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Carbonization of corncobs for the preparation of barbecue charcoal and combustion characteristics of corncob char
Waste Management ( IF 8.1 ) Pub Date : 2020-03-09 , DOI: 10.1016/j.wasman.2020.02.036
Jacek Kluska , Mateusz Ochnio , Dariusz Kardaś

The paper examines the process of carbonization of waste from corncobs at carbonization temperatures within a range of 300–700 °C in a laboratory-scale reactor. These studies are important because of reductions in wood resources for the preparation of barbecue charcoal due to environmental protection laws and legislative processes in many countries aimed at the protection of forest resources. The results presented here include the physical and chemical properties of char as a function of carbonization temperatures as well as the characteristics of the heating rate of a fixed bed of corncobs and within a single corncob particle. The combustion characteristics of the char were determined using thermogravimetric analysis. The results show that the volatile matter yield of the char decreased, whereas the fixed carbon yield and higher heating value (HHV) increased, along with higher carbonization temperatures. TGA analysis shows that the ignition and burnout temperature of the char increased, with a simultaneous decrease in the value of the S index, along with increased carbonization temperatures. The results show that carbonization temperatures of 500 °C and above meet the standards for the production of barbecue charcoal.



中文翻译:

玉米芯碳化制烧烤用炭及其燃烧特性

本文研究了在实验室规模的反应器中,碳化温度在300-700°C范围内的玉米芯废物碳化的过程。这些研究之所以重要,是因为许多国家出于保护森林资源的目的通过了环境保护法律和立法程序,减少了用于制备烧烤木炭的木材资源。此处显示的结果包括炭的物理和化学性质随碳化温度的变化以及玉米芯固定床和单个玉米芯颗粒内加热速率的特征。使用热重分析法确定炭的燃烧特性。结果表明,焦炭的挥发物产率降低,固碳产量和较高的热值(HHV)随碳化温度的升高而增加。TGA分析表明,炭的着火和燃尽温度升高,同时S指数值降低,同时碳化温度升高。结果表明,碳化温度在500°C或以上可满足烧烤木炭的生产标准。

更新日期:2020-03-09
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