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Evaluation of thermal decomposition characteristics and kinetic parameters of melina wood
Biofuels ( IF 2.1 ) Pub Date : 2019-08-06 , DOI: 10.1080/17597269.2019.1646541
A. A. Adeleke 1 , J. K. Odusote 1 , O. A. Lasode 2 , P. P. Ikubanni 3 , M. Madhurai 4 , D. Paswan 4
Affiliation  

Abstract

The evaluation of thermal decomposition characteristics and kinetic parameters of melina wood were investigated. Proximate, ultimate and calorific value analyses of the melina wood were carried out based on standards. Melina wood was subjected to multiple heating rates (5–15 °C/min) in thermogravimetric experiment. Two prominent isoconversional methods (Flynn-Wall-Ozawa and Starink) were adopted to obtain kinetic parameters from the non-isothermal thermogravimetric analysis curves. The ash, volatile matter and carbon contents of the melina were 2.15, 81.42 and 47.05%, respectively, while the calorific value was 18.72 MJ/kg. The main devolatilization stage of melina ranged from 220 °C to 350 °C while 80% weight loss was obtained below 400 °C. The activation energy varied between approximately 15 and 162 kJ/mol as a function of degree of conversion. The pre-exponential factors varied between 1.60E + 2 and 5.67 E + 12/min. The decomposition kinetic mechanism of melina is concluded to be a multi-step reaction.



中文翻译:

紫檀木的热分解特性及动力学参数评价

摘要

研究了melina木材的热分解特性和动力学参数的评价。melina 木材的近似值、极限值和热值分析是根据标准进行的。在热重实验中,Melina 木材经受了多种加热速率(5–15 °C/min)。采用两种主要的等转化方法(Flynn-Wall-Ozawa 和 Starink)从非等温热重分析曲线中获得动力学参数。蜜饯的灰分、挥发分和碳含量分别为2.15%、81.42%和47.05%,热值为18.72 MJ/kg。melina 的主要脱挥阶段在 220 °C 到 350 °C 之间,而在 400 °C 以下获得 80% 的失重。作为转化度的函数,活化能在大约 15 到 162 kJ/mol 之间变化。指数前因子在 1.60E + 2 和 5.67 E + 12/min 之间变化。melina的分解动力学机制被认为是一个多步反应。

更新日期:2019-08-06
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