评估智利橡木热解过程中碳化的贡献：动力学/热力学研究和演化气体成分分析

IF 6.2 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2025-06-10 DOI:10.1016/j.indcrop.2025.121296

Kevin Jhon Fernández-Andrade , Javiera Valentina Ocampo-Bustamante , María Graciela Aguayo , Laura Azocar , Joan Manuel Rodríguez-Díaz , Serguei Alejandro-Martín

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引用次数: 0

摘要

生物质热解通过将废物转化为有价值的液体而使其增值。酸和氧化合物浓度升高会降低热解液的质量。本研究评估了生物质热解对降低热解酸含量和增加增值化合物的影响。智利橡木接受了四种不同最终温度和等温持续时间的烘烤处理。使用热重分析仪和分析热解器对生物质样品进行热解，以评估动力学行为并识别分解产物。Torr3（573 K, 30 min）的烘焙严重程度指数（TSI）最高。结果表明，TSI升高与半纤维素含量降低3.29 %、总木质素增加近90 %、纤维素水平稳定相关。生物量分解活化能随TSI升高而升高。结果表明，焙烧促进了木质素-碳水化合物复合物的形成，从而可以通过温度调节有效地控制热解。因此，焙烧增强了热解过程中温度依赖性的选择性，产生30 %酮，37 %酚，16 %呋喃和2 %酸。焙烧通过高效的生物质预处理提高了热解产物的质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Assessing the contribution of torrefaction during Chilean Oak pyrolysis: A kinetic/thermodynamic study and evolved gases compositional analysis

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Assessing the contribution of torrefaction during Chilean Oak pyrolysis: A kinetic/thermodynamic study and evolved gases compositional analysis

Biomass pyrolysis allows waste valorisation by converting it into valuable liquids. Elevated acid and oxygen compound concentrations diminish pyrolytic liquid quality. This study assessed biomass torrefaction’s effect on decreasing acid content in pyrolysis and increasing value-added compounds. Chilean oak received four torrefaction treatments with variations in final temperatures and isothermal durations. Biomass samples underwent pyrolysis using a thermogravimetric analyser and an analytical pyroliser to assess kinetic behaviour and identify decomposition products. Torr3 (573 K, 30 min) exhibited the highest torrefaction severity index (TSI). Results indicated that elevated TSI correlated with a 3.29 % decrease in hemicellulose content, a nearly 90 % increase in total lignin, and stable cellulose levels. The activation energy for biomass decomposition rose with TSI. The results indicated that torrefaction enhances lignin-carbohydrate complex formation, allowing for effective pyrolysis control via temperature modifications. Thus, torrefaction enhanced temperature-dependent selectivity in pyrolysis, resulting in 30 % ketones, 37 % phenols, 16 % furans, and 2 % acids. Torrefaction raises the quality of pyrolytic products through efficient biomass pre-treatment.

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来源期刊

Industrial Crops and Products 农林科学-农业工程

CiteScore

9.50

自引率

8.50%

发文量

1518

审稿时长

43 days

期刊介绍： Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.