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《Science Technology and Engineering》 2017-18
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Experiment on Microstructure and Pyrolysis Characteristics of Oil Sands in Indonesia Based on TG and FTIR

LIU Hong-peng;GONG Shi-shang;JIA Chun-xia;WANG Qing;Engineering Research Centre of Oil Shale Comprehensive Utilization,Ministry of Education,School of Energy and Power Engineering,Northeast Dianli University;  
The microstructure and functional groups of four kinds of oil sands were studied by Fourier transform infrared spectroscopy( FTIR). The main functional groups of oil sands were semi-quantitatively analyzed by FTIR spectrum fitting. The results showed that the oil sands are composed of aromatic hydrocarbons, aliphatic hydrocarbons, hydroxyl functional groups and oxygen-containing functional groups, among which aromatic hydrocarbon structure and alcohols are the main components. The pyrolysis characteristics of oil sands were studied by using TGA/DSC1 synchronous thermal analyzer and Fourier transform infrared spectrometer( TG-FTIR). The effects of heating rate on pyrolysis characteristics were studied. And the release characteristics of volatile fractions and the H_2O,CO_2,CO,CH_4 and CnHmwere investigated during oil sand pyrolysis. The results showed that the pyrolysis process of oil sands is divided into three stages: dry degassing stage,low temperature and high pyrolysis stage. The volatilization of organic matter mainly occurred in the low temperature zone. With the increase of heating rate,the product release is more concentrated,pyrolysis characteristics tend to be better. During the pyrolysis of oil sands,free water is first precipitated,followed by disaggregation and dehydration. The main alkyl side chains are continuously broken off,the cyclization and oxygen-containing functional groups are gradually broken to form alkanes,carboxylic acids,alcohols and aldehydes and other substances. And methoxy( —O—CH_3),methylene( —CH_2—) and methyl( —CH_3) broken to form organic gases C_nH_m and CH_4 in the low temperature zone.
【Fund】: 吉林省教育厅“十二五”科学技术研究项目(2015236);; 吉林市科技创新发展计划(20166006)资助
【CateGory Index】: O657.33;TQ517.1
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