Inverse analysis of wood pyrolysis with long residence times in the temperature range 210-290 C: Selection of multi-step kinetic models based on mass loss residues

Cavagnol S.; Sanz E.; Nastoll W.; Roesler J.F.; Zymla V.; Perré P.

首页> 外文期刊>Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems >Inverse analysis of wood pyrolysis with long residence times in the temperature range 210-290 C: Selection of multi-step kinetic models based on mass loss residues

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Inverse analysis of wood pyrolysis with long residence times in the temperature range 210-290 C: Selection of multi-step kinetic models based on mass loss residues

机译：在210-290 C的温度范围内长时间停留的木材热解的逆分析：基于质量损失残留物的多步动力学模型的选择

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The aim of this paper is to evaluate different types of kinetic models and to propose a set of kinetic parameters for simulating the heat treatment of woody biomass under temperatures representative of torrefaction conditions. The mass loss of three wood types, locust, spruce and eucalyptus, as well as their main components, cellulose, xylan, glucomannan and lignin, has been determined in a TGA at different isothermal temperatures between 210 and 290 C for residence times of up to ten hours. These data were used to evaluate the kinetic parameters corresponding to various multi-step series reaction mechanisms proposed in the literature. A computational solution of the multi-step formulation was derived, which allows the exact conditions undergone by the sample to be used as input parameters. The inverse procedure takes into account simultaneously the different temperature levels for each species. A comprehensive table summarizes all results, among which the dimensionless residues, proposed as a guideline to choose the relevant mechanism complexity. Overall we find that 2-step series reaction models provide acceptable accuracy for reproducing the mass loss from lignocellulosic biomass and their constituents under torrefaction conditions.

机译：本文的目的是评估不同类型的动力学模型，并提出一组动力学参数，以模拟代表干燥条件的温度下木质生物质的热处理。在TGA中，在210至290 C的不同等温温度下，对于停留时间最长达20到200℃，已确定了三种木材类型（刺槐，云杉和桉树以及它们的主要成分纤维素，木聚糖，葡甘露聚糖和木质素）的质量损失。十个小时。这些数据用于评估与文献中提出的各种多步系列反应机理相对应的动力学参数。得出了多步骤配方的计算解决方案，该解决方案允许将样品所经历的确切条件用作输入参数。逆过程同时考虑到每种物质的不同温度水平。全面的表格总结了所有结果，其中包括无量纲残基，作为选择相关机理复杂性的指南。总的来说，我们发现两步串联反应模型为在烘焙条件下从木质纤维素生物质及其成分中产生质量损失提供了可接受的准确性。

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《Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems》 |2013年第null期|共9页
作者
Cavagnol S.; Sanz E.; Nastoll W.; Roesler J.F.; Zymla V.; Perré P.;
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正文语种 eng
中图分类其他物理及物理化学分析法;热化学;
关键词
Biomass; Inverse method; Kinetic simulation; Pyrolysis; Torrefaction;

机译：生物质;逆方法;动力学模拟;热解;焙烧;

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1. Inverse analysis of wood pyrolysis with long residence times in the temperature range 210-290 C: Selection of multi-step kinetic models based on mass loss residues [J] . Cavagnol S., Sanz E., Nastoll W., Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems . 2013,第Null期

机译：在210-290 C的温度范围内长时间停留的木材热解的逆分析：基于质量损失残留物的多步动力学模型的选择
2. Comparisons of Biochar Properties from Wood Material and Crop Residues at Different Temperatures and Residence Times [J] . Yu Wang, Yuting Hu, Xu Zhao, Energy & fuels . 2013,第sepaaocta期

机译：木材材料和农作物残渣在不同温度和停留时间下的生物炭特性比较
3. Mass loss kinetics of thermally modified wood species as a time-temperature function [J] . Cermak Petr, Hess Dominik, Suchomelova Pavlina European journal of wood and wood products . 2021,第3期

机译：热改性木材物种的质量损失动力学作为时间温度功能
4. Modelling of biomass residence time distribution and xylan depolimerization kinetics analysis in a Pilot-Scale Pretreatment Continuous Tubular Reactor [C] . Felicia Rodriguez, Arturo Sanchez European Symposium on Computer Aided Process Engineering . 2018

机译：生物质停留时间分布和Xylan Depolimerization动力学分析在试验尺度预处理连续管式反应器中的建模
5. Quantitative analysis in energy loss and vertical mass transport of various channel restoration structures using physical based modeling. [D] . Snyder, Katie May. 2016

机译：使用基于物理的建模对各种通道恢复结构的能量损失和垂直质量传输进行定量分析。
6. Qualification and application of liquid chromatography-quadrupole time-of-flight mass spectrometric method for the determination of carisbamate in rat plasma and prediction of its human pharmacokinetics using physiologically based pharmacokinetic modeling [O] . Byeong ill Lee, Jeong-hyeon Lim, Min-Ho Park, 2020

机译：液相色谱 - 四极孔飞行时间质谱法测定大鼠血浆中甲氨酸酯的鉴定及施用及其使用生理基于药代动力学建模的人体药代动力学预测
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

机译：本文提供了一个新的数值模型，该模型描述了暴露于高太阳热通量（高于1 / MW / m2）的热厚木材样品的行为。基于无量纲数的初步研究用于对问题进行分类并支持模型构建假设。然后，提出了一种基于质量，动量和能量平衡方程的模型。这些方程式与液体蒸汽干燥模型和假物种生物质降解模型耦合。通过与以前的实验研究进行比较，初步结果表明，这些方程不足以准确预测高太阳热通量下的生物量行为。的确，在样品暴露的表面上形成了充当辐射屏蔽层的炭层。除了这套经典的方程式之外，还必须考虑到辐射向介质的渗透。此外，由于生物质中含有水，因此还必须在炭蒸气汽化后进行连续的介质变形。最后，通过添加这两种策略，该模型能够在一定范围的样品初始水分含量下暴露于高辐射热通量的情况下，正确捕获生物质的降解。还得出了在高太阳热通量下生物量行为的其他见解。样品内部同时存在干燥，热解和气化前沿。这三个热化学前沿的共存会导致样品干燥产生的蒸汽产生焦炭气化，这是介质烧蚀的主要现象。

Inverse analysis of wood pyrolysis with long residence times in the temperature range 210-290 C: Selection of multi-step kinetic models based on mass loss residues

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