Analysis of the thermal behavior of a fixed bed reactor during the pyrolysis process Original scientific paper

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Milica Đurđević
Saša Papuga
Aleksandra Kolundžija


Pyrolysis is a thermochemical process of degradation of organic compounds where the reaction takes place in an inert atmosphere. The process scale varies between industrial, semi-industrial or laboratory. During the pyrolysis process temperature has to be controlled, but, most of pyrolysis studies do not clearly state where the temperature is measured and weather the temperature field is uniform. In this paper thermal behavior of a laboratory scale fixed-bed reactor and energy consumption during pyrolysis processes were analyzed. Three different samples were used: mixture of plastic waste (sample 1), biomass (sample 2) and mixture of plastic waste and biomass (sample 3). The analysis of the thermal behavior of the reactor indicates that with careful regulation or temperature control of the process, one can obtain diagrams that can be used for the purpose of recording thermally intensive processes, similar to more complex thermogravimetric (TG) and derivative thermogravi­metric (DTG) analyses. It has been shown that it is possible to change the heating rate and the overall energy efficiency of the process by simply choosing the appropriate raw material mixture.

osing the appropriate raw material mixture.


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Đurđević, M., Papuga, S., & Kolundžija, A. (2023). Analysis of the thermal behavior of a fixed bed reactor during the pyrolysis process: Original scientific paper. HEMIJSKA INDUSTRIJA (Chemical Industry), 78(1), 29–40.
Chemical Engineering - Process Modeling


Miandad R, Barakat MA, Aburiazaiza AS, Rehan M, Nizami AS. Catalytic pyrolysis of plastic waste: A review. Process Saf Environ Prot. 2016; 102: 822-38.

Xue Y, Johnston P, Bai X. Effect of catalyst contact mode and gas atmosphere during catalytic pyrolysis of waste plastics. Energy Convers Manag. 2017; 142: 441-51.

Marcilla A, Gómez-Siurana A, Berenguer D. Study of the influence of the characteristics of different acid solids in the catalytic pyrolysis of different polymers. Appl Catal Gen. 2006; 301(2): 222-31.

Sharma A, Pareek V, Zhang D. Biomass pyrolysis—A review of modelling, process parameters and catalytic studies. Renew Sustain Energy Rev. 2015; 50: 1081-96.

Gvero P, Mujanić I, Papuga S, Vasković S, Anatunović R. Review of Synthetic Fuels and New Materials Production Based on Pyrolysis Technologies. In: Pellicer E, Nikolic D, Sort J, Baró M, Zivic F, Grujovic N, et al., editors. Advances in Applications of Industrial Biomaterials [Internet]. Cham: Springer International Publishing; 2017; . 65-85. Available from:

Almeida D, Marques M de F. Thermal and catalytic pyrolysis of plastic waste. Polímeros. 2016; 26(1): 44-51.

Gvero P, Papuga S, Mujanic I, Vaskovic S. Pyrolysis as a key process in biomass combustion and thermochemical conversion. Therm Sci. 2016; 20(4): 1209-22.

Kyaw KT, Hmwe CSS. Effect of various catalysts on fuel oil pyrolysis process of mixed plastic wastes. Int J. Adv. Eng. Technol. 2015; 8(5): 9.

Babu BV. Biomass pyrolysis: a state-of-the-art review. Biofuels Bioprod Biorefining. 2008; 2(5): 393-414.

Armenise S, SyieLuing W, Ramírez-Velásquez JM, Launay F, Wuebben D, Ngadi N, Rams J, Munoz M. Plastic waste recycling via pyrolysis: A bibliometric survey and literature review. J Anal Appl Pyrolysis. 2021; 158: 105265.

Kunwar B, Cheng HN, Chandrashekaran SR, Sharma BK. Plastics to fuel: a review. Renew Sustain Energy Rev. 2016; 54: 421-8.

Vijayakumar A, Sebastian J. Pyrolysis process to produce fuel from different types of plastic - a review. In: IOP Conf Ser Mater Sci Eng. Kerala State, India, 2018; 396: 012062.

Lopez G, Artetxe M, Amutio M, Bilbao J, Olazar M. Thermochemical routes for the valorization of waste polyolefinic plastics to produce fuels and chemicals. A review. Renew Sustain Energy Rev. 2017 Jun; 73: 346-68.

