期刊
FUEL PROCESSING TECHNOLOGY
卷 193, 期 -, 页码 361-371出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fuproc.2019.05.021
关键词
Chemical looping gasification (CLG); Cellulose; Iron-based oxygen carrier; Products distribution; Kinetic analysis
资金
- National Natural Science Foundation of China [51606149]
- Fundamental Research Funds for the Central Universities [xjj2017021]
- Promotion Plan for Young People of Shaanxi Association for Science and Technology [20180402]
- Natural Science Basic Research Plan in Shaanxi Province of China [2018JQ2008]
- Technology Foundation for Selected Overseas Chinese Scholar in Shaanxi Province [2018015]
Product distribution and kinetics analysis of chemical looping gasification (CLG) of cellulose with Fe203 were investigated. Based on the thermodynamic simulation, the optimum vaporization temperature of the product H2 was 850 C. The influence of reaction temperatures and oxygen carrier mixing ratios on product distribution were explored via tube furnace reactor combined with on-line mass spectrometry. When the Fe203 mixing ratio was 10%, the gas phase product content was the highest, which may be caused by the incomplete oxidation transition to complete oxidation. Kinetic parameters such as the activation energy of the gas phase product were obtained by an isoconversion method. The CLG process could reduce the activation energy of gaseous products of CO2, CH4, and H2, and the activation energy of CO2 (79.21 kJ/mol) was the highest. Characterization of solid phase products analyzes using SEM. The solid phase product content decreases slightly with increasing temperature because of the higher carbon conversion at elevated temperatures. As the Fe203 blending ratio increased, the surface morphology of CE changed from bulk to relatively loose structure, and the particles also aggregate, which may be beneficial to the reaction. This paper provides a reference for clarifying the thermodynamics and kinetics of chemical looping gasification of biomass organic components.
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