Experimental and numerical investigation on pyrolysis and combustion behavior of biomass bast fibers: Hemp, flax and ramie fibers

IF 5.8 2区化学 Q1 CHEMISTRY, ANALYTICAL

Journal of Analytical and Applied Pyrolysis Pub Date : 2024-11-22 DOI:10.1016/j.jaap.2024.106875

Heng Yu, Jingwen Wang, Zhoumei Xu, Bin Zou, Fukai Chu, Lei Song, Weizhao Hu, Yuan Hu

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引用次数: 0

Abstract

As an important renewable biomass material, bast fiber of crops has various application values. However, its flammable and decomposable characteristics bring challenges to its storage and practical applications. In this work, a steady-state tube furnace (SSTF) was built independently. And the pyrolysis and combustion behavior of three typical bast fibers: hemp, flax, and ramie were systematically studied. Among them, the total heat release of hemp and ramie was about 49.4 % higher than that of flax. And the average CO content of flax and ramie were 35.2 % and 39.5 % lower than hemp, respectively. Data-based fire hazard assessment illustrated that the hemp had the highest fire hazard. A Genetic Algorithm (GA)-based four-step reaction model was proposed and accurately predicted the pyrolysis process of bast fibers (F_dev≤0.016). Furthermore, the pyrolysis products of bast fibers were studied based on TG-FTIR and PY-GC-MS. On this basis, the possible production mechanism of pyrolysis products was proposed. This work will provide a reference for research on pyrolysis and combustion of biomass.

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生物质韧皮纤维热解和燃烧行为的实验和数值研究：大麻、亚麻和苎麻纤维

作为一种重要的可再生生物质材料，农作物韧皮纤维具有多种应用价值。然而，其易燃、易分解的特性给其储存和实际应用带来了挑战。在这项工作中，我们独立建造了稳态管式炉（SSTF）。系统研究了大麻、亚麻和苎麻三种典型韧皮纤维的热解和燃烧行为。其中，大麻和苎麻的总放热量比亚麻高出约 49.4%。亚麻和苎麻的二氧化碳平均含量分别比大麻低 35.2% 和 39.5%。基于数据的火灾危险性评估表明，大麻的火灾危险性最高。提出了基于遗传算法（GA）的四步反应模型，并准确预测了韧皮纤维的热解过程（Fdev≤0.016）。此外，还利用 TG-FTIR 和PY-GC-MS 对韧皮纤维的热解产物进行了研究。在此基础上，提出了热解产物的可能产生机理。这项工作将为生物质热解和燃烧研究提供参考。

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来源期刊

Journal of Analytical and Applied Pyrolysis 化学-分析化学

CiteScore

9.10

自引率

11.70%

发文量

340

审稿时长

44 days

期刊介绍： The Journal of Analytical and Applied Pyrolysis (JAAP) is devoted to the publication of papers dealing with innovative applications of pyrolysis processes, the characterization of products related to pyrolysis reactions, and investigations of reaction mechanism. To be considered by JAAP, a manuscript should present significant progress in these topics. The novelty must be satisfactorily argued in the cover letter. A manuscript with a cover letter to the editor not addressing the novelty is likely to be rejected without review.