Combustion and reaction

Kinetic Analysis on Pyrolysis Characteristics of Butene Isomer Fuels with CO2 Additions

  • CHEN Chen ,
  • ZHAO Rui ,
  • YING Yaoyao ,
  • LIU Dong
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  • 1. MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
    2. Advanced Combustion Laboratory, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Online published: 2023-12-01

Supported by

This work was supported by the National Key Research and Development Program of China (2018YFB0605200) and National Natural Science Foundation of China (51822605) and the Fundamental Research Funds for the Central Universities (30920031103, 30919011284).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2022

Abstract

This article compared the pyrolysis characteristics of butene isomer fuels (n-butene, trans-2-butene, isobutene) under CO2 atmosphere. The focus of the study was on the impacts of fuels isomerization and CO2 chemistry on the formation of important pyrolysis intermediate products under two temperature conditions (at 1273 K and 1573 K). The results demonstrated that at 1273 K, the concentrations of all products in isobutene pyrolysis were significantly lower than those of the corresponding products formed by the pyrolysis of n-butene and trans-2-butene in the process of fuels pyrolysis. The generation or consumption rate of each species was arranged from high to low as n-butene>trans-2-butene>isobutene. At 1573 K, the chemical effect of CO2 could inhibit the consumption of ethylene (C2H4), promote the formation of diacetylene (C4H2), and inhibit the formation of acetylene (C2H2) and benzene (A1). During the pyrolysis of n-butene at 1573 K, the chemical effect of CO2 was mainly reflected in changes of the consumption paths of C2H2 and benzyl (A1CH2). For trans-2-butene pyrolysis at 1573 K, CO2 addition could change the main consumption paths of methyl (CH3), which then inhibited C2H2 formation. In addition, CO2 chemical action significantly changed the consumption paths of C4H2 and A1 in trans-2-butene pyrolysis at 1573 K. As for isobutene pyrolysis at 1573 K, the chemical effect of CO2 significantly inhibited the production of A1 by changing the main consumption paths of C2H2 and propargyl (C3H3).

Cite this article

CHEN Chen , ZHAO Rui , YING Yaoyao , LIU Dong . Kinetic Analysis on Pyrolysis Characteristics of Butene Isomer Fuels with CO2 Additions[J]. Journal of Thermal Science, 2022 , 31(5) : 1604 -1621 . DOI: 10.1007/s11630-022-1665-y

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