Upgrading Biomass Pyrolysis Gas By Conversion Of Methane At High Temperature: Experiments And Modelling

Sylvie Valin; Julien Cances; Pierre Castelli; Sebastien Thiery; Anthony Dufour; Guillaume Boissonnet; Bertrand Spindler

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Upgrading Biomass Pyrolysis Gas By Conversion Of Methane At High Temperature: Experiments And Modelling

机译：通过高温甲烷转化提高生物质热解气的实验和建模

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Biomass gasification at temperatures below 1273 K produces gas which contains methane and too much tar for Fischer-Tropsch synthesis. The aim of this study is to investigate methane conversion at high temperature. Experimental tests were performed between 1273 and 1773 K, with a mixture of gas representative of wood pyrolysis at 1100 K (main components only: CO, CO_2, CH_4, H_2, H_2O). Two different kinetic schemes were used to predict the gas composition, and PAH molecules formation. For a residence time of 2 s in the reactor, the gas must be heated to at least 1650 K to reach a methane conversion rate of 90%. A parametric study was performed at 1453 K, by varying the initial methane, steam and hydrogen contents, so as to find out which components are the most influent on methane conversion and soot production.

机译：在低于1273 K的温度下，生物质气化会产生包含甲烷和太多焦油的气体，从而无法进行费托合成。这项研究的目的是研究高温下的甲烷转化率。在1273至1773 K之间进行了实验测试，混合气体代表木材在1100 K时发生热解（仅主要成分：CO，CO_2，CH_4，H_2，H_2O）。使用两种不同的动力学方案来预测气体组成和PAH分子的形成。对于反应器中2 s的停留时间，必须将气体加热到至少1650 K，以达到90％的甲烷转化率。通过改变初始甲烷，蒸汽和氢气的含量，在1453 K上进行了参数研究，以找出哪些成分对甲烷转化和烟灰生产影响最大。

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《Fuel》 |2009年第5期|p.834-842|共9页
作者
Sylvie Valin; Julien Cances; Pierre Castelli; Sebastien Thiery; Anthony Dufour; Guillaume Boissonnet; Bertrand Spindler;
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作者单位

CEA, DEN, 17 Rue des Martyrs, F-38054 Grenoble, France;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类燃料化学工业（总论）;热力工程、热机;
关键词
biomass; methane; gasification; soot;

机译：生物质;甲烷;气化;烟灰;

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机译：BBIOMASS转化和生物遗料的特殊主题问题“催化生物量快速热解和生物油升级的歉意”
2. Investigation of biomass conversion on a moving grate by pyrolysis gas analysis and fuel bed modelling [J] . Barroso Gabriel, Roth Simon, Nussbaumer Thomas Energy . 2019,第MAYa1期

机译：通过热解气体分析和燃料床建模研究移动炉排上的生物质转化
3. Investigation of biomass conversion on a moving grate by pyrolysis gas analysis and fuel bed modelling [J] . Barroso Gabriel, Roth Simon, Nussbaumer Thomas Energy . 2019,第May1期

机译：通过热解气分析和燃料床建模对运动炉炉的生物质转化研究
4. METHANE RICH GAS PRODUCTION FROM BIOMASS PYROLYSIS FOR SMALL SCALE CHP APPLICATION AND CHAR AS CO-PRODUCTS [C] . R. S. Kempegowda, P.V. Pannir Selvam, ?yvind Skreiberg, European biomass conference and exhibition . 2011

机译：小规模热电联产生物质热解甲烷生产富甲烷和副产物焦炭
5. Upgrading of Bio-oil by Incorporating Methane in Fast Pyrolysis of Municipal Solid Waste (MSW) and Biomass [D] . Tshikesho, Redemptus Shiloondyodhi 2017

机译：通过在城市固体废物（MSW）和生物质的快速热解中掺入甲烷的甲烷升级生物油
6. Mechanistic formation of hazardous molecular heterocyclic amines from high temperature pyrolysis of model biomass materials: cellulose and tyrosine [O] . Samuel K. Kirkok, Joshua K. Kibet, Francis Okanga, 2019

机译：由模型生物质材料：纤维素和酪氨酸的高温热解形成有害分子杂环胺的机理
7. This article presents a new numerical model describing the behaviour of a thermally thick wood sample exposed to high solar heat flux (above 1 MW/m2). A preliminary study based on dimensionless numbers is used to classify the problem and support model building assumptions. Then, a model based on mass, momentum and energy balance equations is proposed. These equations are coupled with liquid-vapour drying model and pseudo species biomass degradation model. By comparing to a former experimental study, preliminary results have shown that these equations are not enough to accurately predict biomass behaviour under high solar heat flux. Indeed, a char layer acting as radiative shield forms on the sample exposed surface. In addition to this classical set of equations, it is mandatory to take into account radiation penetration into the medium. Furthermore, as biomass contains water, medium deformation consecutively to char steam gasification must also be implemented. Finally, with the addition of these two strategies, the model is able to properly capture the degradation of biomass when exposed to high radiative heat flux over a range of sample initial moisture content. Additional insights of biomass behaviour under high solar heat flux were also derived. Drying, pyrolysis and gasification fronts are present at the same time inside of the sample. The coexistence of these three thermochemical fronts leads to char gasification by the steam produced from drying of the sample, which it is the main phenomenon behind medium ablation. [O] . Pozzobon, Victor, Salvador, Sylvain, Bézian, Jean Jacques 2018

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8. Process Design and Economics for the Conversion of Lignocellulosic Biomass to Hydrocarbon Fuels. Thermochemical Research Pathways with In situ and Ex Situ Upgrading of Fast Pyrolysis Vapors. [R] . Dutta, A., Sahir, A., Tan, E., 2015

机译：木质纤维素生物质转化为烃类燃料的工艺设计与经济学。快速热解蒸气原位和异位升级的热化学研究途径。

Upgrading Biomass Pyrolysis Gas By Conversion Of Methane At High Temperature: Experiments And Modelling

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