bul. No. 26. Available at: https://base.uipv.org/searchINV/search.php?action=viewdetails&IdClaim=276891&sid=678651d55fe4935ea5ae1eeea0b1fa15
  14. Ustinov, V. A., Kozlita, A. N., Lyulkin, M. S. (2011). Accounting chemistry of the process when selecting the temperature regime in the pyrolysis unit. Elektronniy nauchniy zhurnal «Neftegazovoe delo», 3, 208–214. Available at: https://pdf.zlibcdn.com/dtoken/472649e9e9385da0fe9731b14041ee6d/Vuebor_temperaturnogo_rezhima_v_apparate_piroliza__3184328_(z-lib.org).pdf
  15. PSA Hydrogen Purification Plants | Mahler AGS. Available at: https://www.mahler-ags.com/hydrogen/hydroswing/

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Published

2021-08-30

How to Cite

Sezonenko, O., Vasechko, O., & Aleksyeyenko, V. (2021). Thermal destruction of polymers: analysis of the process physicochemical parameters . Eastern-European Journal of Enterprise Technologies, 4(10(112), 31–37. https://doi.org/10.15587/1729-4061.2021.238952