Synergistic effects and kinetics analysis for co-pyrolysis of vacuum residue and plastics

Abstract

This study utilized a thermogravimetric analyzer to assess the thermal decomposition behaviors and kinetics properties of vacuum residue (VR) and low-density polyethylene (LDPE) polymers. The kinetic parameters were calculated using the Friedman technique. To demonstrate the interactive effects between LDPE and VR during the co-pyrolysis process, the disparity in mass loss and mass loss rate between the experimental and calculated values was computed. The co-pyrolysis curves obtained through estimation and experimentation exhibited significant deviations, which were influenced by temperature and mixing ratio. A negative synergistic interaction was observed between LDPE and VR, although this inhibitory effect could be mitigated or eliminated by reducing the LDPE ratio in the mixture and increasing the co-pyrolysis temperature. The co-pyrolysis process resulted in a reduction in carbon residue, which could be attributed to the interaction between LDPE and the heavy fractions, particularly resin and asphaltene, present in VR. These findings align with the pyrolysis behaviors exhibited by the four VR fractions. Furthermore, it was observed that the co-pyrolysis process exhibited lower activation energy as the VR ratio increased, indicating a continuous enhancement in the reactivity of the mixed samples during co-pyrolysis.

Key words： co-pyrolysis; heavy residual oil; polyethylene; thermogravimetric analysis; synergistic effects

Competing interests

The authors declare that they have no competing interests.

Acknowledgements

The authors acknowledge the support from the National Key Research and Development Program of China (Grant No. 2021YFB3801300) and the National Natural Science Foundation of China (Grant No. U22B20149, 22021004).

References

1 Castañeda L C , Muñoz J A D , Ancheyta J . Combined process schemes for upgrading of heavy petroleum. Fuel, 2012, 100: 110–127

2 Al-Samhan M , Al-Fadhli J , Al-Otaibi A M , Al-Attar F , Bouresli R , Rana M S . Prospects of refinery switching from conventional to integrated: an opportunity for sustainable investment in the petrochemical industry. Fuel, 2022, 310: 122161

3 Rana M S , Sámano V , Ancheyta J , Diaz J A I . A review of recent advances on process technologies for upgrading of heavy oils and residua. Fuel, 2007, 86(9): 1216–1231

4 Ore O T , Adebiyi F M . A review on current trends and prospects in the pyrolysis of heavy oils. Journal of Petroleum Exploration and Production Technology, 2021, 11(3): 1521–1530

5 Kamkar M , Natale G . A review on novel applications of asphaltenes: a valuable waste. Fuel, 2021, 285: 119272

6 Li J , Hou H , Shen H . A new insight into compatibility changing rules for inferior vacuum residue’s thermal cracking and hydrocracking process. Journal of Analytical and Applied Pyrolysis, 2022, 167: 105632

7 Che Y , Wang Q , Huo J , Tian Y . Determination of the sensitive fractions for vacuum residue high temperature fast pyrolysis. Fuel, 2021, 299: 120903

8 Xu G , Bai D , Xu C , He M . Challenges and opportunities for engineering thermochemistry in carbon-neutralization technologies. National Science Review, 2023, 10(9): nwac217

9 Kaminski T , Husein M M . Thermal cracking of atmospheric residue versus vacuum residue. Fuel Processing Technology, 2018, 181: 331–339

10 Zhao J , Ren L , Liu T , Dai L , Zhang L , Han W , Li D . An insight into the evolution of sulfur species during the integration process of residue hydrotreating and delayed coking. Industrial & Engineering Chemistry Research, 2020, 59(28): 12719–12728

11 Xing B , Ye L , Liu J , Qin X , Yu W , Xie J , Hou L , Wang H , Ji Y , Lu D , Zhao J , Sun H , Ling H . Reaction network of sulfur compounds in delayed coking process. Chemical Engineering Journal, 2021, 422: 129903

12 Safiri A , Ivakpour J , Khorasheh F . Effect of operating conditions and additives on the product yield and sulfur content in thermal cracking of a vacuum residue from the abadan refinery. Energy & Fuels, 2015, 29(8): 5452–5457

13 Zachariah A , Wang L , Yang S , Prasad V , de Klerk A . Suppression of coke formation during bitumen pyrolysis. Energy & Fuels, 2013, 27(6): 3061–3070

14 Alemán-Vázquez L O , Torres-Mancera P , Muñoz J A D , Ancheyta J . Batch reactor study for partial upgrading of a heavy oil with a novel solid hydrogen transfer agent. Energy & Fuels, 2020, 34(12): 15714–15726

15 Mishra R , Kumar A , Singh E , Kumar S . Recent research advancements in catalytic pyrolysis of plastic waste. ACS Sustainable Chemistry & Engineering, 2023, 11(6): 2033–2049

16 Li N , Liu H , Cheng Z , Yan B , Chen G , Wang S . Conversion of plastic waste into fuels: a critical review. Journal of Hazardous Materials, 2022, 424: 127460

17 Yan N . Recycling plastic using a hybrid process. Science, 2022, 378(6616): 132–133

18 Zhang Y , Fu Z , Wang W , Ji G , Zhao M , Li A . Kinetics, product evolution, and mechanism for the pyrolysis of typical plastic waste. ACS Sustainable Chemistry & Engineering, 2022, 10(1): 91–103

19 Lovett S , Berruti F , Behie L A . Ultrapyrolytic upgrading of pPlastic wastes and plastics/heavy oil mixtures to valuable light gas products. Industrial & Engineering Chemistry Research, 1997, 36(11): 4436–4444

20 Tan X , Zhu C , Liu Q , Ma T , Yuan P , Cheng Z , Yuan W . Co-pyrolysis of heavy oil and low density polyethylene in the presence of supercritical water: the suppression of coke formation. Fuel Processing Technology, 2014, 118: 49–54

