Detonation of a coal-air mixture with addition of hydrogen in plane-radial vortex chambers |
| |
Authors: | F A Bykovskii S A Zhdan E F Vedernikov Yu A Zholobov |
| |
Affiliation: | 1.Lavrent’ev Institute of Hydrodynamics, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia;2.Novosibirsk State University,Novosibirsk,Russia |
| |
Abstract: | Results of an experimental study of continuous and pulsed detonation of a coal-air mixture with addition of hydrogen in plane-radial
vortex chambers 204 and 500 mm in diameter are presented. The tested substance is pulverized activated charcoal. A method
of coal powder supply through narrow channels by means of adding the gas at the injector entrance is found. Stable regimes
of continuous spin detonation with one or two transverse detonation waves moving with velocities of 1.8–1.6 km/sec are obtained
for the first time in the combustor 204 mm in diameter. The frequency of pulsed detonation with radial waves is 4–4.8 kHz.
The limits of continuous detonation in the combustor 500 mm in diameter are extended: regimes of continuous spin detonation
with a large number (5–8) of transverse waves moving with velocities of 1.8–1.5 km/sec are obtained, the amount of hydrogen
added to coal is reduced to 2.8%, and combustion of coarser fuel particles is ensured owing to an increased residence time
of the mixture in the combustor. The wave structure and the flow in the vicinity of the waves are reconstructed in the combustor
plane. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|