通过热解实现剩余生物质的增值：工艺条件对产品的影响,Sustainable Energy & Fuels

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通过热解实现剩余生物质的增值：工艺条件对产品的影响
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2023-12-04 , DOI: 10.1039/d3se01216f
A. C. M. Vilas-Boas ₁ , L. A. C. Tarelho ₁ , H. S. M. Oliveira ₁ , F. G. C. S. Silva ₁ , D. T. Pio ₁ , M. A. A. Matos ₁

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在可持续残余生物质管理的背景下，这项工作探索了使用小型固定床反应器的残余生物质的热解过程。主要重点是综合分析不同森林和农林业生物量、热解温度（350、450和550℃）和加热速率（2、10和30℃min）的影响⁻¹）对生物炭、生物油和永久气体产品的收率以及生物炭和永久气体的组成的影响。该分析提供了一系列有价值的见解，以支持热解项目的进展及其向工业生产的扩展，促进多功能产品的创建。研究表明，生物炭、生物油和永久气体的干产量分别为0.22至0.47、0.26至0.59、0.17至0.41 kg·kg⁻¹分别是生物量。橄榄果渣热解生物炭产量最大，桉木锯末热解生物油产量最大，芦苇热解永久气体产量最大。温度升高导致生物炭产量降低和生物油产量增加。加热速率的增加导致生物炭产量降低和生物油产量增加。生物炭的碳含量高于 0.7 kg kg⁻¹ 干无灰，LHV 在 24.2 至 30.5 MJ kg 之间⁻¹ 干燥生物炭，表明土壤富集和能量矢量的潜力。永久气体的 LHV 介于 5.4 至 9.7 MJ Nm⁻³ 之间，似乎可用作支持热解过程的热能源。

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Valorisation of residual biomass by pyrolysis: influence of process conditions on products

In the context of sustainable residual biomass management, this work explores the pyrolysis process of residual biomass using a bench-scale fixed bed reactor. The main focus is to comprehensively analyze the effects of diverse forest and agroforestry biomass, pyrolysis temperature (350, 450 and 550 °C) and heating rate (2, 10 and 30 °C min⁻¹) on the yield of the products biochar, bio-oil and permanent gas, and on the composition of biochar and permanent gas. This analysis provides a valuable collection of insights to support the advancement of pyrolysis projects and their expansion into industrial production, facilitating the creation of versatile products. The study showed that the biochar, bio-oil and permanent gas yields were between 0.22 and 0.47, 0.26 and 0.59 and 0.17 and 0.41 kg kg⁻¹ dry biomass, respectively. The pyrolysis of olive pomace has the maximum biochar yield, that of eucalyptus sawdust has the maximum bio-oil yield, and that of giant reed has the maximum permanent gas yield. The increased temperature led to a decreased biochar yield and an increased bio-oil yield. The increased heating rate led to a decreased biochar yield and an increased bio-oil yield. Biochar has a carbon content above 0.7 kg kg⁻¹ dry ash free, with an LHV between 24.2 and 30.5 MJ kg⁻¹ dry biochar, suggesting potential for soil enrichment and the energy vector. Permanent gas has an LHV between 5.4 and 9.7 MJ Nm⁻³, and seems useful as a thermal energy source to support the pyrolysis process.

更新日期：2023-12-04

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