Supercritical Water Gasification of Biomass: A Literature and Technology Overview
Supercritical Water Gasification of Biomass: A Literature and Technology Overview
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DOI：
10.3390/en8020859
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发表时间：
2015-01
期刊：
影响因子：
3.2
通讯作者：
O. Yakaboylu;J. Harinck;K. Smit;W. Jong
中科院分区：
文献类型：
--
作者：
O. Yakaboylu;J. Harinck;K. Smit;W. Jong
超临界水气化过程是传统气化和厌氧消化的替代方案，因为它不需要干燥，并且该过程在更短的停留时间内发生;最多几分钟。水从液态到超临界状态的热物理性质的急剧变化使其成为将湿生物质有效转化为产品气体的有前途的技术，该产品气体在升级后可用作替代天然气。最早的研究可以追溯到20世纪70年代，从那时起，超临界水一直是湿生物质热化学转化领域许多研究工作的主题。本文从水的热物理性质和反应的化学性质出发，综述了超临界水气化技术的发展现状，并指出了这种基于生物质的超临界水气化工艺装置的工艺挑战。
The supercritical water gasification process is an alternative to both conventional gasification as well as anaerobic digestion as it does not require drying and the process takes place at much shorter residence times; a few minutes at most. The drastic changes in the thermo-physical properties of water from the liquid state to the supercritical state make it a promising technology for the efficient conversion of wet biomass into a product gas that after upgrading can be used as substitute natural gas. The earliest research goes back as far as the 1970s and since then, supercritical water has been the subject of many research works in the field of thermochemical conversion of wet biomass. This article reviews the state of the art of the supercritical water gasification technology starting from the thermophysical properties of water and the chemistry of reactions to the process challenges of such a biomass based supercritical water gasification process plant.