Journal
RENEWABLE ENERGY
Volume 147, Issue -, Pages 1584-1594Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2019.09.058
Keywords
Co-gasification; Ash fusion characteristic; Mineral matter; Synergy effect
Funding
- National Natural Science Foundation of China [21506060]
- Fundamental Research Funds for the Central Universities [222201718003]
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The ash fusion characteristics and co-gasification activities of different biomasses (corn straw (CS), rice straw (RS) and rice husk (RH)) are investigated in an ash fusion temperature (AFTs) analyzer and a thermo-gravimetric analyzer (TGA). Moreover, the transformation behaviors of mineral matters during CS/RH and RS/RH co-gasification processes are calculated by FactSage software. Results show that the ash fusion characteristic temperatures (AFTs) of CS/RH and RS/RH mixtures both increase with increasing RH ratio, and the maximum ratio of 75% CS and 55% RS in CS/RH and RS/RH mixtures can avoid the melting and slagging problems during co-gasification processes. Under the desirable RH ratio, the gasification activities of CS/RH and RS/RH mixtures increase with increasing CS or RS ratio. Besides, the increased AFTs of CS/RH and RS/RH mixtures are mainly ascribed to the increased contents of high-melting point quartz [SiO2] and tridymite [SiO2] and the decreased content of low-melting point silicate with the increase of RH ratio. (c) 2019 Elsevier Ltd. All rights reserved.
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