Title:
Methane and Ethene: Possible Indicators of Tar Production in a Pyrolysis/Gasification Reactor?
Author(s):
Dufour, A., Girods, P., Rogaume, Y., Zoulalian, A., Masson, E.
Document(s):
Paper
Abstract:
Pyrolysis is the main fundamental mechanism that is the precursor of the gasification of solid fuels and of tar production. The evolutions of gas and tar compositions, produced from wood chips pyrolysis in a tubular reactor, were investigated as a function of the reactor temperature (700-1000°C). Tar (benzene, toluene, o-m-xylenes, phenol, indene, o-m-p-cresols, naphthalene, 1-2 methylnaphthalenes, acenaphthylene, phenanthrene) were quantified by GC-MS analysis and by using deuterated internal standards. A simplified chemical scheme of tar conversion is proposed. Under the investigated range of thermal severity, CH4 production is mainly controlled by aromatic tar demethylation. Linear relations between molar production of benzene and CH4 and between all quantified tar and C2H4 were found. CH4 and C2H4 could be thus analyzed by direct on-line methods and used as indicators of tar content and speciation for process monitoring. The suitability of these relations depends on reactors’ thermal severity and has to be checked on other gasification reactors.
Keywords:
analysis, gasification, pyrolysis, tar, balance
Topic:
Thermochemical conversion - Gasification for power and CHP and polygeneration
Subtopic:
Gasification for power and CHP and polygeneration
Event:
18th European Biomass Conference and Exhibition
Session:
VP2.1.49
Pages:
748 - 750
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-VP2.1.49
Price:
FREE
