Ignition of DME and DME/CH4 at High Pressure: Flow Reactor Experiments and Kinetic Modeling

Hamid Hashemi; Jakob Munkholt Christensen; Peter Glarborg

Ignition of DME and DME/CH₄ at High Pressure: Flow Reactor Experiments and Kinetic Modeling

Hamid Hashemi, Jakob Munkholt Christensen, Peter Glarborg

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Abstract

The pyrolysis and oxidation of dimethyl ether (DME) and its mixtures with methane were investigated at high pressures (50 and 100 bar) and intermediate temperatures (450―900 K) in a laminar flow reactor. DME pyrolysis started at 825 K (at 50 bar). The onset of DME reaction was detected at 525―550 K (at 50 bar), independent of stoichiometry. The negative temperature coefficient (NTC) zone in the DME profile always included temperatures of 575―625 K. A profound promoting effect of DME addition on the ignition of methane was observed as the onse tof
reaction was shifted to lower temperatures by 50―150 K (at 100 bar).

Original language	English
Publication date	2015
Number of pages	1
Publication status	Published - 2015
Event	7th European Combustion Meeting - Hotel Hilton, Budapest, Hungary Duration: 30 Mar 2015 → 2 Apr 2015 http://www.ecm2015.hu/index.php/invitation/

Conference

Conference	7th European Combustion Meeting
Location	Hotel Hilton
Country/Territory	Hungary
City	Budapest
Period	30/03/2015 → 02/04/2015
Internet address	http://www.ecm2015.hu/index.php/invitation/

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title = "Ignition of DME and DME/CH4 at High Pressure: Flow Reactor Experiments and Kinetic Modeling",

abstract = "The pyrolysis and oxidation of dimethyl ether (DME) and its mixtures with methane were investigated at high pressures (50 and 100 bar) and intermediate temperatures (450―900 K) in a laminar flow reactor. DME pyrolysis started at 825 K (at 50 bar). The onset of DME reaction was detected at 525―550 K (at 50 bar), independent of stoichiometry. The negative temperature coefficient (NTC) zone in the DME profile always included temperatures of 575―625 K. A profound promoting effect of DME addition on the ignition of methane was observed as the onse tofreaction was shifted to lower temperatures by 50―150 K (at 100 bar).",

author = "Hamid Hashemi and Christensen, {Jakob Munkholt} and Peter Glarborg",

year = "2015",

language = "English",

note = "7th European Combustion Meeting, ECM 2015 ; Conference date: 30-03-2015 Through 02-04-2015",

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TY - CONF

T1 - Ignition of DME and DME/CH4 at High Pressure: Flow Reactor Experiments and Kinetic Modeling

AU - Hashemi, Hamid

AU - Christensen, Jakob Munkholt

AU - Glarborg, Peter

PY - 2015

Y1 - 2015

N2 - The pyrolysis and oxidation of dimethyl ether (DME) and its mixtures with methane were investigated at high pressures (50 and 100 bar) and intermediate temperatures (450―900 K) in a laminar flow reactor. DME pyrolysis started at 825 K (at 50 bar). The onset of DME reaction was detected at 525―550 K (at 50 bar), independent of stoichiometry. The negative temperature coefficient (NTC) zone in the DME profile always included temperatures of 575―625 K. A profound promoting effect of DME addition on the ignition of methane was observed as the onse tofreaction was shifted to lower temperatures by 50―150 K (at 100 bar).

AB - The pyrolysis and oxidation of dimethyl ether (DME) and its mixtures with methane were investigated at high pressures (50 and 100 bar) and intermediate temperatures (450―900 K) in a laminar flow reactor. DME pyrolysis started at 825 K (at 50 bar). The onset of DME reaction was detected at 525―550 K (at 50 bar), independent of stoichiometry. The negative temperature coefficient (NTC) zone in the DME profile always included temperatures of 575―625 K. A profound promoting effect of DME addition on the ignition of methane was observed as the onse tofreaction was shifted to lower temperatures by 50―150 K (at 100 bar).

M3 - Poster

T2 - 7th European Combustion Meeting

Y2 - 30 March 2015 through 2 April 2015

ER -