The influence of recycling non-condensable gases in the fractional catalytic pyrolysis of biomass.
The influence of recycling non-condensable gases in the fractional catalytic pyrolysis of biomass.
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DOI：
10.1016/j.biortech.2012.02.015
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发表时间：
2012-05
影响因子：
11.4
通讯作者：
Ofei D. Mante;F. Agblevor;S. Oyama;R. Mcclung
中科院分区：
文献类型：
--
作者：
Ofei D. Mante;F. Agblevor;S. Oyama;R. Mcclung
本研究采用FCC催化剂，研究了回收不凝气体（NCG）在混合杨催化热解中的效果。研究使用了 50mm 小型流化床反应器，温度为 475°C，重时空速 (WHSV) 为 2h−1，并且具有气体回收能力。使用 CO/N2、CO2/N2、CO/CO2/N2 和 H2/N2 的流化气体混合物模型来确定它们的独立效应。研究发现，在该过程中回收 NCG 可能会增加液体产量并降低焦炭/焦炭产量。模型流化气体提高了液体产率，而CO2/N2流化气体的炭/焦炭产率最低。 13 C-NMR分析表明NCG的再循环增加了芳香族部分并减少了甲氧基、羧基和糖部分。 NCG的回收增加了生物油的较高热值和pH值，并降低了粘度和密度。
In this study, the effect of recycling the non-condensable gases (NCG) in the catalytic pyrolysis of hybrid poplar using FCC catalyst was investigated. A 50mm bench scale fluidized bed reactor at 475°C with a weight hourly space velocity (WHSV) of 2h−1and a gas recycling capability was used for the studies. Model fluidizing gas mixtures of CO/N2, CO2/N2, CO/CO2/N2and H2/N2were used to determine their independent effects. Recycling of the NCG in the process was found to potentially increase the liquid yield and decrease char/coke yield. The model fluidizing gases increased the liquid yield and the CO2/N2fluidizing gas had the lowest char/coke yield. The13C-NMR analysis showed that recycling of NCG increases the aromatic fractions and decreases the methoxy, carboxylic and sugar fractions. Recycling of NCG increased the higher heating value and the pH of the bio-oil as well as decreased the viscosity and density.