A comparison of fluidized bed pyrolysis of oil sand from Utah, USA, and Alberta, Canada

Characterization and thermal pyrolysis of oil sand was conducted. The experiment was performed on Circle Cliffs, Utah, U.S.A. and the results were compared with the data from Alberta, Canada. The reaction character identified by TGA was dual mode of vaporization of light hydrocarbon and thermal crac...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2017, 34(12), 213, pp.3125-3131
Main Authors: Shun, Dowon, Shin, Jong-Seon, Bae, Dal-Hee, Ryu, Ho-Jung, Park, Jaehyeok
Format: Article
Language:English
Subjects:
Biotechnology
Bitumens
Catalysis
Chemistry
Chemistry and Materials Science
Cliffs
Cracking (chemical engineering)
Energy
Experiments
Fluidized bed reactors
Fluidized beds
Heating
Hydrocarbons
Industrial Chemistry/Chemical Engineering
Maltenes
Materials Science
Natural gas
Process variables
Pyrolysis
Sand
Thermodynamic properties
Vaporization
화학공학
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Summary:Characterization and thermal pyrolysis of oil sand was conducted. The experiment was performed on Circle Cliffs, Utah, U.S.A. and the results were compared with the data from Alberta, Canada. The reaction character identified by TGA was dual mode of vaporization of light hydrocarbon and thermal cracking of high molecular hydrocarbon. The pyrolysis experiment was performed in a 2 kg/h capacity fluidized bed externally heated by electricity. The process variables investigated were a temperature range of 723-923 K, fluidization gas velocity of 1.5-2 times of the minimum fluidization velocity, solid retention time of 15-30 minutes, and average particle size of 435 microns. The results of TGA and elemental analysis of bitumen provided necessary information regarding maximum liquid yield from the pyrolysis prior to pyrolysis experiment. The oil yield was maximum at 823 K. The yield of liquid was not exceeding the weight percent of maltenes in original bitumen. The optimum reaction condition should be fast vaporization of light hydrocarbon and minimizing thermal cracking of high molecular hydrocarbon. To maximize the liquid yield, fast heating and vaporization of oil sand bitumen and then the rapid removal of the vaporized product from the heating zone is recommended, i.e., operation in a fluidized bed reactor.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-017-0233-8