Co-pyrolysis under vacuum of sugar cane bagasse and petroleum residue - Properties of the char and activated char products
Co-pyrolysis under vacuum of sugar cane bagasse and petroleum residue - Properties of the char and activated char products
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DOI：
10.1016/s0008-6223(00)00204-9
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发表时间：
2001-01-01
期刊：
影响因子：
10.9
通讯作者：
Roy, C
中科院分区：
文献类型：
--
作者：
Darmstadt, H;Garcia-Perez, M;Roy, C
在500 ℃和8 kPa下真空热解甘蔗渣（5.7%水分）产生19.4%的炭、34.2%的热解油、27.8%的水和轻质有机化合物以及17.6%的气体。用水蒸气活化半焦可制得高比表面积（约1950 m2/g）的活性炭。那是：早先观察到甘蔗渣衍生的热解油（生物燃料）的性质可以通过将甘蔗渣与石油残渣共热解来改善。石油残渣的添加影响热解炭的产率和性质。热重分析表明，当大部分石油残渣发生热解时，甘蔗渣半焦的形成几乎完成。来自石油残渣热解的产物沉积在甘蔗渣炭上，增加其产率。根据表面光谱结果，当石油渣油的原料浓度达到15%时，甘蔗渣半焦的表面被完全覆盖。在此浓度下，炭产率达到最大值（30%）。与甘蔗渣焦相比，共热解焦产生具有较低表面积的活性炭。然而，由于从共热解炭衍生的活性炭仍然具有高的表面积和相应的热解油具有良好的燃烧性能，甘蔗渣与石油残渣的共热解可能是经济可行的。(C)2001爱思唯尔科技有限公司版权所有。
Vacuum pyrolysis of sugar cane bagasse (5.7% moisture) at 500 degreesC and 8 kPa yielded 19.4% charcoal, 34.2% pyrolytic oil, 27.8% water and light organic compounds and 17.6% gases. High surface area (similar to 1950 m(2)/g) activated carbon was obtained From the chars by steam activation. It was: earlier observed that the properties of bagasse-derived pyrolytic oil (biofuel) can be improved by co-pyrolysing the bagasse with petroleum residue. The addition of petroleum residue affects the yields and properties of the pyrolytic char. It was shown by thermogravimetry that the formation of the bagasse char is almost complete when the pyrolysis of the major portion of the petroleum residue occurs. Products from the petroleum residue pyrolysis are deposited on the bagasse char, increasing its yield. According to surface spectroscopic results, the surface of the bagasse char is completely covered when the feedstock concentration of petroleum residue reaches 15%. At this concentration the char yield reaches a maximum (30%). Co-pyrolysis chars yield activated carbon with a lower surface area as compared to bagasse chars. However, since the activated carbons derived from the co-pyrolysis char still have high surface areas and the corresponding pyrolytic oil has good combustion properties, co-pyrolysis of bagasse with petroleum residue might be economically feasible. (C) 2001 Elsevier Science Ltd. All rights reserved.