Oxidative Conversion of Wood Gasification Products in a Mixing Reactor

The results of thermodynamic calculations and experimental data on conversion of wood gasification tars in pyrolysis gas to tar-free fuel gas by partial oxidation with air are reported. The rate of oxygen feeding into the converter, expressed via oxygen excess J , was used as the main controlling pa...

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Bibliographic Details
Published in:Russian journal of applied chemistry 2021-03, Vol.94 (3), p.347-353
Main Authors: Kislov, V. M., Glazov, S. V., Salganskaya, M. V., Pilipenko, E. N., Tsvetkova, Yu. Yu
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Conversion
Converters
Feeding
Gasification
Heat loss
Heat of combustion
Industrial Chemistry/Chemical Engineering
Mathematical analysis
Nuclear fuels
Oxidation
Pyrolysis
Recycling of Renewable Raw Materials
Tars
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Summary:The results of thermodynamic calculations and experimental data on conversion of wood gasification tars in pyrolysis gas to tar-free fuel gas by partial oxidation with air are reported. The rate of oxygen feeding into the converter, expressed via oxygen excess J , was used as the main controlling parameter of the conversion. The calculation shows that, under the optimum conversion conditions ( J = 0.45), the tars are converted virtually completely to gaseous products that are not inferior to the starting substances in the heat of combustion and have approximately 3 times larger volume. In the experiments, because of the effect of lateral heat loss, at the air feeding rate corresponding to J = 0.45–0.50, the temperature is approximately 400°С lower; therefore, the tar conversion reached only 80%. The heat of combustion of the gaseous products after the conversion was 20–30% lower than that of the initial gaseous gasification products, and the volume of the gaseous conversion products increased by a factor of 2.5–3.
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427221030113