Bitumen radiation processing

Zaykin, Yu.A.; Zaykina, R.F.

doi:10.1016/j.radphyschem.2004.04.076

Cited by 16 publications

(7 citation statements)

References 3 publications

(4 reference statements)

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“…33,34 This could be due to a combined effect of the higher dose rate and higher number density of irradiated compounds. 36,[42][43][44] The combination of a high dose rate and high number density creates ideal conditions for generating reactive species with high concentrations. Whether these species react with each other to produce desirable products depends on the irradiated compounds and specific chemistry associated with it.…”

Section: Product Yields and Costmentioning

confidence: 99%

Electric production of high-quality fuels via electron beam irradiation under ambient conditions

Wang

Staack

2022

Green Chem.

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Section: Product Yields and Costmentioning

confidence: 99%

Electric production of high-quality fuels via electron beam irradiation under ambient conditions

Wang

Staack

2022

Green Chem.

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“…n n (10) The free radicals generated in the initiation step (with either thermal or radiation origins) have the ability to propagate through a series of chain development reactions. Each active radical can serve as the starting point for hundreds or thousands of consecutive reactions.…”

Section: * → ̇+ ȧmentioning

confidence: 99%

“…Ionizing irradiation has been also used as a way to treat heavy petroleum samples. Zaykin and Zaykina 10 compared radiation thermal cracking of petroleum bitumen to the other processing methods such as thermal cracking, thermocatalytic cracking, and ozone thermal cracking. The irradiated samples provided a higher concentration of the light synthetic oil through a well controlled process.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Application of Heat and Electron Particles to Effectively Reduce the Viscosity of Heavy Deasphalted Petroleum Fluids

et al. 2013

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Application of ionizing incidents, as an innovative way of combining engineering physics and chemistry to efficiently deliver energy to the electronic structure of the molecules, has introduced great opportunities to the developing oil and gas industry. Although heavy petroleum resources have been considered as a potential alternative to fulfill the growing energy inquiries, the lack of cost-effective technologies for extraction, transportation, or refinery upgrading hinders the development of heavy oil reserves. Nevertheless, electron irradiation technology can economically overcome principal problems of heavy oil processing arising from the heavy oil's unfavorable physical and chemical properties. This technology promises to increase the yields of valuable and environmentally satisfying products in thermal cracking. Electron particles were observed to reduce the viscosity of heavy deasphalted petroleum fluid and to provide a higher concentration of light hydrocarbons in the final product. This behavior is attributed to the intensified cracking in the presence of ionizing electrons. Molecular distribution of the hydrocarbons in liquid and gas products shows that although simultaneous application of heat and electron particles accelerates the cracking process, the reaction mechanism does not differ from that of thermal cracking. The results also demonstrate the substantial influence of reaction temperature and absorbed dose upon the radiolysis throughput. Moreover, aging analyses of the post-treatment samples proves the time-stable nature of the irradiation products.

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“…Conventional methods for recovering light hydrocarbons from heavy oil are thermal cracking, hydrocracking, and catalytic cracking. − In all of these methods, however, a carbonaceous residue is formed both in the reactor and on the catalysts. It has also been reported that heavy metals such as vanadium and nickel contained in the heavy oil can deactivate catalysts .…”

Section: Introductionmentioning

confidence: 99%

Production of Lighter Fuels by Cracking Petroleum Residual Oils with Steam over Zirconia-Supporting Iron Oxide Catalysts

2005

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Zirconia-supporting iron oxide catalysts were developed for recovery of lighter fuels in a steam atmosphere from residual oils in petroleum refinery processes. In these processes, steam is first decomposed on zirconia, yielding active hydrogen and oxygen species. These oxygen species spill over to the surface of iron oxide and react with heavy oil molecules, producing lighter molecules and carbon dioxide. The remaining active hydrogen species are then added to the lighter molecules. This reaction therefore proceeds by oxidative degradation. It was found in the present study that the catalysts exhibited catalytic activity to decompose the residual oil without any carbonaceous residue. The catalysts were, however, deactivated when the sequence of reaction and regeneration was repeated, which is attributed to a change in the iron oxide, namely, between hematite and magnetite, and subsequent peeling of zirconia from the catalyst. To avoid this phase change, Al 2 O 3 was added to the iron oxide lattice. The second-order reaction rate constant of this catalyst was almost the same value 0.16 as 0.18 of the catalyst without Al 2 O 3 and increased to 0.22 after the third sequence of the reaction and regeneration, where the rate constant of the catalyst without Al 2 O 3 decreased to 0.11.

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Bitumen radiation processing

Cited by 16 publications

References 3 publications

Electric production of high-quality fuels via electron beam irradiation under ambient conditions

Electric production of high-quality fuels via electron beam irradiation under ambient conditions

Simultaneous Application of Heat and Electron Particles to Effectively Reduce the Viscosity of Heavy Deasphalted Petroleum Fluids

Production of Lighter Fuels by Cracking Petroleum Residual Oils with Steam over Zirconia-Supporting Iron Oxide Catalysts

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