ENGLISH

Combustion and Diffusion Flames at High Pressures to 2000 bar

By W. Schilling , E.U. Franck

Book information

Publisher
Wiley-VCH Verlag
Year
1988
DOI
10.1002/bbpc.198800149
ISSN
0005-9021
Language
english
Format
PDF
Filesize
1 MB (1459867 bytes)
Pages
631-636\6
Time added
2015-04-01 05:45:29

Description

The combustion of methane with oxygen in supercritical homogeneous aqueous fluids has been investigated and stationary diffusion flames generated to pressures of 2000 bar. A reaction autoclave with sapphire windows contains high pressure homogeneous mixtures of water and methane to 500°C. A typical mixture composition is 70 to 30 mole percent of H₂O and CH₄. A quasi-circular fluid flow permits the steady injection of oxygen through a 0.5 mm nozzle at rates of 1 — 10 mm³ s−1 at constant pressures. — Above 400°C spontaneous ignition of flames occurred. The flames were observed and recorded with microscope and video camera. Emission spectra in the UV-region were obtained and samples could be taken for analysis. Below about 400°C flame-less oxidation is detected. The stationary diffusion flames are cone-shaped and typically about 3 mm high. Flame examples for pressures between 300 and 2000 bar are shown. Preliminary temperatures derived from OH-spectra are close to 3200 K. — Water can be replaced by argon.  Read more...

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