Influence of coated olivine on the conversion of intermediate products from decomposition of biomass tars during gasification

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• 作者：Matthias Kuba ; Friedrich Kirnbauer ; Hermann Hofbauer
• 关键词：Biomass gasification ; Bed material coating ; Catalytic conversion ; Steam reforming ; 1H ; indene ; Methane
• 刊名：Biomass Conversion and Biorefinery
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：7
• 期：1
• 页码：11-21
• 全文大小：1816KB
• 刊物类别：Engineering
• 刊物主题：Renewable and Green Energy; Renewable and Green Energy; Biotechnology;
• 出版者：Springer Berlin Heidelberg
• ISSN：2190-6823
• 卷排序：7

文摘

Steam gasification of solid biomass in dual fluidized bed systems is a suitable technology for the production of chemicals, fuels for transportation, electricity, and district heating. Interaction between biomass ash and bed material leads to the development of Ca-rich bed particle layers. Furthermore, incomplete decomposition of biomass leads to the formation of tar components; among these are stable intermediate products such as 1H-indene and stable gaseous hydrocarbons such as methane. In this work, the influence of bed particle layers on the conversion of intermediate products such as 1H-indene and methane via steam reforming was investigated by conducting experiments in a lab-scale test rig. Satisfying conversion of 1H-indene into gaseous molecules (e.g., CO, CO₂, H₂) was achieved with used, layered olivine, whereas fresh olivine showed significantly poorer performance. Since steam reforming was connected to the water-gas-shift reaction for the tested hydrocarbons, investigations regarding carbon monoxide conversion in the presence of steam were conducted as well. Furthermore, a comparison of the influence of fresh and used bed material concerning the conversion of methane is presented, showing that methane is not affected by the bed material, independent of the presence of particle layers.