Thermal processes like pyrolysis of biomass briquettes are frequently used to produce char with highly calorific value. The aim of this work was to obtain briquettes from various mixtures of peanut shells (PS) and grape pruning (GP) with different particle sizes, followed by pyrolysis of these briquettes to increase their heating value. The proximate analysis, physical and mechanical properties and energy analysis for biomass and char briquettes were measured. The PS and GP treatments were ground to an average particle size of 4, 8, and 12 mm, after which the particles of PS and GP were mixed with a starch binder (SB) in the weight ratios 50:40:10, 40:50:10 and 50:50:0, respectively. Drying, grinding, adding binder, densifying the residues and its pyrolysis were done to produce nine treatments of biomass and char briquettes. According to the results, statistical analysis validated that all properties of the biomass and char briquettes depend on the mixing percent and particle size of the raw material. The treatment (peanut shells (50 %), grape pruning (40 %) starch binder (10 %)) with particle sizes 4 mm achieved the best values of heating value 18.24, 21.14 MJ kg−1 with an energy yield 81.12 %, density 914.9, 771.4 kgm−3, compressive strength 8.24, 1.57 × 10−3MPa and durability 99.86 and 95.89 % for biomass and char briquettes respectively. The net energy for produce 1 kg of biomass and char briquettes was 17.89 and 20.71 MJ respectively. The net yield for produce a ton of biomass and char briquettes were approximately 101.69 and 233.25 $ton−1 respectively.

中文翻译：

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热解过程对不同粒径花生壳和葡萄修剪残留物产生的煤球特性的影响


生物质煤球热解等热处理经常用于生产具有高热值的焦炭。这项工作的目的是从不同粒径的花生壳 （PS） 和葡萄修剪 （GP） 的各种混合物中获得煤球，然后对这些煤球进行热解以提高其热值。测量了生物质和炭煤球的近似分析、物理和机械性能以及能量分析。将 PS 和 GP 处理研磨成平均粒径为 4、8 和 12 mm，然后将 PS 和 GP 颗粒分别以 50：40：10、40：50：10 和 50：50：0 的重量比与淀粉粘合剂 （SB） 混合。干燥、研磨、添加粘合剂、致密化残留物及其热解，生产了九次生物质和炭化煤球处理。根据结果，统计分析验证了生物质和炭化块的所有特性都取决于原材料的混合百分比和粒径。粒径为 4 mm 的处理（花生壳 （50 %）、葡萄修剪 （40 %）淀粉粘合剂 （10 %））达到了最佳值，即生物质和炭块的热值 18.24、21.14 MJ kg-1，能量产率 81.12 %，密度 914.9、771.4 kgm-3，抗压强度 8.24、1.57 × 10-3MPa，耐久性分别为 99.86 和 95.89 %。生产 1 公斤生物质和炭煤球的净能量分别为 17.89 和 20.71 MJ。生产一吨生物质和炭煤球的净产量分别约为 101.69 和 233.25 $ton−1。