MARGINAL DETONATION OF ALIPHATIC NATURAL-GAS CONSTITUENTS WITH O-2/N-2


RASHIDI F., MICHELS H.

COMBUSTION AND FLAME, vol.91, pp.373-381, 1992 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 91
  • Publication Date: 1992
  • Doi Number: 10.1016/0010-2180(92)90064-v
  • Journal Name: COMBUSTION AND FLAME
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.373-381
  • Middle East Technical University Affiliated: No

Abstract

Detonation propagation and detonation limits in gaseous ternary systems of methane, ethane, n-propane, and n-butane with oxygen and nitrogen have been studied in a 50-mm bore tube, at 1 bar.a and room temperature, after initiation by a denotating mixture of stoichiometric hydrogen and oxygen. Fuel-lean limit concentrations in each system are largely independent of increased diluent concentration up to mixtures with air, but fuel-rich limit concentrations vary and in the case of n-propane and n-butane appear dependent on energy release from condensation processes. For both dilutions, however, the results support once again the opinion that shock temperatures of at least 1200 K are a prerequisite for stable, viable detonation of aliphatic natural gas constituents confined in tubes with nitrogen and/or oxygen. On a relative scale, for mixtures with air, methane appeared least and ethane most detonable.