当前位置: X-MOL 学术Biomass Bioenergy › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
TG/DSC and kinetic parametrization of the combustion of agricultural and forestry residues
Biomass & Bioenergy ( IF 5.8 ) Pub Date : 2022-05-31 , DOI: 10.1016/j.biombioe.2022.106485
Juan Jesús Rico , Raquel Pérez-Orozco , David Patiño Vilas , Jacobo Porteiro

The present paper discusses the data obtained from the thermogravimetric analysis and kinetic evaluation of seven different experimental solid biomasses representative of the Euroregion Galicia-North Portugal and commonly found in Europe. The samples comprised three raw, nonwoody biomasses and four additivated batches blended with kaolin and calcium carbonate. A TG-DSC analysis was performed on each sample under an oxidative atmosphere and three heating ratios, and the additives were found to increase the duration of the oxidation of carbon, its heat release, and displaced the reaction of volatile compounds to higher temperatures, while at the same time decreasing the peak heat emission caused by the volatiles up to a 40%. Three isoconversional methods, namely, Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose and Friedman were utilized to determine the activation energy and pre-exponential factor of the fuels, both globally and at intervals during conversion, and the results were found to be similar among the three methods, with values ranging from 47.07 kJ/mol to 228.31 kJ/mol for conversion degrees between 0.1 and 0.9. Fuels mixed with the additives mentioned exhibited lower activation energy values than their raw counterparts, suggesting an enhancement of the combustion conditions.



中文翻译:

农林废弃物燃烧的 TG/DSC 和动力学参数化

本文讨论了从热重分析和动力学评估中获得的数据,这些数据来自代表欧洲地区加利西亚-北葡萄牙且在欧洲常见的七种不同实验固体生物质。样品包括三种未加工的非木质生物质和四种与高岭土和碳酸钙混合的添加剂批次。在氧化气氛和三种加热比下对每个样品进行 TG-DSC 分析,发现添加剂增加了碳的氧化持续时间、放热,并取代了挥发性化合物在更高温度下的反应,同时同时将由挥发物引起的峰值热量排放降低多达 40%。三种等转化方法,即 Flynn-Wall-Ozawa,Kissinger-Akahira-Sunose 和 Friedman 用于确定燃料的活化能和指前因子,包括全局和转换期间的间隔,发现三种方法的结果相似,值范围为 47.07 kJ /mol 至 228.31 kJ/mol,转化度在 0.1 和 0.9 之间。与上述添加剂混合的燃料比其原始燃料表现出更低的活化能值,这表明燃烧条件得到了改善。

更新日期:2022-06-03
down
wechat
bug