The influence of temperature and heating rate on the pyrolysis of biomass
The influence of temperature and heating rate on the pyrolysis of biomass
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DOI：
10.1016/0960-1481(96)00006-7
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发表时间：
1996-03-01
期刊：
影响因子：
8.7
通讯作者：
Besler, S
中科院分区：
文献类型：
--
作者：
Williams, PT;Besler, S
生物质的缓慢热解形式。在静态间歇式反应器中，在热解温度从300到720摄氏度和加热速率从5到80 Kmin（-1）的条件下，研究了松木的热解。测定了热解气体、热解油和固体焦的组成和性质与热解温度和升温速率的关系。此外，木材和木材的主要成分-纤维素，半纤维素和木质素在热重分析仪（TGA）中在相同的实验条件下，在静态间歇式反应器中热解。静态间歇反应器的结果表明，随着热解温度的升高，固体焦的质量百分比下降，而气体和油的产品增加。加热速率对产物产率的影响很小。木材在较低温度下分解，主要释放H2O、CO2和CO，在较高温度下，主要分解产物为油、H2O、H2-、烃类气体以及较低浓度的CO和CO2。傅立叶变换红外光谱和元素分析表明，他们是高度氧化的油。木材的TGA结果表明，两个主要制度的重量损失，较低的温度：制度可以与半纤维素的分解和纤维素分解的初始阶段，而较高的温度制度主要与纤维素分解的后期阶段。木质素的热分解发生在整个热解温度范围内。版权所有（C）1996 Elsevier Science Ltd.
The slow pyrolysis of biomass in the form. of pine wood was investigated in a static batch reactor at pyrolysis temperatures from 300 to 720 degrees C and heating rates from 5 to 80 K min(-1). The compositions and properties of the derived gases, pyrolytic oils and solid char were determined in relation to pyrolysis temperatures and heating rates. In addition, the wood and the major components of the wood-cellulose, hemicellulose and lignin were pyrolysed in a thermogravimetric analyser (TGA) under the same experimental conditions as in the static batch reactor. The static batch reactor results showed that as the pyrolysis temperature was increased, the percentage mass of solid char decreased, while gas and oil products increased. There was a small effect of heating rate on product yield. The lower temperature regime of decomposition of wood showed that mainly H2O, CO2 and CO were evolved and at the higher temperature regime, the main decomposition products were oil, H2O, H-2, hydrocarbon gases and lower concentrations of CO and CO2. Fourier transformation infra-red spectroscopy and elemental analysis of the oils showed they were highly oxygenated. The TGA results for wood showed two main regimes of weight loss, the lower temperature: regime could be correlated with the decomposition of hemicellulose and the initial stages of cellulose decomposition whilst the upper temperature regime correlated mainly with the later stages of cellulose decomposition. Lignin thermal decomposition occurred throughout the temperature range of pyrolysis. Copyright (C) 1996 Elsevier Science Ltd.