21 Rodríguez E , Palos R , Gutiérrez A , Trueba D , Arandes J M , Bilbao J . Towards waste refinery: Co-feeding HDPE pyrolysis waxes with VGO into the catalytic cracking unit. Energy Conversion and Management, 2020, 207: 112554

22 Zhang Q , Li Q , Wang H , Wang Z , Yu Z , Zhang L , Huang W , Fang Y . Experimental study on co-pyrolysis and gasification behaviors of petroleum residue with lignite. Chemical Engineering Journal, 2018, 343: 108–117

23 Muhammad I , Manos G . Catalytic copyrolysis of heavy oil with polypropylene. ACS Sustainable Chemistry & Engineering, 2022, 10(48): 15824–15837

24 Passamonti F J , Sedran U . Recycling of waste plastics into fuels. LDPE conversion in FCC. Applied Catalysis B: Environmental, 2012, 125: 499–506

25 Rodríguez E , Gutiérrez A , Palos R , Vela F J , Azkoiti M J , Arandes J M , Bilbao J . Co-cracking of high-density polyethylene (HDPE) and vacuum gasoil (VGO) under refinery conditions. Chemical Engineering Journal, 2020, 382: 122602

26 Schubert T , Lehner M , Karner T , Hofer W , Lechleitner A . Influence of reaction pressure on co-pyrolysis of LDPE and a heavy petroleum fraction. Fuel Processing Technology, 2019, 193: 204–211

27 Schubert T , Lechleitner A , Lehner M , Hofer W . 4-Lump kinetic model of the co-pyrolysis of LDPE and a heavy petroleum fraction. Fuel, 2020, 262: 116597

28 Sazandehchi P , Ovaysi S . Experimental evaluation and kinetic modeling of thermal upgrading of iranian heavy crude oil. Industrial & Engineering Chemistry Research, 2019, 58(28): 12586–12592

29 Burra K G , Gupta A K . Kinetics of synergistic effects in co-pyrolysis of biomass with plastic wastes. Applied Energy, 2018, 220: 408–418

30 Merdun H , Laouge Z B . Kinetic and thermodynamic analyses during co-pyrolysis of greenhouse wastes and coal by TGA. Renewable Energy, 2021, 163: 453–464

31 Lu K M , Lee W J , Chen W H , Lin T C . Thermogravimetric analysis and kinetics of co-pyrolysis of raw/torrefied wood and coal blends. Applied Energy, 2013, 105: 57–65

32 Biswas S , Mohanty P , Sharma D K . Studies on synergism in the cracking and co-cracking of Jatropha oil, vacuum residue and high density polyethylene: kinetic analysis. Fuel Processing Technology, 2013, 106: 673–683

33 Xia W , Wang S , Wang H , Xu T . Thermal effects of asphalt SARA fractions, kinetic parameter calculation using isoconversional method and distribution models. Journal of Thermal Analysis and Calorimetry, 2021, 146(4): 1577–1592

34 Félix G , Tirado A , Al-Muntaser A , Kwofie M , Varfolomeev M A , Yuan C , Ancheyta J . SARA-based kinetic model for non-catalytic aquathermolysis of heavy crude oil. Journal of Petroleum Science Engineering, 2022, 216: 110845

35 Zhang J , Liu J , Evrendilek F , Zhang X , Buyukada M . TG-FTIR and Py-GC/MS analyses of pyrolysis behaviors and products of cattle manure in CO₂ and N₂ atmospheres: kinetic, thermodynamic, and machine-learning models. Energy Conversion and Management, 2019, 195: 346–359

36 SerranoD PAguadoJEscolaJ MRodríguezJ MMorselliLOrsiR. Thermal and catalytic cracking of a LDPE-EVA copolymer mixture. Journal of Analytical and Applied Pyrolysis, 2003, 68–69: 481–494

37 Chen W , Shi S , Zhang J , Chen M , Zhou X . Co-pyrolysis of waste newspaper with high-density polyethylene: synergistic effect and oil characterization. Energy Conversion and Management, 2016, 112: 41–48

38 Mominou N , Xian S B , Jiaoliang X . Studies on coprocessing vacuum residue oil with plastics using thermogravimetric analysis. Petroleum Science and Technology, 2009, 27(6): 588–596

39 Vo T A , Tran Q K , Ly H V , Kwon B , Hwang H T , Kim J , Kim S S . Co-pyrolysis of lignocellulosic biomass and plastics: a comprehensive study on pyrolysis kinetics and characteristics. Journal of Analytical and Applied Pyrolysis, 2022, 163: 105464

40 Wang Z W , Burra K G , Lei T Z , Gupta A K . Co-pyrolysis of waste plastic and solid biomass for synergistic production of biofuels and chemicals—a review. Progress in Energy and Combustion Science, 2021, 84: 100899

41 Bai F , Zhu C , Liu Y , Yuan P , Cheng Z , Yuan W . Co-pyrolysis of residual oil and polyethylene in sub- and supercritical water. Fuel Processing Technology, 2013, 106: 267–274

42 Kok M V , Gul K G . Thermal characteristics and kinetics of crude oils and SARA fractions. Thermochimica Acta, 2013, 569: 66–70

43 Jiang L , Zhou Z , Xiang H , Yang Y , Tian H , Wang J . Characteristics and synergistic effects of co-pyrolysis of microalgae with polypropylene. Fuel, 2022, 314: 122765

44 Sekyere D T , Zhang J , Chen Y , Huang Y , Wang M , Wang J , Niwamanya N , Barigye A , Tian Y . Production of light olefins and aromatics via catalytic co-pyrolysis of biomass and plastic. Fuel, 2023, 333: 126339