Effect of Low-Temperature Torrefaction Pretreatment on the Energy–Mass Co-Benefit of Corn Straws

IF 3.5 3区工程技术 Q3 ENERGY & FUELS

Energy Science & Engineering Pub Date : 2025-04-04 DOI:10.1002/ese3.70068

Yantao Yang, Lei Song, Mei Yang, Peng Liu, Tingzhou Lei

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Abstract

To explore the effects of low-temperature torrefaction on physicochemical properties and energy–mass co-benefit of corn straws, the products obtained after torrefaction at different low temperatures were studied. Through proximate analysis, ultimate analysis, scanning electron microscopy, and higher calorific value, the effects of different low-temperature torrefaction on physicochemical properties of corn straws and energy–mass co-benefit were studied. The results showed as follows: After low-temperature torrefaction pretreatment, with the decrease of volatile matter, the H/C ratio decreased by 21.59%, the O/C ratio decreased by 19.05%, and the higher calorific value increased by 14.78% from 19.42 to 22.29 MJ·kg⁻¹. Therefore, low-temperature torrefaction pretreatment can promote the volatilization of light components in corn straws, significantly increase the fixed carbon content, and then improve the mass density and energy quality into high-grade fuels. The improvement of mass density is convenient for storage and transportation, and the improvement of energy–mass is convenient for improving the calorific value of combustion.

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低温焙烧预处理对玉米秸秆能量-质量协同效益的影响

为探讨低温焙烧对玉米秸秆理化性质和能质比效益的影响，对不同低温焙烧后的玉米秸秆产品进行了研究。通过近似分析、极限分析、扫描电镜和高热值分析，研究了不同低温焙烧方式对玉米秸秆理化性质和能质协同效益的影响。结果表明：低温焙烧预处理后，随着挥发物的减少，H/C比降低了21.59%，O/C比降低了19.05%，高热值从19.42 MJ·kg−1提高到22.29 MJ·kg−1，提高了14.78%。因此，低温焙烧预处理可以促进玉米秸秆中轻组分的挥发，显著提高固定碳含量，进而提高质量密度和能源质量，制成高档燃料。质量密度的提高有利于储存和运输，能量质量的提高有利于燃烧热值的提高。

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来源期刊

Energy Science & Engineering Engineering-Safety, Risk, Reliability and Quality

CiteScore

6.80

自引率

7.90%

发文量

298

审稿时长

11 weeks

期刊介绍： Energy Science & Engineering is a peer reviewed, open access journal dedicated to fundamental and applied research on energy and supply and use. Published as a co-operative venture of Wiley and SCI (Society of Chemical Industry), the journal offers authors a fast route to publication and the ability to share their research with the widest possible audience of scientists, professionals and other interested people across the globe. Securing an affordable and low carbon energy supply is a critical challenge of the 21st century and the solutions will require collaboration between scientists and engineers worldwide. This new journal aims to facilitate collaboration and spark innovation in energy research and development. Due to the importance of this topic to society and economic development the journal will give priority to quality research papers that are accessible to a broad readership and discuss sustainable, state-of-the art approaches to shaping the future of energy. This multidisciplinary journal will appeal to all researchers and professionals working in any area of energy in academia, industry or government, including scientists, engineers, consultants, policy-makers, government officials, economists and corporate organisations.