印度喜马拉雅地区松针生物炭转化为清洁燃料的热动力学和技术经济分析

Q1 Environmental Science

Bioresource Technology Reports Pub Date : 2025-03-31 DOI:10.1016/j.biteb.2025.102104

Ujjiban Kakati, Imlisongla Aier, Abhijeet Anand, Priyanka Kaushal

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引用次数: 0

摘要

由掉落的松针引起的森林火灾已经成为印度喜马拉雅地区的一个威胁。通过热重分析和动力学研究，采用5、10、15和20℃/min四种升温速率对PN的热分解行为进行了优化。理化特性对比分析表明，在600℃、升温速率10℃/min条件下，PN制得的生物炭最适合与煤共烧。据估计，在北阿坎德邦、喜马偕尔邦、印度东北部、查谟和安邦，从倒下的PN中可以生产约240万吨生物炭，价值6.6太瓦时的电力。克什米尔。考虑到生物炭转化过程中的能源消耗，剩余的生物炭有470万吨煤当量，相当于6.4太瓦时的发电潜力，可以减少5.8亿吨二氧化碳当量的化石排放。经济分析表明，生物炭生产成本为0.21美元/公斤，热解装置投资回收期为3.9年，在经济上是可行的。

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Thermo-kinetic and techno-economic analysis of biochar conversion of pine needles for clean fuel production in the Himalayan region of India

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Thermo-kinetic and techno-economic analysis of biochar conversion of pine needles for clean fuel production in the Himalayan region of India

Forest fires due to fallen pine needles (PN) have become a menace in Indian Himalayan region. The authors studied thermal decomposition behaviour of PN through thermogravimetric analysis and kinetic study using four heating rates– 5, 10, 15 and 20 °C/min for pyrolysis parameter optimization. Comparative analysis of physiochemical characteristics showed that biochar produced from PN at 600 °C with 10 °C/min heating rate is the most suitable for cofiring with coal. It was estimated that about 2.4 MT biochar worth 6.6 TWh of electricity could be produced from fallen PN in Uttarakhand, Himachal Pradesh, North-East India, Jammu & Kashmir. After accounting for energy consumption in biochar conversion, surplus biochar has 4.7 MT coal equivalence worth 6.4 TWh electricity generation potential, which could reduce 5.8 MTCO₂e fossil-based emissions. Economic analysis indicated that biochar production cost at 0.21 USD/kg with a payback time of 3.9 years for pyrolysis setup is economically viable.

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