Issue
J. Phys. Colloques
Volume 51, Number C5, Septembre 1990
European Congress on Thermal Plasma Processes and Materials Behaviour at High Temperature
Page(s) C5-43 - C5-48
DOI https://doi.org/10.1051/jphyscol:1990506
European Congress on Thermal Plasma Processes and Materials Behaviour at High Temperature

J. Phys. Colloques 51 (1990) C5-43-C5-48

DOI: 10.1051/jphyscol:1990506

PLASMA PYROLYSIS OF BROWN COAL

W.W. PLOTCZYK, A. RESZTAK et A. SZYMANSKI

Laboratory of Plasma Chemistry, Department of Chemistry, University of Warsaw, 02-093 Warsaw, Pasteur 1, Poland


Abstract
The specific energy of the substrate is defined as the ratio of the plasma jet energy to the mass of the coal. The influence of the specific energy of the brown coal (10 - 35 MJ/kg) on the yield and selectivity of the gaseous products formation was determined. The pyrolysis was performed in d.c. arc hydrogen plasma jet with the 25 kW power delivered to it. The higher specific energies of coal correlated to the higher conversion degrees of the substrates to C2H2 and CO as well as to the higher selectivity of CO formation. It has been found the overall conversion degree of the coal to the sum of gaseous products was up to 62 wt. %.