用TG-FTIR-MS研究污水污泥和稻壳共热解:热解行为、动力学和可凝/不可凝气体特征

IF 9 1区 工程技术 Q1 ENERGY & FUELS
Chengxin Wang, Haobo Bi, Qizhao Lin, Xuedan Jiang, Chunlong Jiang
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引用次数: 107

摘要

本研究采用热重-傅里叶变换红外光谱-质谱(TG-FTIR-MS)技术对污水污泥(SS)和稻壳(RH)共热解过程中的热解行为、动力学和可凝/不可凝气体特征进行了评价。质量损失分为两个阶段:主要的脱挥发和大分子物质的持续轻微分解。共热解过程改善了热解行为,SS与RH的相互作用表现出协同抑制作用。30% RH共混时平均活化能最低;采用Coats-Redfern方法建立的Diffusion 3D (Zhrualev-Lesokin-Tempelmen)反应模型可以拟合热解过程。FTIR检测了官能团和可凝/不可凝气体(O- h、C=O、C-O、C- h苯骨架、CO、CO2),揭示了可凝/不可凝气体在促进共混物中C-O、C=O和CO2释放过程中的协同作用。通过质谱法检测可冷凝和不可冷凝产物(包括脂肪烃和芳香烃、CO2、NOx和SOx)。结果表明,CO2是主要的气态产物,证实了CO2在共热解过程中释放量的增加。在原料共混物热解过程中,烃类(C2H6、C4H7+、C4H8)和污染物(SO、SO2和甲苯)的释放量均显著增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Co-pyrolysis of sewage sludge and rice husk by TG–FTIR–MS: Pyrolysis behavior, kinetics, and condensable/non-condensable gases characteristics

In this study, pyrolysis behavior, kinetics, and condensable/non-condensable gases characteristics during co-pyrolysis of sewage sludge (SS) and rice husk (RH) were evaluated using Thermogravimetric–Fourier transform infrared spectrometry–Mass spectrometry (TG–FTIR–MS). The mass loss was divided into two stages: the main devolatilization and the continuous slight decomposition of macromolecular substances. The pyrolysis behavior was improved during co-pyrolysis, and the interaction between SS and RH showed synergistic and inhibitive effects. The lowest average activation energy was obtained at 30% RH blending; the Diffusion 3D (Zhrualev–Lesokin–Tempelmen) reaction model can fit the pyrolysis process using the Coats–Redfern method. The functional groups and condensable/non-condensable gases (O-H, C=O, C-O, C-H benzene skeleton, CO, CO2) were detected by FTIR, revealing the synergistic effect on the evolution of condensable/non-condensable gases in the promotion of C-O, C=O and CO2 release in blends. The condensable and non-condensable products were detected via MS (including aliphatic and aromatic hydrocarbons, CO2, NOx and SOx). The results showed that CO2 was the main gaseous product and confirmed an enhancement of the CO2 release during co-pyrolysis. The release of both hydrocarbons (C2H6, C4H7+, C4H8) and pollutants (SO, SO2 and toluene) were significantly increased when dealing with pyrolysing the feedstock blend.

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来源期刊
Renewable Energy
Renewable Energy 工程技术-能源与燃料
CiteScore
18.40
自引率
9.20%
发文量
1955
审稿时长
6.6 months
期刊介绍: Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.
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