Experimental Study of Oil Non-Condensable Gas Pyrolysis in a Stirred-Tank Reactor for Catalysis of Hydrogen and Hydrogen-Containing Mixtures Production

Oleg A. Kolenchukov, Kirill A. Bashmur, Vladimir V. Bukhtoyarov, Sergei O. Kurashkin (), Vadim S. Tynchenko (), Elena V. Tsygankova, Roman B. Sergienko and Vladislav V. Kukartsev
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Oleg A. Kolenchukov: Department of Technological Machines and Equipment of Oil and Gas Complex, School of Petroleum and Natural Gas Engineering, Siberian Federal University, 660041 Krasnoyarsk, Russia
Kirill A. Bashmur: Department of Technological Machines and Equipment of Oil and Gas Complex, School of Petroleum and Natural Gas Engineering, Siberian Federal University, 660041 Krasnoyarsk, Russia
Vladimir V. Bukhtoyarov: Department of Technological Machines and Equipment of Oil and Gas Complex, School of Petroleum and Natural Gas Engineering, Siberian Federal University, 660041 Krasnoyarsk, Russia
Sergei O. Kurashkin: Digital Material Science, New Materials and Technologies, Bauman Moscow State Technical University, 105005 Moscow, Russia
Vadim S. Tynchenko: Department of Technological Machines and Equipment of Oil and Gas Complex, School of Petroleum and Natural Gas Engineering, Siberian Federal University, 660041 Krasnoyarsk, Russia
Elena V. Tsygankova: Department of Foreign Languages for Natural Science, Siberian Federal University, 660041 Krasnoyarsk, Russia
Roman B. Sergienko: Machine Learning Department, Gini Gmbh, 80339 Munich, Germany
Vladislav V. Kukartsev: Digital Material Science, New Materials and Technologies, Bauman Moscow State Technical University, 105005 Moscow, Russia

Energies, 2022, vol. 15, issue 22, 1-16

Abstract: The present study is focused on improving the technology for deep oil sludge processing by pyrolysis methods, considered to be the most promising technology for their environmentally friendly utilization, in which a significant yield of fuel products is expected. The technology developed by the authors of this study is a two-stage process. The first stage, pyrolysis of oil sludge, was investigated in previous papers. A significant yield of non-condensable gases was obtained. This paper presents a study of the second stage of complex deep processing technology—pyrolysis of non-condensable gases (purified propane) using a stirrer with the help of the developed experimental setup. The expected benefit of using the stirrer is improved heat transfer due to circumferential and radial-axial circulation of the gas flow. The effect of a stirrer on the yield of final target decomposition products—H 2 -containing mixtures and H 2 generated during non-catalytic (medium-temperature) and catalytic pyrolysis of non-condensable gases obtained by pyrolysis of oil sludge are estimated. Ni catalyst was used for catalytic pyrolysis. The study shows that the application of the stirrer leads to increasing in H 2 -containing mixtures and H 2 concentrations. In particular, during the whole reaction time (10 h), the average H 2 concentration in pyrolysis gas during catalytic pyrolysis increased by ~5.3%. In this case, the optimum reaction time to produce H 2 was 4 h. The peak H 2 concentration in the pyrolysis gas at reaction temperature 590 ± 10 °C was: 66.5 vol. % with the stirrer versus 62 vol. % without the stirrer with an error of ±0.4 %. A further increase in reaction time is cost-effective in order to obtain H 2 -containing mixtures.

Keywords: stirred-tank reactor; hydrogen production; propane pyrolysis; industrial waste; non-condensable gases; oil sludge; waste-to-energy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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