Fuel Wood Pellets Produced from Sawdust of Scots Pine Mature and Juvenile Wood: Self-Heating and Off-Gassing Tests at Industrial Scale

IF 3.1 3区 工程技术 Q3 ENERGY & FUELS BioEnergy Research Pub Date : 2024-03-12 DOI:10.1007/s12155-024-10736-5
Workson Siwale, Michael Finell, Stefan Frodeson, Gunnar Henriksson, Jonas Berghel
{"title":"Fuel Wood Pellets Produced from Sawdust of Scots Pine Mature and Juvenile Wood: Self-Heating and Off-Gassing Tests at Industrial Scale","authors":"Workson Siwale,&nbsp;Michael Finell,&nbsp;Stefan Frodeson,&nbsp;Gunnar Henriksson,&nbsp;Jonas Berghel","doi":"10.1007/s12155-024-10736-5","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigated self-heating and off-gassing of Scots pine (<i>Pinus sylvestris</i>) wood pellets made from sawdust generated from separated mature and juvenile wood. The pellets were produced at an industrial scale and stored in large piles of about 7.2 tonnes. The production process involved drying the sawdust using three different methods and to varying moisture contents. The results indicated significant influences of both raw material type (<i>F</i> <sub>(6)</sub> = 61.97, <i>p</i> &lt; 0.05) and drying method (<i>F</i> <sub>(2)</sub> = 65.38, <i>p</i> &lt; 0.05) on the self-heating of the pellets. The results from the multiple regression analysis further showed that both the raw material type and pellet moisture content significantly influenced the temperature increase, with strong correlations observed for pellets produced using low-temperature drying (<i>F</i> <sub>(3, 14)</sub> = 83.52, multiple <i>R</i><sup>2</sup> = 0.95, <i>p</i> &lt; 0.05), and medium temperature drying (<i>F</i> <sub>(3, 13)</sub> = 62.05, multiple <i>R</i><sup>2</sup> = 0.93, <i>p</i> &lt; 0.05). The pellets produced from fresh mature wood sawdust were found to be more prone to self-heating and off-gassing while steam drying the sawdust at high temperature and pressure led to a significant reduction in heat and gas generation across all materials. The heightened self-heating and off-gassing in mature wood pellet can be attributed to a higher proportion of sapwood in the raw material. The probable explanations to the observed differences are in line with biological mechanisms for self-heating and off-gassing, as well as the chemical oxidation of fatty and resin acids.</p></div>","PeriodicalId":487,"journal":{"name":"BioEnergy Research","volume":"17 3","pages":"1832 - 1842"},"PeriodicalIF":3.1000,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12155-024-10736-5.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"BioEnergy Research","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s12155-024-10736-5","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0

Abstract

This study investigated self-heating and off-gassing of Scots pine (Pinus sylvestris) wood pellets made from sawdust generated from separated mature and juvenile wood. The pellets were produced at an industrial scale and stored in large piles of about 7.2 tonnes. The production process involved drying the sawdust using three different methods and to varying moisture contents. The results indicated significant influences of both raw material type (F (6) = 61.97, p < 0.05) and drying method (F (2) = 65.38, p < 0.05) on the self-heating of the pellets. The results from the multiple regression analysis further showed that both the raw material type and pellet moisture content significantly influenced the temperature increase, with strong correlations observed for pellets produced using low-temperature drying (F (3, 14) = 83.52, multiple R2 = 0.95, p < 0.05), and medium temperature drying (F (3, 13) = 62.05, multiple R2 = 0.93, p < 0.05). The pellets produced from fresh mature wood sawdust were found to be more prone to self-heating and off-gassing while steam drying the sawdust at high temperature and pressure led to a significant reduction in heat and gas generation across all materials. The heightened self-heating and off-gassing in mature wood pellet can be attributed to a higher proportion of sapwood in the raw material. The probable explanations to the observed differences are in line with biological mechanisms for self-heating and off-gassing, as well as the chemical oxidation of fatty and resin acids.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
用苏格兰松成熟木和幼年木锯末生产的燃料木粒:工业规模的自加热和脱气试验
这项研究调查了苏格兰松木(Pinus sylvestris)木质颗粒的自加热和脱气情况,这些木质颗粒是用分离的成熟木材和幼年木材产生的锯屑制成的。木粒是以工业规模生产的,并储存在约 7.2 吨的大型木堆中。生产过程包括使用三种不同的方法将锯屑干燥到不同的含水率。结果表明,原料类型(F (6) = 61.97,p < 0.05)和干燥方法(F (2) = 65.38,p < 0.05)对木粒自热的影响都很大。多元回归分析的结果进一步表明,原料类型和颗粒含水率对温度升高有显著影响,低温干燥(F (3, 14) = 83.52,多重 R2 = 0.95,p <0.05)和中温干燥(F (3, 13) = 62.05,多重 R2 = 0.93,p <0.05)生产的颗粒有很强的相关性。用新鲜成熟木材锯屑生产的颗粒更容易产生自热和废气,而用高温高压蒸汽干燥锯屑则显著减少了所有材料的热量和废气产生。成熟木质颗粒的自热和废气产生率较高的原因是原料中边材的比例较高。对观察到的差异的可能解释与自热和脱气的生物机制以及脂肪酸和树脂酸的化学氧化作用一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
BioEnergy Research
BioEnergy Research ENERGY & FUELS-ENVIRONMENTAL SCIENCES
CiteScore
6.70
自引率
8.30%
发文量
174
审稿时长
3 months
期刊介绍: BioEnergy Research fills a void in the rapidly growing area of feedstock biology research related to biomass, biofuels, and bioenergy. The journal publishes a wide range of articles, including peer-reviewed scientific research, reviews, perspectives and commentary, industry news, and government policy updates. Its coverage brings together a uniquely broad combination of disciplines with a common focus on feedstock biology and science, related to biomass, biofeedstock, and bioenergy production.
期刊最新文献
Food Waste Ash Supported Nickel Catalyst to Steam Gasification of Food Waste for Enhanced Tar Reduction and Hydrogen Production Techno-Economic Analysis of Biodiesel Production from Chlorella vulgaris Using Different Potential Biorefinery Approaches Physicochemical and Energy Characteristics of Biochar and Hydrochar Derived from Cotton Stalks: A Comparative Study Biomass Gasification as a Viable Alternative for Small-scaled Combined Heat and Power Technologies in Remote Communities in Canada Microwave-Assisted Preparation of Solid Recovered Fuel from Food Waste and its Quality Prediction Using Linear Programming
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1