Bio-Crude-Oil from Fluidized Bed Pyrolysis of Rice Straw and its Characterization
Bio-Crude-Oil from Fluidized Bed Pyrolysis of Rice Straw and its Characterization
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稻草流化床热解生物原油及其表征
DOI：
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发表时间：
2002
影响因子：
0.7
通讯作者：
Md. Nurun Nabi
中科院分区：
文献类型：
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作者：
M. Islam;M. Islam;Md. Nurun Nabi
南亚所有国家都盛产水稻。净稻米产量的约130%是作为秸秆形式的生物质固体废物产生的。对生物质固体废弃物进行了表征，研究了其作为热化学转化原料的适用性。考虑到稻草的可利用性，其有利的挥发性含量，以及元素和热特性，我们尝试将固体废物转化为生物油。采用外加热1443 cm 3体积的流化床反应器，以氮气为流化气体，硅砂为床料，对颗粒状固体稻草进行热解。采用可再生能源生物质源圆柱形加热器和重力进料式反应器给料器分别对反应器进行加热和给料。热解产物为油、炭和气体。结果表明，工艺条件对产品收率有显著影响。利用傅里叶变换红外光谱（FTIR）测定了成品油的物理性质、热值、元素（CHONS）分析和化学成分。这些分析考虑了在最大产液条件下得到的油。最佳反应条件为反应器床温450℃，流化气流量31 l/min。分析结果表明，该油为高氧、酸性、中等热值、良好的倾点和闪点。
Rice is grown abundantly in all of the South Asian countries. About 130 wt% of net rice production is generated as biomass solid waste in the form of rice straw. The biomass solid waste has been characterized to investigate its suitability as feedstock for thermochemical conversion. Considering this availability of rice straw, its favorable volatile content, and elemental and thermal characteristic, an attempt has been made to convert the solid waste into bio-oil. The solid rice straw in particle form was pyrolysed in an externally heated 1443 cm 3 volume fluidized bed reactor with nitrogen as the fluidizing gas and silica sand as the bed material. A renewable energy biomass source cylindrical heater and a gravity feed type reactor feeder were used to heat and to feed the reactor, respectively. The pyrolytic products were oil, char and gas. The product yields were found to be significantly influenced by the process conditions. The physical properties, calorific value, elemental (CHONS) analysis and chemical composition using Fourier Transform InfraRed spectroscopy ( FTIR ) of the product oil were determined. The oil obtained at maximum liquid yield condition was considered for these analyses. The optimum reaction condition was at 450 ° C reactor bed temperature and 31 l/min fluidizing gas flow rate. The results of the analyses showed that the oil was highly oxygenated, acidic in nature with moderate heat value and favorable pour and flash points.