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Progress in Plasma Processing of Materials, 1997

ISBN:
1-56700-093-2 (Print)

HEAT AND MASS BALANCE ON A PILOT PLASMA REACTOR FOR CARBON COMPOUND SYNTHESIS FROM HYDROCARBONS

Frederic Fabry
C. N. R. S., Institut de Science et de Genie des Materiaux et Procedes B. P. 5, Odeillo, F-66125 Font-Romeu Cedex

L. Fulcheri
Centre D'Energetique, Ecole Des Mines De Paris; Rue Claude Daunesse, B. P. 207, F-06904 Sophia Antipolis Cedex

Gilles Flamant
Laboratoire des Procedes, Materiaux et Energie Solaire, PROMES-CNRS UPR 8521, 7 rue du Four solaire, 66120 Font Romeu-Odeillo, France

J. M. Badie
C. N. R. S., Institut de Science et de Genie des Materiaux et Procedes B. P. 5, Odeillo, F-66125 Font-Romeu Cedex

Benjamin Ravary
Centre D'Energetique, Ecole Des Mines De Paris; Rue Claude Daunesse, B. P. 207, F-06904 Sophia Antipolis Cedex

J. Y. Peroy
C. N. R. S., Institut de Science et de Génie des Matériaux et Procédés B. P. 5, ODEILLO, F-66125 FONT-ROMEU CEDEX

F. Fischer
TIMCAL, CH-5643 SINS

J. Saint-Just
GDF DR-CERSTA, B.P. 33, F-93211 LA PLAINE SAINT DENIS

F. Kassabji
EDF-DER - 77250 Moret-sur-Loing - France

Abstract

In the frame of a cooperative research programme, a 100 kW plasma pilot reactor was erected at IMP-CNRS and is now in operation. The objective of this Rand D project is to produce, under high temperature, carbon nanostructures by thermal decomposition of gaseous hydrocarbons in a plasma arc. Probes and controllers have been set up in order to establish heat and mass balances into the reactor and to link the product quality with the experimental conditions. The main equipment is the following :
Heat balance : rms. current on each phase, rms. voltage between phases, water-cooled walls equipped with flow meters and thermocouples which permit a subsystems analysis, gas temperature and flow rate measurements. Mass balance : flow meter for gas inlet, weight of carbon particles collected in the filter, gas phase analysis using a gas chromatography (G.C.).
Analysis of the plasma : chemical species resulting from hydrocarbon cracking in the plasma are analyzed by emission spectroscopy (E.S.).