Sharuddin SDA, Abnisa F, Daud WMAW, Aroua MK. Pyrolysis of plastic waste for liquid fuel production as prospective energy resource. In: IOP Conf Ser Mater Sci Eng. Banda Aceh, India, 2018; 334: 012001.

Maqsood T, Dai J, Zhang Y, Guang M, Li B. Pyrolysis of plastic species: A review of resources and products. J Anal Appl Pyrolysis. 2021; 159: 105295.

Aguado J, Serrano DP, Escola JM. Fuels from Waste Plastics by Thermal and Catalytic Processes: A Review. Ind Eng Chem Res. 2008; 47(21): 7982-92.

Budsaereechai S, Hunt AJ, Ngernyen Y. Catalytic pyrolysis of plastic waste for the production of liquid fuels for engines. RSC Adv. 2019; 9(10): 5844-57.

Suhartono, Kusumo P, Romli A, Aulia MI, Yanuar EM. Fuel Oil from Municipal Plastic Waste through Pyrolysis with and without Natural Zeolite as Catalysts. Hadiyanto, Maryono, Warsito B, editors. E3S Web Conf. 2018; 73: 01021.

Pinto F, Costa P, Gulyurtlu I, Cabrita I. Pyrolysis of plastic wastes 2. Effect of catalyst on product yield. J Anal Appl Pyrolysis. 1999; 51: 57-71.

Uthpalani PGI, Premachandra JK, De Silva DSM, Weerasinghe VPA. Pyrolysis as a value added method for plastic waste management: A review on converting LDPE and HDPE waste into fuel [Internet]. In Review; 2022 Jul [cited 2022 Oct 4]. Available from:

Kalargaris I, Tian G, Gu S. Combustion, performance and emission analysis of a DI diesel engine using plastic pyrolysis oil. Fuel Process Technol. 2017; 157: 108-15.

Kalargaris I, Tian G, Gu S. The utilisation of oils produced from plastic waste at different pyrolysis temperatures in a DI diesel engine. Energy. 2017; 131: 179-85.

Kalargaris I, Tian G, Gu S. Investigation on the long-term effects of plastic pyrolysis oil usage in a diesel engine. Energy Procedia. 2017; 142: 49-54.

Kalargaris I, Tian G, Gu S. Experimental characterisation of a diesel engine running on polypropylene oils produced at different pyrolysis temperatures. Fuel. 2018; 211: 797-803.

Kremer I, Tomić T, Katančić Z, Erceg M, Papuga S, Vuković JP, Schneider DR. Catalytic pyrolysis of mechanically non-recyclable waste plastics mixture: Kinetics and pyrolysis in laboratory-scale reactor. J Environ Manage. 2021; 296: 113145.

Kremer I, Tomić T, Katančić Z, Hrnjak-Murgić Z, Erceg M, Schneider DR. Catalytic decomposition and kinetic study of mixed plastic waste. Clean Technol Environ Policy. 2021; 23(3): 811-27.

Kremer I, Tomić T, Katančić Z, Hrnjak-Murgić Z, Erceg M, Vecchio Ciprioti S, Schneider DR. Effect of Zeolite Catalyst on the Pyrolysis Kinetics of Multi-Layered Plastic Food Packaging. Symmetry. 2022; 14(7): 1362.

Papuga S, Gvero P, Vukic L. Temperature and time influence on the waste plastics pyrolysis in the fixed bed reactor. Therm Sci. 2016; 20(2): 731-41.

Dewangga PB, Rochmadi, Purnomo CW. Pyrolysis of polystyrene plastic waste using bentonite catalyst.In: IOP Conf Ser Earth Environ Sci. Bogor, Indonesia, 2019; 399(1): 012110.

Papuga S, Djurdjevic M, Ciccioli A, Vecchio Ciprioti S. Catalytic Pyrolysis of Plastic Waste and Molecular Symmetry Effects: A Review. Symmetry. 2022; 15(1): 38.

Fadillah G, Fatimah I, Sahroni I, Musawwa MM, Mahlia TMI, Muraza O. Recent Progress in Low-Cost Catalysts for Pyrolysis of Plastic Waste to Fuels. Catalysts. 2021; 11(7): 837.

