Pyrolysis and combustion model of oil sands from non-isothermal thermogravimetric analysis data

Jia, Chunxia; Wang, Qing; Jianxin, Ge; Xu, Xiaofei

doi:10.1007/s10973-013-3591-4

Cited by 25 publications

(9 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In previous research, attention was mainly focused on studying the pyrolysis behaviors of oil sand and oil sand bitumen itself by thermogravimetric analysis (TG). − However, in view of the complicated thermal cracking process of oil sand bitumen, it is necessary to further study the thermal cracking process of oil sand bitumen in terms of chemical group composition which is divided into saturates, aromatics, resins, and asphaltenes (SARA). In addition, it is known that TG can only reveal the variation of the weight loss of the sample with heating temperature or heating time.…”

Section: Introductionmentioning

confidence: 99%

Thermal Cracking Characteristics and Kinetics of Oil Sand Bitumen and Its SARA Fractions by TG–FTIR

et al. 2017

View full text Add to dashboard Cite

The thermal cracking process of oil sand bitumen was investigated via studying the thermal cracking behaviors and online-gas-releasing characteristics of its SARA fractions (saturates, aromatics, resins, asphaltenes) by using TG−FTIR. The results showed that the asphaltenes contributed the most to coke formation of oil sad bitumen according to its largest weighted coke yield compared with that of others. The online FTIR analysis for the gases evolved from the thermal cracking process of oil sand bitumen and its SARA fractions indicated that the gaseous products in the main reaction stage showed more complex composition than those in the volatilization stage, and predominantly consisted of CO 2 , CO, methane, ethylene, other light alkanes and olefins, light aromatics, and hydrogen sulfide. Moreover, the release behaviors of typical gaseous products (CO 2 , CO, methane, ethylene, and light aromatics) for oil sand bitumen and its SARA fractions were different due to the different composition and structure. The thermal-cracking kinetic parameters of oil sand bitumen and its SARA fractions were determined using the iso-conversional Friedman procedure at heating rates of 10 to 800 K/min. The activation energy of oil sand bitumen ranging from 93.74 to 215.99 kJ/mol in the whole thermal cracking process fell in between that of aromatics and resins. The variation of activation energy with the conversion rate for oil sand bitumen during the thermal cracking process was influenced by the interaction between SARA fractions.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermal Cracking Characteristics and Kinetics of Oil Sand Bitumen and Its SARA Fractions by TG–FTIR

et al. 2017

View full text Add to dashboard Cite

show abstract

“…A number of preliminary studies using NMR spectroscopy to elucidate the chemical mechanisms in coal and oil shale pyrolysis have been reported. 22,33,34 NMR techniques were first used for the structural analysis of petroleum and coal tar by Brown and Ladner 23 and Williams; 24 Haley 25 and many other researchers 26−28 have used 1 H NMR spectroscopy and other physical techniques to obtain structural parameters. Liang and co-workers 29−31 used a combination of 1 H NMR spectroscopy, IR spectroscopy, molecular mass determination, and elemental composition analysis to study the structures of crude vacuum residues, using modified Brown−Ladner (B−L) equations.…”

Section: Introductionmentioning

confidence: 99%

“…Wilson et al 32 investigated the structures of the liquid products and residues from the pyrolysis of Rundle oil shale using various NMR spectroscopic techniques and clarified the chemical transformations that occur during oil shale pyrolysis. Wang et al 35 studied the influence of the final retorting temperature on the chemical structures of oils from oil sands, using 1 H NMR spectroscopy and elemental composition analysis, based on modified B−L equations.…”

Section: Introductionmentioning

confidence: 99%

“…Many countries are suffering from substantial energy shortages; therefore, it is imperative that attention be focused on new potential reserves of alternative energy supplies. Many possible sources (such as biomass) are available, but oil sands deposits offer a release from energy shortages. − Oil sands represent an abundant resource in the United States, Australia, China, Jordan, Morocco, Estonia, and Indonesia, and the largest deposit is in the Athabasca area in northern Alberta, Canada. Energy extraction from these resources is being intensively researched. − Oil sands, or tar sands, are composed of bitumen-impregnated sandstone.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

¹H NMR and ¹³C NMR Studies of Oil from Pyrolysis of Indonesian Oil Sands

Wang

Jia

Jianxin³

et al. 2016

Energy Fuels

View full text Add to dashboard Cite

In this study, 1 H NMR and quantitative 13 C NMR spectroscopies were used to investigate the chemical transformations of oil during the retorting process. Oil samples were obtained by the pyrolysis of Indonesian oil sands at various heating rates and final retorting temperatures. A modified Brown−Ladner method was used to determine the structural parameters of the samples. The results showed that the effects of the final retorting temperature on the chemical structures were significant, because decomposition and polymerization occurred during the retorting process. The chemical structure was also significantly affected by the heating rate, which influenced the degrees of distillation and pyrolysis. For comparison and accuracy, the equations proposed by Poveda and Molina (J. Pet. Sci. Eng. 2012, 84−85, 1−7) were also used to calculate the structural parameters, based on a combination of the 1 H and 13 C NMR spectra. The observed trends in the changes in the structural parameters were similar for the two methods.

show abstract

“…High temperature plays an important role in the pyrolysis of sand oil, thermogravimetric analysis (TGA) has been extensively used as a means to study the decomposition of oil sand [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis behavior of Indonesia oil sand by TG-FTIR and in a fixed bed reactor

Jia

Wang

Liu

et al. 2015

Journal of Analytical and Applied Pyrolysis

Self Cite

View full text Add to dashboard Cite

Pyrolysis and combustion model of oil sands from non-isothermal thermogravimetric analysis data

Cited by 25 publications

References 18 publications

Thermal Cracking Characteristics and Kinetics of Oil Sand Bitumen and Its SARA Fractions by TG–FTIR

Thermal Cracking Characteristics and Kinetics of Oil Sand Bitumen and Its SARA Fractions by TG–FTIR

¹H NMR and ¹³C NMR Studies of Oil from Pyrolysis of Indonesian Oil Sands

Pyrolysis behavior of Indonesia oil sand by TG-FTIR and in a fixed bed reactor

Contact Info

Product

Resources

About

Pyrolysis and combustion model of oil sands from non-isothermal thermogravimetric analysis data

Cited by 25 publications

References 18 publications

Thermal Cracking Characteristics and Kinetics of Oil Sand Bitumen and Its SARA Fractions by TG–FTIR

Thermal Cracking Characteristics and Kinetics of Oil Sand Bitumen and Its SARA Fractions by TG–FTIR

1H NMR and 13C NMR Studies of Oil from Pyrolysis of Indonesian Oil Sands

Pyrolysis behavior of Indonesia oil sand by TG-FTIR and in a fixed bed reactor

Contact Info

Product

Resources

About

¹H NMR and ¹³C NMR Studies of Oil from Pyrolysis of Indonesian Oil Sands