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Pyrolysis behaviors of oil sludge based on TG/FTIR
and PY-GC/MS |
| Wei SONG,Jianguo LIU,Yongfeng NIE, |
| Department of Environmental
Science and Engineering, Tsinghua University, Beijing 100084, China; |
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Abstract Pyrolysis is an alternative technology for oil sludge treatment. Thermogravimetric Analysis-Fourier Transform Infrared Spectroscopy and Pyrolysis-Gas Chromatography/Mass Spectrometry were employed to investigate the pyrolysis process and products of oil sludge. The pyrolysis process was divided into five stages: drying and gas desorption, oil volatilization, main pyrolysis, semi-coke charring, and mineral decomposition. The main reaction temperatures ranged from 497.6 K to 753.2 K. The products were mainly composed of pairs of alkane and alkene (carbon number ranges from 1 to 27). The mechanisms consisted of random chain scission followed by end chain scission at high temperatures with volatilization occurring during the whole process. This study is useful not only for the proper design of a pyrolysis system, but also for improving the utilization of liquid oil products.
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| Keywords
oil sludge
pyrolysis
Thermogravimetric Analysis-Fourier Transform Infrared Spectroscopy (TG-FTIR)
Pyrolysis-Gas Chromatography/Mass Spectrometry (PY-GC/MS)
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Issue Date: 05 March 2010
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