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- W2045366865 abstract "A mixture of tar vapours and other gases was obtained by introducing size-separated bark particles into a reactor at 650°C. This mixture was then directed through a second reactor, the temperature of which could be changed. For each temperature, the flow-rate of the mixture was varied from low to high values up to the disappearance of tar at the outlet. Three types of reaction were carried out: (1) second reactor empty, (2) second reactor filled with sand and (3) second reactor filled with dolomite (decarbonated or carbonated). Assuming that tar pyrolysis is a first order reaction, in each instance a curve was constructed of the time necessary for complete pyrolysis of tar versus the reactor temperature. The activation energies were also determined (21.5 kcal mole−1 for the homogeneous reaction, 18.4 kcal mole−1 for the reaction catalysed with sand and 11 kcal mole−1 for the reaction catalysed with dolomite). From these curves, the catalytic efficiencies of sand and decarbonated and carbonated dolomite were evaluated. The gas composition was always measured, which enabled curves to be constructed of the gas calorific value versus the pyrolysis temperature, showing that the use of decarbonated dolomite can increase the calorific value of the gases to a significant extent." @default.
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- W2045366865 date "1985-04-01" @default.
- W2045366865 modified "2023-10-17" @default.
- W2045366865 title "Flash pyrolysis of tar from the pyrolysis of pine bark" @default.
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- W2045366865 doi "https://doi.org/10.1016/0165-2370(85)80039-5" @default.
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