期刊
CHEMICAL ENGINEERING & TECHNOLOGY
卷 31, 期 11, 页码 1561-1568出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.200800278
关键词
Hydrothermal biomass gasification; Microautoclave; Supercritical water coke formation
资金
- DAAD (German Academic Exchange Service)
The hydrothermal biomass gasification is a promising technology, to produce hydrogen and/or methane from wet biomass with a water Content of >= 80% (g/g). In the process, the coke formation usually is very low, but already low amounts problems like, e.g., fouling in the heat exchanger. To learn more about the product formation, the results of the hydrothermal treatment (at 400, 500, 600 degrees C and 1 h) of different biomass feedstocks (artichoke stalk, pinecone, sawdust, and cellulose as model biomass) in a microreactor are compared. The gas composition and the total organic carbon content of the aqueous phase were determined after reaction. The gas formation rises with increasing temperature. The formation of carbon deposits and their characterization has been investigated by scanning electron microscopy (SEM). The variation of the solid morphology during the hydrothermal conversion is discussed based on chemical pathways occurring during hydrothermal biomass degradation.
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