Co-pyrolysis characteristics of typical components of waste plastics in a falling film pyrolysis reactor

doi:10.1016/j.cjche.2018.07.005

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (10): 2176-2184.DOI: 10.1016/j.cjche.2018.07.005

• Energy, Resources and Environmental Technology • 上一篇下一篇

Co-pyrolysis characteristics of typical components of waste plastics in a falling film pyrolysis reactor

Zechen Jin^1,2, Lijie Yin¹, Dezhen Chen¹, Yuanjie Jia¹, Jun Yuan¹, Yuyan Hu¹

1 Thermal and Environmental Engineering Institute, Tongji University, Shanghai 200092, China;
2 Shanghai Municipal Engineering Design Institute(Group) Co., Ltd., Shanghai 200092, China

收稿日期:2018-03-13 修回日期:2018-06-19 出版日期:2018-10-28 发布日期:2018-11-14
通讯作者: Lijie Yin,E-mail address:y_lijie@tongji.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (51503154, 51776141), Major Projects of China Water Pollution Control and Treatment Science and Technology (2017ZX07202005).

Co-pyrolysis characteristics of typical components of waste plastics in a falling film pyrolysis reactor

Zechen Jin^1,2, Lijie Yin¹, Dezhen Chen¹, Yuanjie Jia¹, Jun Yuan¹, Yuyan Hu¹

1 Thermal and Environmental Engineering Institute, Tongji University, Shanghai 200092, China;
2 Shanghai Municipal Engineering Design Institute(Group) Co., Ltd., Shanghai 200092, China

Received:2018-03-13 Revised:2018-06-19 Online:2018-10-28 Published:2018-11-14
Contact: Lijie Yin,E-mail address:y_lijie@tongji.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China (51503154, 51776141), Major Projects of China Water Pollution Control and Treatment Science and Technology (2017ZX07202005).

摘要/Abstract

摘要： Waste plastics mainly come from MSW and usually exist in the form of mixed plastics. During the co-pyrolysis process of mixed plastics, various plastic components have different physicochemical properties and reaction mechanisms. Considering the high viscosity and low thermal conductivity of molten plastics, a falling film pyrolysis reactor was selected to explore the rapid co-pyrolysis process of typical plastic components (PP, PE and PS). The oil and gas yields and the compositions of pyrolysis products of the three components under different ratios at pyrolysis temperatures were analyzed to explore the co-pyrolysis characteristics of PP, PE, and PS. The study is of great significance to the recycling of waste plastics.

关键词: Co-pyrolysis, Falling film reactor, Waste plastics

Abstract: Waste plastics mainly come from MSW and usually exist in the form of mixed plastics. During the co-pyrolysis process of mixed plastics, various plastic components have different physicochemical properties and reaction mechanisms. Considering the high viscosity and low thermal conductivity of molten plastics, a falling film pyrolysis reactor was selected to explore the rapid co-pyrolysis process of typical plastic components (PP, PE and PS). The oil and gas yields and the compositions of pyrolysis products of the three components under different ratios at pyrolysis temperatures were analyzed to explore the co-pyrolysis characteristics of PP, PE, and PS. The study is of great significance to the recycling of waste plastics.

Key words: Co-pyrolysis, Falling film reactor, Waste plastics

Zechen Jin, Lijie Yin, Dezhen Chen, Yuanjie Jia, Jun Yuan, Yuyan Hu. Co-pyrolysis characteristics of typical components of waste plastics in a falling film pyrolysis reactor[J]. Chinese Journal of Chemical Engineering, 2018, 26(10): 2176-2184.

参考文献

[1] F.H. Li, X.Z. Yuan, X.Q. CH, Study on fraction pyrolysis of mixed waste plastics, Chin. Pet. Process Petrochem. Technol. 32(5) (2001) 51-54(in Chinese).

[2] G.M. Richard, M. Mario, T. Javier, T. Susana, Optimization of the recovery of plastics for recycling separation cyclones by density media, Resour. Conserv. Recycl. 55(4) (2011) 472-482.

[3] Y.B. Liu, X.B. Ma, D.Z. Chen, L. Zhao, G.M. Zhou, Copyrolysis characteristics and kinetic analysis of typical constituents of plastic wastes, Proc. CSEE 30(23) (2010) 56-61(in Chinese).

[4] T. Faravelli, B. Giulia, C. Mauro, Kinetic modeling of the thermal degradation of polyethylene and polystyrene mixtures, J. Anal. Appl. Pyrolysis 70(2) (2003) 761-777.

[5] K.C. Nilgun, E. Ekrem, E.S. Colin, Pyrolysis of virgin and waste polypropylene and its mixtures with waste polyethylene and polystyrene, Waste Manag. 24(2) (2004) 173-181.

