Iron and Steel Research and Development Department, China Steel Corporation, Kaohsiung 812, Taiwan, ROC.
Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan, ROC.
Bioresour Technol. 2014 Jun;161:333-9. doi: 10.1016/j.biortech.2014.03.090. Epub 2014 Mar 26.
To evaluate the utility potential of pretreated biomass in blast furnaces, the fuel properties, including fuel ratio, ignition temperature, and burnout, of bamboo, oil palm, rice husk, sugarcane bagasse, and Madagascar almond undergoing torrefaction and carbonization in a rotary furnace are analyzed and compared to those of a high-volatile coal and a low-volatile one used in pulverized coal injection (PCI). The energy densities of bamboo and Madagascar almond are improved drastically from carbonization, whereas the increase in the calorific value of rice husk from the pretreatment is not obvious. Intensifying pretreatment extent significantly increases the fuel ratio and ignition temperature of biomass, but decreases burnout. The fuel properties of pretreated biomass materials are superior to those of the low-volatile coal. For biomass torrefied at 300°C or carbonized at temperatures below 500°C, the pretreated biomass can be blended with coals for PCI.
为了评估预处理生物质在高炉中的利用潜力，分析和比较了在转炉中进行干馏和碳化的竹子、油棕、稻壳、甘蔗渣和马达加斯加杏仁与高挥发分煤和用于喷煤（PCI）的低挥发分煤的燃料特性，包括燃料比、着火温度和燃尽率。竹子和马达加斯加杏仁经过碳化后能量密度大幅提高，而稻壳经过预处理后热值的增加并不明显。强化预处理程度显著提高了生物质的燃料比和着火温度，但降低了燃尽率。预处理生物质材料的燃料特性优于低挥发分煤。对于在 300°C 下干馏或在 500°C 以下碳化的生物质，预处理后的生物质可以与煤混合用于 PCI。
