The energy recovery from biomass and it’s utilisation as fuels and chemicals has been gaining interest in recent years. The production of syngas from sugarcane pyrolysis and gasification is investigated. Pyrolysis studies of sugarcane bagasse are performed using thermogravimetry (TG) at different heating rates (10, 20, 40, 100, 250 K/min). A mass spectrometry (MS) coupled with TG is used to detect the evolved gases. The effect of pyrolysis heating rate on char yield and evolved gases are examined. The resultant char is gasified in steam ambience under isothermal and non-isothermal conditions. The results are shown that sugarcane pyrolysis, char-gasification and gas release (H2, H2O, CO, CO2 and hydrocarbons) processes are influenced by the heating rate. Char gasification kinetics are estimated using volumetric, grain and random pore models under isothermal conditions. Similarly, sugarcane bagasse pyrolysis and gasification kinetics under non-isothermal conditions in steam and air ambience is estimated using Friedman, KAS (Kissinger–Akahira–Sunose) and FWO (Flynn–Wall–Ozawa) methods for all the mass conversion levels. The activation energy of steam gasification is more than twice when compared to air gasification (partial oxidation) process while using FWO and KAS methods Altogether, these results contribute to better understanding of the sugarcane bagasse pyrolysis and gasification features for gasifier process modeling.

中文翻译：

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使用热重法、质谱法和动力学模型对甘蔗渣热解和气化进行能量回收分析

近年来，从生物质中回收能量并将其用作燃料和化学品引起了人们的兴趣。研究了从甘蔗热解和气化生产合成气。甘蔗渣的热解研究使用热重法 (TG) 在不同的加热速率（10、20、40、100、250 K/min）下进行。质谱 (MS) 与 TG 结合用于检测逸出的气体。检查了热解加热速率对炭产率和放出气体的影响。所得炭在等温和非等温条件下在蒸汽环境中气化。结果表明，甘蔗热解、炭化和气体释放（H2、H2O、CO、CO2 和碳氢化合物）过程受加热速率的影响。使用体积估算炭气化动力学，等温条件下的颗粒和随机孔隙模型。类似地，使用 Friedman、KAS（Kissinger-Akahira-Sunose）和 FWO（Flynn-Wall-Ozawa）方法在蒸汽和空气环境中的非等温条件下估计甘蔗渣热解和气化动力学，用于所有质量转化水平。与使用 FWO 和 KAS 方法时的空气气化（部分氧化）过程相比，蒸汽气化的活化能是两倍以上。 总之，这些结果有助于更好地了解甘蔗渣热解和气化特征以进行气化器过程建模。KAS（Kissinger-Akahira-Sunose）和 FWO（Flynn-Wall-Ozawa）方法用于所有质量转换水平。与使用 FWO 和 KAS 方法时的空气气化（部分氧化）过程相比，蒸汽气化的活化能是两倍以上。 总之，这些结果有助于更好地了解甘蔗渣热解和气化特征以进行气化器过程建模。KAS（Kissinger-Akahira-Sunose）和 FWO（Flynn-Wall-Ozawa）方法用于所有质量转换水平。与使用 FWO 和 KAS 方法时的空气气化（部分氧化）过程相比，蒸汽气化的活化能是两倍以上。 总之，这些结果有助于更好地了解甘蔗渣热解和气化特征以进行气化器过程建模。