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Journal of Thermal Science

热科学学报

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2022 , Vol. 31 >Issue 5: 1604 - 1621

DOI: https://doi.org/10.1007/s11630-022-1665-y

燃烧和反应

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

网络出版日期: 2023-12-01

基金资助

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).

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

本文比较了丁烯同分异构燃料(正丁烯、反式-2-丁烯、异丁烯)在CO2气氛下的热解特性。研究重点是在1273 K和1573 K两种温度下，燃料的同分异构结构和CO2的化学作用对重要热解中间产物形成的影响。燃料热解过程中，异丁烯热解形成的各产物浓度均显著低于正丁烯和反式-2-丁烯热解形成的相应产物浓度。各产物的生成或消耗速率由高至低排列为正丁烯>反式-2-丁烯>异丁烯。温度为1573 K时，CO2的化学作用可以抑制乙烯(C2H4)的消耗，促进丁二炔(C4H2)的生成，抑制乙炔(C2H2)和苯(A1)的生成。在1573 K条件下，正丁烯热解过程中，CO2的化学作用主要表现为C2H2和苄基(A1CH2)消耗路径的变化。1573 K时，CO2的加入改变了甲基(CH3)的主要消耗路径，从而抑制了C2H2的生成。此外，在1573 K时，CO2的化学作用显著改变了反式-2-丁烯热解过程中C4H2和A1的消耗路径。1573 K时，CO2的化学作用通过改变C2H2和炔丙基(C3H3)的主要消耗路径，显著抑制了A1的生成。

关键词： butene isomers; pyrolysis; CO2; chemical effect

本文引用格式

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

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).

Key words： butene isomers; pyrolysis; CO2; chemical effect

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