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A new comprehensive reaction mechanism for combustion of hydrocarbon fuels

✍ Scribed by E. Ranzi; A. Sogaro; P. Gaffuri; G. Pennati; C.K. Westbrook; W.J. Pitz

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
797 KB
Volume
99
Category
Article
ISSN
0010-2180

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✦ Synopsis

A detailed chemical kinetic model has been developed that accurately describes pyrolysis, ignition and oxidation of many small hydrocarbon fuels over a wide range of experimental conditions. Fuels include carbon monoxide and hydrogen methane, and other alkane species up to n-butane, ethylene, propene, acetylene, and oxygenated species such as methanol, acetaldehyde, and ethanol. Formation of some larger intermediate and product species including benzene, butadiene, large olefins, and cyclopentadiene has been treated in a semiempirical manner. The reaction mechanism has been tested for conditions that do not involve transport and diffusional processes, including plug flow and stirred reactors, batch reactors and shock tubes. The present kinetic model and its validation differ from previous comprehensive detailed reaction mechanisms in two important ways. First, in addition to conventional combustion data, experiments more commonly associated with chemical engineering problems such as oxidative coupling, oxidative pyrolysis and steam cracking are used to test the reaction mechanism, making it even more general than previous models. In addition, H-atom abstraction and some other reaction rates, even for the smaller C 2, C 3, and C a species, are treated using approximations that facilitate future extensions to larger fuels in a convenient manner. The construction of the reaction mechanism and selected comparisons with experimental data are described that illustrate the generality of the model.

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