期刊
BIORESOURCE TECHNOLOGY
卷 233, 期 -, 页码 15-20出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.02.070
关键词
Cotton stalk; Fast pyrolysis; CaO
资金
- Fundamental Research Funds for the Central Universities
- National Basic Research Program of China (973 Program) [2013CB228102]
- National Nature Science Foundation of China [51622604, 51406061]
- Special Fund for Agro-scientific Research in the Public Interest [201303095]
We herein investigate the various roles of calcium oxide in the pyrolysis of biomass at a variant temperatures. The evolution of pyrolysis products was examined to propose the various roles of Ca at a range of temperatures and CaO addition ratios with cotton stalk on a fixed-bed reactor. We found that upon the addition of CaO, the content of ketones produced increased, while that of acidic compounds decreased. Under similar conditions, the concentration of evolved H-2 and CH4 increased, while that of CO2 decreased. Thus, variation in the CaO/biomass (Ca/B) mass ratios and pyrolysis temperatures indicated that CaO could act as a reactant, an absorbent, and a catalyst at Ca/B ratios of <0.2, >0.2, and >0.4, respectively. Moreover, at temperatures >600 C-omicron, the roles of CaO as an absorbent and a reactant were less apparent, while its role as a catalyst was enhanced. (C) 2017 Elsevier Ltd. All rights reserved.
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