Study on the co-pyrolysis of rice straw and high density polyethylene blends using TG-FTIR-MS
Study on the co-pyrolysis of rice straw and high density polyethylene blends using TG-FTIR-MS
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DOI：
10.1016/j.enconman.2017.05.026
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发表时间：
2017-08-15
影响因子：
10.4
通讯作者：
Zhang, Tao
中科院分区：
文献类型：
--
作者：
Kai, Xingping;Li, Rundong;Zhang, Tao
采用热重-傅里叶变换红外光谱-质谱仪(TG-FTIR-MS)研究了RS与HDPE相互作用对稻草(RS)与高密度聚乙烯(HDPE)共热解过程中挥发分组成及其分布的影响。结果表明，RS/HDPE共混物的热解过程分为两个阶段。第一阶段主要是RS的分解。第二阶段以HDPE降解为主。在435~520℃温度范围内，RS与HDPE之间的相互作用明显，HDPE的存在延缓了RS的第一步降解，而第二步RS的存在则延缓了HDPE的降解。共混物的主要气体产物来自单独的RS和HDPE的分解产物的重叠。然而，与单独的RS和HDPE的分解相比，共混物中没有观察到新的物质。主要气态产物为Hy、H2O、CO2、CO、醛(C2H4O)、醇(C2H5OH)、羧基(CH3COOH)和烃类(CH4、C2H2、C2H4、C2H6、C3H6、C3H8)。在共混物中加入HDPE可以减少含氧化合物的含量，提高Hy和碳氢化合物的产率。RS与HDPE的相互作用对挥发分演化的影响受RS在共混物中所占比例的影响。(C)2017爱思唯尔有限公司。保留所有权利。
The effects of interactions between RS and HDPE on the evolution of volatile species and their distributions during co-pyrolysis of rice straw (RS) and high density polyethylene (HDPE) was investigated by thermogravimetric analyzer coupled with fourier transform infrared spectroscopy and mass spectrometry technology (TG-FTIR-MS). It can be found that the pyrolysis process of RS and HDPE blends was characterized by two stages. The first stage primarily consisted of the decomposition of RS. The second stage was dominant by the degradation of HDPE. The interactions between RS and HDPE were obvious in the temperature range of 435-520 degrees C. The existence of HDPE delayed the decomposition of RS in the first step, while in the second step, the existence of RS delayed the degradation of HDPE. The primary gaseous products for the blends arose from the overlap of the decomposition products from the individual RS and HDPE. However, no new substance can be observed in the blends compared to the decomposition of individual RS and HDPE. The primary gaseous products were Hy, H2O, CO2, CO, aldehydes (C2H4O), alcohols (C2H5OH), carboxyls (CH3COOH) and hydrocarbons (CH4, C2H2, C2H4, C2H6, C3H6, C3H8). The addition of HDPE in the blends could decrease the amount of the oxygen-containing compounds, and improve the yield of Hy and hydrocarbons. The effects of the interaction between RS and HDPE on the evolving of volatile species were affected by the percentage of RS in the blends. (C) 2017 Elsevier Ltd. All rights reserved.