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CO 2 gasification of wood charcoals derived from vacuum and atmospheric pyrolysis
Author(s) -
Plante P.,
Roy C.,
Chornet E.
Publication year - 1988
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450660219
Subject(s) - char , pyrolysis , oxidizing agent , atmospheric pressure , reactivity (psychology) , biomass (ecology) , chemistry , chemical engineering , materials science , analytical chemistry (journal) , environmental chemistry , organic chemistry , meteorology , physics , geology , medicine , oceanography , pathology , engineering , alternative medicine
The gasification of biomass derived char obtained via vacuum and atmospheric pyrolysis of Populus tremuloides has been studied in the ranges of 725–960°C and 0.1 to 6 MPa. CO 2 was used as the oxidizing gas. The results show that char reactivity is influenced by the preheating rates and that pressure effects are significant between 850°C and 950°C. A correlation based on the expression: d f /d t = k 0 {exp(‐ E/RT )}(1 ‐ f ) a f β P y CO 2 was used to fit the experimental data. In general, vacuum pyrolysis derived char showed a higher reactivity than atmospheric pyrolysis chars. An explanation based on a higher oxygen content of the vacuum pyrolysis char is suggested.