Corrosion-induced changes in bio-oil aging: A gas chromatography exploration

IF 9 1区工程技术 Q1 ENERGY & FUELS Renewable Energy Pub Date : 2024-08-14 DOI:10.1016/j.renene.2024.121193

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Abstract

Understanding the interactions between metals, corrosion products, and bio-oil (BO) is crucial for safe and efficient BO operations. This study explored BO aging and BO + steel (carbon steel (CS) and stainless steel (SS)) immersion at 80 °C for 168 h, alongside experiments adding synthetic Fe₂O₃ and Cr₂O₃ powders to BO. Gas generated was analyzed via gas chromatography (GC). Results showed 80 °C was an optimal pre-heating temperature for BO without gas evolution. BO aging at up to 220 °C for 24 h increased CO₂ and CO evolutions. CS immersion at 80 °C produced more H₂ and CO₂ than those at 50 °C, due to higher corrosion rates. The BO + Fe₂O₃ trial released less H₂ but more CO₂ compared to BO + CS immersion, due to internal BO reactions catalyzed by Fe₂O₃. BO + SS304L and BO + Cr₂O₃ trials showed similar H₂ and CO₂ production, highlighting the catalytic effect of Cr₂O₃. Leached Fe ions in BO formed chelate complexes with organic compounds, causing phase separation. These findings have significant implications for producing renewable biofuels via BO co-processing operations by emphasizing the need to optimize preheating temperatures, validate the compatibility of construction materials, and implement safety measures to mitigate gas accumulation risks.

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腐蚀引起的生物油老化变化：气相色谱法探索

了解金属、腐蚀产物和生物油（BO）之间的相互作用对于安全高效地运行生物油至关重要。本研究探讨了生物油老化和生物油 + 钢（碳钢 (CS) 和不锈钢 (SS)）在 80 °C 下浸泡 168 小时，以及向生物油中添加合成 Fe2O3 和 Cr2O3 粉末的实验。产生的气体通过气相色谱法（GC）进行分析。结果表明，80 °C是BO不产生气体的最佳预热温度。BO 在 220 °C 下老化 24 小时会增加 CO2 和 CO 的挥发。由于腐蚀速率较高，在 80 °C 下浸泡希尔思比在 50 °C 下浸泡希尔思产生更多的 H2 和 CO2。与 BO + CS 浸泡相比，BO + Fe2O3 试验释放的 H2 更少，但 CO2 更多，这是由于 Fe2O3 催化了 BO 的内部反应。BO + SS304L 和 BO + Cr2O3 试验显示出相似的 H2 和 CO2 生成量，突出了 Cr2O3 的催化作用。BO 中浸出的铁离子与有机化合物形成螯合物，导致相分离。这些发现强调了优化预热温度、验证建筑材料兼容性和实施安全措施以降低气体积累风险的必要性，从而对通过 BO 共处理操作生产可再生生物燃料具有重要意义。

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来源期刊

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.