On the explosion limits of H2/CO/O2 mixtures

Jie Liu; Wenkai Liang; Chung K. Law

On the explosion limits of H₂/CO/O₂ mixtures

Jie Liu, Wenkai Liang, Chung K. Law

Research output: Contribution to conference › Paper › peer-review

Abstract

The explosion limits of syngas for various H₂/CO/O₂ mixtures were analyzed computationally and theoretically. It is shown that, with the addition of even a minute quantity of H₂, the explosion limits of CO are changed from being monotonic in the pressure-temperature domain to a highly-nonmonotonic, Z-shape curve. With further increase of the H₂ concentration, the explosion limits of the syngas approach those of pure H₂. A sensitivity analysis of the important chemical reactions which influence the syngas explosion limits was performed for various temperature, pressure and mixture concentrations, and it is shown that the explosion limit can be reproduced well with a reduced mechanism of 13 elementary steps and 13 species. An eigenvalue analysis of the reduced mechanism leads to an analytic solution for the explosion limits including the critical condition for the transition from the monotonic to the Z-curve behavior.

Original language	English (US)
State	Published - 2016
Event	2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016 - Princeton, United States Duration: Mar 13 2016 → Mar 16 2016

Other

Other	2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016
Country/Territory	United States
City	Princeton
Period	3/13/16 → 3/16/16

All Science Journal Classification (ASJC) codes

Mechanical Engineering
Physical and Theoretical Chemistry
General Chemical Engineering

Cite this

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title = "On the explosion limits of H2/CO/O2 mixtures",

abstract = "The explosion limits of syngas for various H2/CO/O2 mixtures were analyzed computationally and theoretically. It is shown that, with the addition of even a minute quantity of H2, the explosion limits of CO are changed from being monotonic in the pressure-temperature domain to a highly-nonmonotonic, Z-shape curve. With further increase of the H2 concentration, the explosion limits of the syngas approach those of pure H2. A sensitivity analysis of the important chemical reactions which influence the syngas explosion limits was performed for various temperature, pressure and mixture concentrations, and it is shown that the explosion limit can be reproduced well with a reduced mechanism of 13 elementary steps and 13 species. An eigenvalue analysis of the reduced mechanism leads to an analytic solution for the explosion limits including the critical condition for the transition from the monotonic to the Z-curve behavior.",

author = "Jie Liu and Wenkai Liang and Law, {Chung K.}",

note = "Publisher Copyright: {\textcopyright} 2016, Eastern States Section of the Combustion Institute. All rights reserved.; 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016 ; Conference date: 13-03-2016 Through 16-03-2016",

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TY - CONF

T1 - On the explosion limits of H2/CO/O2 mixtures

AU - Liu, Jie

AU - Liang, Wenkai

AU - Law, Chung K.

PY - 2016

Y1 - 2016

N2 - The explosion limits of syngas for various H2/CO/O2 mixtures were analyzed computationally and theoretically. It is shown that, with the addition of even a minute quantity of H2, the explosion limits of CO are changed from being monotonic in the pressure-temperature domain to a highly-nonmonotonic, Z-shape curve. With further increase of the H2 concentration, the explosion limits of the syngas approach those of pure H2. A sensitivity analysis of the important chemical reactions which influence the syngas explosion limits was performed for various temperature, pressure and mixture concentrations, and it is shown that the explosion limit can be reproduced well with a reduced mechanism of 13 elementary steps and 13 species. An eigenvalue analysis of the reduced mechanism leads to an analytic solution for the explosion limits including the critical condition for the transition from the monotonic to the Z-curve behavior.

AB - The explosion limits of syngas for various H2/CO/O2 mixtures were analyzed computationally and theoretically. It is shown that, with the addition of even a minute quantity of H2, the explosion limits of CO are changed from being monotonic in the pressure-temperature domain to a highly-nonmonotonic, Z-shape curve. With further increase of the H2 concentration, the explosion limits of the syngas approach those of pure H2. A sensitivity analysis of the important chemical reactions which influence the syngas explosion limits was performed for various temperature, pressure and mixture concentrations, and it is shown that the explosion limit can be reproduced well with a reduced mechanism of 13 elementary steps and 13 species. An eigenvalue analysis of the reduced mechanism leads to an analytic solution for the explosion limits including the critical condition for the transition from the monotonic to the Z-curve behavior.

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M3 - Paper

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T2 - 2016 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2016

Y2 - 13 March 2016 through 16 March 2016

ER -

On the explosion limits of H₂/CO/O₂ mixtures

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