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玉米乙醇工业副产品的热解行为和动力学研究,以实现其生物能源潜力

Gaurav Singh¹, Ranjeet Kumar Mishra², Neeraj Kumar¹

¹Department of Applied Sciences, J. B. Institute of Technology, Veer Madho Singh Bhandari Uttarakhand Technical University Dehradun-248015 India.

|November 12, 2025

概括

蒸厂用可溶物干燥谷物 (DDGS) 热解是一种复杂的,多步骤的过程. 动力学和热力学分析揭示了其作为生物能源原料的潜力,与可持续发展目标保持一致.

科学领域:

化学工程是化学工程的重要组成部分.
生物质转换生物质转换
可再生能源可再生能源是可再生能源.

背景情况:

蒸厂的含有可溶性干谷物 (DDGS) 是生物乙醇生产的丰富副产品.
它丰富的有机成分使其成为生物能源应用的潜在候选者.
了解其热分解行为对于有效利用至关重要.

研究的目的:

为了研究DDGS的热解行为.
为了确定DDGS热解的动力学和热力学参数.
评估其作为生物能源原料的可行性.

主要方法:

热重力测量分析 (TGA) 在各种加热速率 (10,20,30°C分钟-1) 进行.
无模型 (KAS,OFW,STM,VZM) 和模型拟合 (CR,DAEM) 方法用于动力分析.
计算了热力学参数 (激活能量,,吉布斯自由能量,).

主要成果:

热解是一种多步骤的过程,明显的激活能量 (Ea) 从82到525kJmol-1.1不等.
考茨-雷德费恩配件显示了较低的激活能量 (36.34-39.32 kJ mol-1),反应顺序为1.0-2.7.7.
随着转换,度增加,而吉布斯自由能量保持正值,度从负值转变为正值.

结论:

DDGS热解是一种复杂的,多步骤的途径,受成分和矿物质的影响.
该过程需要外部能量,并在后期阶段变得更加混乱,与素降解有关.
结果支持DDGS用于生物能源的利用,与可持续发展目标 (SDGs) 保持一致.

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