Garcia-Nunez JA, Pelaez-Samaniego MR, Garcia-Perez ME, Fonts I, Abrego J, Westerhof RJM, et al. Historical Developments of Pyrolysis Reactors: A Review. Energy Fuels. 2017; 31(6): 5751-75.

Gholizadeh M, Li C, Zhang S, Wang Y, Niu S, Li Y, et al. Progress of the development of reactors for pyrolysis of municipal waste. Sustain Energy Fuels. 2020; 4(12): 5885-915.

Kabir G, Mohd Din AT, Hameed BH. Pyrolysis of oil palm mesocarp fiber and palm frond in a slow-heating fixed-bed reactor: A comparative study. Bioresour Technol. 2017; 241: 563-72.

Wang Z, Cao J, Wang J. Pyrolytic characteristics of pine wood in a slowly heating and gas sweeping fixed-bed reactor. J Anal Appl Pyrolysis. 2009; 84(2): 179-84.

Kremer I, Tomić T, Katančić Z, Erceg M, Papuga S, Parlov Vuković J, Schneider DR. Catalytic pyrolysis and kinetic study of real-world waste plastics: multi-layered and mixed resin types of plastics. Clean Technol Environ Policy. 2022; 24(2): 677-93.

Selpiana, Aprianti T, Rayosa I, Fuspitasarie D. Expanded polystyrene and multilayer plastic waste conversion into liquid fuel by the pyrolysis process. In Surakarta, Indonesia; 2018 [cited 2022 Oct 7]. p. 020151. Available from:

Bridgwater AV, Meier D, Radlein D. An overview of fast pyrolysis of biomass. Org Geochem. 1999; 30(12): 1479-93.

Lee CG, Cho YJ, Song PS, Kang Y, Kim JS, Choi MJ. Effects of temperature distribution on the catalytic pyrolysis of polystyrene waste in a swirling fluidized-bed reactor. Catal Today. 2003; 79-80: 453-64.

Pandey U, Stormyr JA, Hassani A, Jaiswal R, Haugen HH, Moldestad BME. Pyrolysis of plastic waste to environmentally friendly products. In 2020 [cited 2022 Aug 15]. p. 61-74. Available from:

Hartulistiyoso E, Sigiro FAPAG, Yulianto M. Temperature Distribution of the Plastics Pyrolysis Process to Produce Fuel at 450oC. Procedia Environ Sci. 2015; 28: 234-41.

Bockhorn H, Hornung A, Hornung U, Jakobströer P. Modelling of isothermal and dynamic pyrolysis of plastics considering non-homogeneous temperature distribution and detailed degradation mechanism. J Anal Appl Pyrolysis. 1999; 49(1-2): 53-74.

Chen D, Zheng Y, Zhu X. In-depth investigation on the pyrolysis kinetics of raw biomass. Part I: Kinetic analysis for the drying and devolatilization stages. Bioresour Technol. 2013; 131: 40-6.

Swamardika IBA, Winaya INS, Hartati RS. Utilization plastic waste using pyrolysis fixed bed. In: IOP Conf. Ser. Mater Sci Eng. Bali, Indonesia, 2019; 9.

Xingzhong Y. Converting Waste Plastics into Liquid Fuel by Pyrolysis: Developments in China. In: Scheirs J, Kaminsky W, editors. Feedstock Recycling and Pyrolysis of Waste Plastics [Internet]. Chichester, UK: John Wiley & Sons, Ltd; 2006 [cited 2022 Aug 15]. p. 729-55. Available from:

Gao F. Pyrolysis of Waste Plastics into Fuels. Dissertation, 2010; Available from:

Abdullah NA, Novianti A, Hakim II, Putra N, Koestoer RA. Influence of temperature on conversion of plastics waste (polystyrene) to liquid oil using pyrolysis process. IOP Conf Ser Earth Environ Sci. 2018; 105: 012033.

Job S, Mativenga P, Shuaib NA, Oliveux G, Leeke G, Pickering S. Composites Recycling - Where are we now? Composites UK. 2016.

van Oudheusden AA. Recycling of composite materials. :68. Student thesis.