[6] F. Pinto, P. Costa, I. Gulyurtlu, I. Cabrita, Pyrolysis of plastic wastes. I. Effect of plastic waste composition on product yield, J. Anal. Appl. Pyrolysis 51(1) (1999) 39-55.

[7] A.O. Jude, I. Nagi, T.W. Paul, Composition of products from the pyrolysis of polyethylene and polystyrene in a closed batch reactor:Effects of temperature and residence time, J. Anal. Appl. Pyrolysis 86(2) (2009) 293-303.

[8] L. Zhao, Z.H. Wang, D.Z. Chen, X.B. Ma, J. Luan, Influence of impurities on waste plastics pyrolysis:Products and emissions, Environ. Sci. 33(1) (2012) 329-336(in Chinese).

[9] Z.C. Jin, D.Z. Chen, L.J. Yin, Y.Y. Hu, H.Q. Zhu, L. Hong, Molten waste plastic pyrolysis in a vertical falling film reactor and the influence of temperature on the pyrolysis products, Chin. J. Chem. Eng. 26(2) (2017) 400-406.

[10] N. Mustafa, Plastics waste management:disposal, recycling and reuse, J. Clean. Prod. 2(1) (1993) 58-59.

[11] C.A. Finch, in:R.J. Ehrig (Ed.), Plastics Recycling:Products and Process, Hanser Publisher 1992, p. 136.

[12] X. Shen, Differential Thermal & Thermogravimetric Analysis and Non-isothermal Solid Phase Reaction Kinetics, Metallurgical Industry Press, Beijing, 1995.

[13] L. Zhao, Influence of Impurities on Waste Plastics Pyrolysis and Material Adaptility Investigation during the Process of Waste Plastics Pyrolysis from Municipal Solid Wastes for Producing Oil, (Ph. D. Thesis) Tongji Univ., China, 2011.

[14] C. Albano, E.D. Freitas, Thermogravimetric evaluation of the kinetics of decomposition of polyolefin blends, Polym. Degrad. Stab. 61(2) (1998) 289-295.

[15] W.R. Waldman, M.A.D. Paoli, Thermo-mechanical degradation of polypropylene, low-density polyethylene and their 1:1 blend, Polym. Degrad. Stab. 60(2) (1998) 301-308.

[16] S.E. Levine, L.J. Broadbel, Detailed mechanistic modeling of high-density polyethylene pyrolysis:Low molecular weight product evolution, Polym. Degrad. Stab. 94(5) (2009) 810-822.

[17] R.W.J. Westerhout, J.A.M. Kuipers, W.P.M. Swaaij, Experimental determination of the yield of pyrolysis products of PE and PP-influence of reaction conditions, Ind. Eng. Chem. Res. 37(37) (1998) 841-847.

[18] P. Costa, F. Pinto, A.M. Ramos, I. Gulyurtlu, I. Cabrita, M.S. Bernardo, Study of the pyrolysis kinetics of a mixture of polyethylene, polypropylene, and polystyrene, Energy Fuel 24(12) (2010) 6239-6247.

[19] S.L. Wong, N. Ngadi, T.A.T. Abdullah, I.M. Inuwa, Current state and future prospects of plastic wastes source of fuel:A review, Renew. Sust. Energ. Rev. 50(C) (2015) 1167-1180.

[20] W. Kaminsky, J.S. Kim, Pyrolysis of mixed plastics into aromatics, J. Anal. Appl. Pyrolysis 51(51) (1999) 127-134.

[21] R. Aguado, M.N. Olazar, B. Gaisán, R. Prieto, J. Bilbao, Kinetics of polystyrene pyrolysis in a conical spouted bed reactor, Chem. Eng. J. 92(1-3) (2003) 91-99.

[22] M. Sarker, M.M. Rashid, M. Molla, Waste polypropylene plastic conversion into liquid hydrocarbon fuel for producing electricity and energies, Environ. Technol. 33(24) (2012) 2709-2721.

[23] E. Gorka, O. Martin, L. Gartzen, A. Maite, B. Javier, Product yields and compositions in the continuous pyrolysis high-density polyethylene in a conical spouted bed reactor, Ind. Eng. Chem. Res. 50(11) (2011) 6650-6659.

[24] G.P. Lovasic, N. Jambrec, D.D. Siftar, M.V. Prostenik, Determination of catalytic reformed gasoline octane number by high resolution gas chromatography, Fuel 69(4) (1990) 525-528.

[25] X.D. Jing, Y.H. Zhao, H. Wen, Interactions between low-density polyethylene (LDPE) and polypropylene (PP) during the mild cracking of polyolefin mixtures in a closedbatch reactor, Energy Fuel 27(10) (2013) 5841-5851.

Co-pyrolysis characteristics of typical components of waste plastics in a falling film pyrolysis reactor

Co-pyrolysis characteristics of typical components of waste plastics in a falling film pyrolysis reactor

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