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Thermochemical, kinetic and ash characteristics behaviour of Thar Lignite, agricultural residues and synthetic polymer waste (EVA)
Fuel ( IF 7.4 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.fuel.2020.117151
Abdul Wahab , Hamed Sattar , Asma Ashraf , Syed Nadir Hussain , Mahmood Saleem , Shahid Munir

Abstract The study aimed to exploit the energy potential of naturally occurring fuels like Thar Lignite (TL), Sugarcane Bagasse (SB), Cotton Stalks (CS) and synthetic copolymer shoe manufacturing waste Ethylene Vinyl Acetate (EVA). Proximate, ultimate, chemical analysis along with Fourier transform infrared (FTIR) were carried out to analyze the compositional and structural differences between the studied fuel samples. Thermochemical decomposition of fuel samples was also evaluated using thermogravimetric analysis (TGA) under dry air conditions. Derivative thermogravimetry (DTG) obtained from TG curves were used to determine the ignition, peak, burnout temperatures along with combustion performance indices. The order of both average and peak rate of conversion (% s−1) was found to be; EVA > SB > CS > TL. Kinetic analysis of the samples was performed using Coats Redfern model. The apparent activation energy ‘Ea’ (kJ mole−1) was in the order of SB = 45.7 > EVA = 36.2 > CS = 36.1 > TL = 23.1. X-ray fluorescence (XRF) and ash fusion temperature (AFT) profile analysis of the ash samples was also performed to investigate the possible deposit formation propensity of post combustion residue products, alkali and slagging indices. SB showed the highest propensity towards slagging deposit formations with the order SB > CS > TL > EVA.

中文翻译:

塔尔褐煤、农业残留物和合成聚合物废料 (EVA) 的热化学、动力学和灰分特性行为

摘要 本研究旨在开发天然燃料的能源潜力,如塔尔褐煤 (TL)、甘蔗渣 (SB)、棉秆 (CS) 和合成共聚物制鞋废料乙烯醋酸乙烯酯 (EVA)。进行了近似、最终、化学分析以及傅里叶变换红外 (FTIR) 以分析所研究燃料样品之间的成分和结构差异。在干燥空气条件下,还使用热重分析 (TGA) 评估了燃料样品的热化学分解。从 TG 曲线获得的导数热重法 (DTG) 用于确定点火、峰值、燃尽温度以及燃烧性能指数。发现平均转化率和峰值转化率 (% s-1) 的顺序是:EVA > SB > CS > TL。使用 Coats Redfern 模型对样品进行动力学分析。表观活化能“Ea”(kJ 摩尔-1)的顺序为 SB = 45.7 > EVA = 36.2 > CS = 36.1 > TL = 23.1。还对灰样品进行了 X 射线荧光 (XRF) 和灰熔融温度 (AFT) 剖面分析,以研究燃烧后残留产物、碱和结渣指数可能的沉积物形成倾向。SB 显示出最高的结渣倾向,顺序为 SB > CS > TL > EVA。还对灰样品进行了 X 射线荧光 (XRF) 和灰熔融温度 (AFT) 剖面分析,以研究燃烧后残留产物、碱和结渣指数可能的沉积物形成倾向。SB 对结渣沉积物形成的倾向最高,顺序为 SB > CS > TL > EVA。还对灰样品进行了 X 射线荧光 (XRF) 和灰熔融温度 (AFT) 剖面分析,以研究燃烧后残留产物、碱和结渣指数可能的沉积物形成倾向。SB 对结渣沉积物形成的倾向最高,顺序为 SB > CS > TL > EVA。
更新日期:2020-04-01
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