Gasification of Model Compounds and Wood in Hot Compressed Water

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• 作者：Sascha R. A. Kersten ; Biljana Potic ; Wolter Prins ; and Wim P. M. Van Swaaij
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2006
• 出版时间：June 7, 2006
• 年：2006
• 卷：45
• 期：12
• 页码：4169 - 4177
• 全文大小：589K
• 年卷期：v.45,no.12(June 7, 2006)
• ISSN：1520-5045

文摘

In this paper, an experimental investigation is presented that concerns the gasification of glycerol, glucose,and pinewood in supercritical water. The batch experiments were performed in quartz capillary reactors withan internal diameter of only 1 mm. Because these quartz reactors are catalytically inert, the process could bestudied in the absence of the interfering catalytic influence of a metal reactor wall, as used in all previousstudies. The reaction space has been mapped by performing over 700 experiments in which the temperature,pressure, reaction time, and concentration of the feedstock were varied. The most important observationswere that the pressure turned out to have no effect on the conversion and product yields, and that,noncatalytically, complete conversion to the gas phase is only possible for very diluted feedstock solutions(<2 wt %). By adding ruthenium on a TiO₂ carrier (Ru/TiO₂) to the capillaries, the potential of heterogeneouscatalysis has been demonstrated. When adding this catalyst to the capillaries, glucose solutions in the rangeof 1-17 wt % could be gasified completely.