Slow pyrolysis of rice straw: Analysis of products properties, carbon and energy yields
Slow pyrolysis of rice straw: Analysis of products properties, carbon and energy yields
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DOI：
10.1016/j.biortech.2013.12.084
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发表时间：
2014-03-01
影响因子：
11.4
通讯作者：
Park, Young-Kwon
中科院分区：
文献类型：
--
作者：
Park, Jinje;Lee, Yongwoon;Park, Young-Kwon
在稻草的许多用途中，将其热解的生物炭应用于土壤以提高作物生产力和封存CO2正受到更大的关注。本研究以稻秆为原料，在300-700 ℃的温度下进行缓慢热解，以表征生物质炭、生物质油和不凝性气体的产率和详细组成。分析了生物炭的pH值，微观表面积和孔体积分布。虽然有机部分的质量产率在500摄氏度以上仅为约25%，但生物炭是热解的主要产物，含有来自秸秆的40%的能量和45%的碳。利用副产品（生物油和气体）作为能源是必不可少的，因为能源产量的总和约为60%。气体可以燃烧以产生用于自热热解过程的热量，但是热平衡受到原料的水分含量的显著影响。(C)2013爱思唯尔有限公司保留所有权利。
Among many uses of rice straw, application of its biochar from pyrolysis to the soil is receiving greater interest for increased crop productivity and sequestration of CO2. This study investigated slow pyrolysis of rice straw at 300-700 degrees C to characterize the yields and detailed composition of the biochar, bio-oil and non-condensable gases. Biochar was analyzed for pH, microscopic surface area and pore volume distribution. Although the mass yield for the organic fraction was only about 25% above 500 degrees C, biochar was the primary product of pyrolysis containing 40% of energy and 45% of carbon from the straw. The utilization of by-products (bio-oil and gases) as energy resources was essential, since the sum of energy yield was about 60%. The gases could be burned to produce the heat for an auto-thermal pyrolysis process, but the heat balance was significantly influenced by the moisture content of the raw material. (C) 2013 Elsevier Ltd. All rights reserved.