期刊
RENEWABLE ENERGY
卷 93, 期 -, 页码 460-468出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2016.03.006
关键词
Torrefaction; Biomass; Syngas; Contaminants; Tar
资金
- United States Department of Agriculture-National Institute of Food and Agriculture (USDA-NIFA) through the Integrated Biomass Supply Systems (IBSS) project [2011-68005-30410]
Torrefied biomass has higher C/O ratio, resulting in improved heating value and reduced hygroscopic nature of the biomass, thus enabling longer storage times. In the southeastern United States, pine is has been identified as a potential feedstock for energy production. The objective of this study was to understand the performance of torrefied pine as a gasification fuel in a bench-scale bubbling fluidized bed gasifier. The gasification of torrefied pine was carried out at 790, 935 and 1000 degrees C and three equivalence ratios (ERs: 0.20, 0.25 and 030). The effect of process variables were studied based on i) products yield, ii) syngas composition iii) syngas energy content, and iv) contaminants. The mean concentration of CO increased with an increase in temperature, but was not statistically significant. On the other hand, H-2 concentration increased whereas CH4 concentration decreased significantly with an increase in temperature from 790 to 935 degrees C. Further, with an increase in ER from 0.20 to 0.30, only CO2 concentrations increased in the syngas. Results from torrefied pine were compared with raw pine gasification, and it was observed that torrefied pine gasification led to much higher char yield (more than twice) than pine; however, it produced less than half as much tar. (C) 2016 Elsevier Ltd. All rights reserved.
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