Effects of operating variables on durability of fuel briquettes from rice husks and corn cobs
Effects of operating variables on durability of fuel briquettes from rice husks and corn cobs
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DOI：
10.1016/j.fuproc.2015.01.022
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发表时间：
2015-05-01
影响因子：
7.5
通讯作者：
Stegemann, Julia A.
中科院分区：
文献类型：
--
作者：
Muazu, Rukayya I.;Stegemann, Julia A.
生物质致密化过程增加了燃料能量密度，以实现更有效的运输。这项研究提出了新的数据表明，混合不同类型的生物质提高了致密生物质压块的性能。具体的目标是调查样品批次（生物质源），材料比例（稻壳，玉米棒），除了粘合剂（淀粉和水的混合物）和压实压力，对生物质的性能，使用析因实验的影响。型煤的单位密度高达1.9倍的松散的生物质体积密度，并从个别材料比型煤更强。考虑到来自两种生物质来源的平均值，对于具有10%粘合剂的稻壳与玉米棒的3：7混合物，在31 MPa的压实压力下实现了176 kPa的无侧限抗压强度。这些压块是耐用的，在磨损过程中只有4%的质量损失，在破碎试验中只有10%的质量损失，它们比松散的玉米棒吸收的水少36%。结果的统计分析表明，淀粉和水的加入是必要的足够的抗弯强度，但显着降低绿色和松弛密度。的生物量的来源有一个显着的影响致密化，这强调了需要了解生物量变异的因素。(C)2015爱思唯尔B.V.保留所有权利。
Biomass densification processes increase fuel energy density for more efficient transport. This study presents new data to show that blending different types of biomass improves the properties of densified biomass briquettes. The specific objectives were to investigate the effects of sample batch (biomass source), material ratio (rice husks to corn cobs), addition of binder (starch and water mixture) and compaction pressure, on briquette properties, using a factorial experiment.Briquettes had a unit density of up to 1.9 times the loose biomass bulk density, and were stronger than briquettes from the individual materials. Considering average values from two biomass sources, an unconfined compressive strength of 176 kPa was achieved at a compaction pressure of 31 MPa for a 3:7 blend of rice husks to corn cobs with 10% binder. These briquettes were durable, with only 4% mass loss during abrasion and 10% mass loss during shattering tests, They absorbed 36% less water than loose corn cobs. Statistical analysis of the results showed that starch and water addition was required for adequate briquette strength, but significantly reduced green and relaxed densities. The source of the biomass had a significant effect on densification, which emphasises the need to understand factors underlying biomass variability. (C) 2015 Elsevier B.V. All rights reserved.