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Ignition of DME and DME/CH<sub>4</sub> at High Pressure: Flow Reactor Experiments and Kinetic Modeling

Authors
  • Hashemi, Hamid
  • Christensen, Jakob Munkholt
  • Glarborg, Peter
Publication Date
Jan 01, 2015
Source
Online Research Database In Technology
License
Unknown
External links

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<br/>reaction was shifted to lower temperatures by 50―150 K (at 100 bar).

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