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Mechanisms and kinetics of thermal reactions of aromatic hydrocarbons from pyrolysis of solid fuels

Title data

Jess, Andreas:
Mechanisms and kinetics of thermal reactions of aromatic hydrocarbons from pyrolysis of solid fuels.
In: Fuel. Vol. 75 (1996) Issue 12 . - pp. 1441-1448.
ISSN 1873-7153
DOI: https://doi.org/10.1016/0016-2361(96)00136-6

Official URL: Volltext

Abstract in another language

The kinetics of the thermal conversion of aromatic hydrocarbons in the presence of hydrogen and steam were studied, using anphthalene, toluene and benzene as model compounds. The experiments were performed in a tubular flow reactor at a total pressure of 160 KPa, temperatures of 700–1400°C, residence times of 0.3–2 s and different gas-phase concentrations of hydrogen, steam and the aromatics. The mechanisms of primary and consecutive reactions are presented as reaction schemes that are supported by kinetic calculations. The following order of reactivity is obtained: toluene ⪢ naphthalene > benzene. Besides gaseous organic cracking products such as methane and ethene, condensed products and a carbonaceous residue (soot) is formed, principally from naphthalene. Soot formation is strongly inhibited by hydrogen. Steam has only a little influence on the conversion of the aromatics. Under the given reaction conditions, neither the soot primarily formed nor the organic cracking products such as methane are completely converted by steam to carbon monoxide and hydrogen, even at the highest temperature investigated (1400°C).

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Aromatic Hydrocarbons; Pyrolysis; Kinetics
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Faculties
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 05 May 2015 09:00
Last Modified: 08 May 2015 11:09
URI: https://eref.uni-bayreuth.de/id/eprint/11759