Transformations of the Components of Heavy Petroleum Feedstock by Ozone

Лихтерова, Н. М.; Лунин, В. В.; Torkhovskii, V. N.; Fionov, A. V.; Kollin, Adzhinomo

doi:10.1023/b:cafo.0000041223.91179.af

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…The efficiency of processing raw materials with ozone to the depth of conversion of fuel oil under the conditions of its cracking process and the possibility of lowering the temperature to 425-450 °С are described [1,2,4,[58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75]]. In the literature, studies are known of the processes of cracking vacuum distillates on a zeolite-containing catalyst and the reforming of gasoline fractions on a modified catalyst in the presence of atmospheric oxygen.…”

Section: Introductionmentioning

confidence: 99%

“…These results, obtained by various authors, indicate the feasibility of processing heavy oil fractions by oxidative cracking. An analysis of the data of various scientific schools allows us to conclude that one of the most promising ways to increase the depth of processing of heavy oil fractions is to carry out catalytic cracking in an oxidizing medium, for example, with controlled air supply to the reactor [58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75].…”

Section: Introductionmentioning

confidence: 99%

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Catalytic cracking of M-100 fuel oil: relationships between origin process parameters and conversion products

et al. 2022

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The development of technologies for processing oil residues is relevant and promising for Kazakhstan, since the main oil reserves of hydrocarbons in the country are in heavy oils. This paper describes the study of the influence of technological modes on the yield and hydrocarbon composition of products formed because of cracking of commercial fuel oil and fuel oil M-100 in the presence of air in the reactor. For catalysts preparation, natural Taizhuzgen zeolite and Narynkol clay were used. It was found that the introduction of air into the reaction zone, in which oxygen is the initiator of the cracking process, significantly increases the yield of the middle distillate fractions. In the presence of air, the yield of diene and cyclodiene hydrocarbons significantly increases compared to cracking in an inert atmosphere. According to the data of IR spectral analysis of M-100 grade oil fractions, in addition to normal alkanes, the final sample contains a significant amount of olefinic and aromatic hydrocarbons. On the optimal catalyst, owing to oxidative cracking of fuel oil, the following product compositions (in %) were established: Fuel oil M-100: gas – 0.8, gasoline – 1.1, light gas oil – 85.7, heavy residue – 11.9, loss – 0.5 and total – 100.0%; commodity Fuel oil (M-100): gas – 3.3, gasoline – 8.4, light gas oil – 84.3, heavy residue – 4.0, loss – 0 and total – 100.0%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Catalytic cracking of M-100 fuel oil: relationships between origin process parameters and conversion products

et al. 2022

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“…14 However, the oil properties did not improve monotonously with the degree of ozonation. 15 Practically, investigating ozone (O 3 ) as oxidizing agent as opposed to oxygen (O 2 ) is complicated by the difficulty (and inadvisability as a safety precaution) of obtaining pure ozone. When ozone is generated from oxygen by a corona spark discharge, it is produced as a dilute mixture of ozone in oxygen, irrespective of whether pure oxygen or air is used as the feed.…”

Section: Introductionmentioning

confidence: 99%

“…Likewise, decreases in the aromatic content, sulfur content, nitrogen content, and average molecular mass were found after ozonation coupled with radiation and the thermal cracking of heavy oil from Kazakhstan . However, the oil properties did not improve monotonously with the degree of ozonation …”

Section: Introductionmentioning

confidence: 99%

Ozonation of Oilsands Bitumen

Hendessi

Klerk

2016

Energy Fuels

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The conversion of bitumen with ozone should in principle lead to oxidative degradation, as opposed to the increase in viscosity found during the reaction with oxygen because ozonation can lead to CC scission by ozonolysis. However, when bitumen was reacted with ozonated air at 140−160 °C, the viscosity increased compared to conversion with air under the same conditions. To explain these observations, the ozonation of model compounds of various hydrocarbon and heterocyclic compound classes was studied. The selectivity and nature of the oxidation products from ozonation were different from that of autoxidation. Ozonolysis that led to the ring opening of aromatics was observed. At low conversion (<10%), the addition product selectivity of the five-membered cyclic hydrocarbons, indane and indene, was less after reaction with ozonated air than with air. It appears that the observed increase in bitumen viscosity was due to the increased free radical addition product selectivity of heterocyclic compounds, which was higher after reaction with ozonated air than with air. It was also found that at higher conversion (>10%), the increase in oxidized material caused a dramatic increase in addition product selectivity during ozonation. A plausible reaction pathway for addition product formation was proposed on the basis of the Criegee mechanism. The nature of unique addition products from ozonation that were not observed after autoxidation could be explained in terms of the decomposition of the ozonide and recombination of the free radical fragments.

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“…В работе [16] было показано, что предварительная обработка озоном выделенных из нефти асфальтенов способствует высокой их конверсии. Также было обнаружено снижение содержания ароматических соединений и их средней молекулярной массы после озонирования в сочетании с радиацией [17] или термическим крекингом тяжелой нефти [18,19]. Известно, что озон активно взаимодействует с гетероорганическими соединениями сырья, это отражено в работах [20,21] О* -предварительно обработанного озоном…”

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The Effect of Pre-Ozonation of Natural Bitumen on the Rate of Cracking Reactions

Свириденко

Головко

2020

Journal of Siberian Federal University. Chemistry

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The effect of bitumen ozone-oxygen mixture pretreatment followed by cracking on thermolysis processes was investigated. Pretreatment of natural bitumen allowed to intensify the process of destruction of high-molecular components of raw materials, the content of which decreased by 8–15% wt. In the resulting liquid cracking products, oils predominate from 70 to 80% wt. Based on the formalized model of the thermal transformation of high-molecular components of the raw material, the rate constants of the bitumen thermolysis reactions (k) and the effect of pretreatment of the ozoneoxygen bitumen mixture on the cracking reactions are calculated

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Transformations of the Components of Heavy Petroleum Feedstock by Ozone

Cited by 6 publications

References 2 publications

Catalytic cracking of M-100 fuel oil: relationships between origin process parameters and conversion products

Catalytic cracking of M-100 fuel oil: relationships between origin process parameters and conversion products

Ozonation of Oilsands Bitumen

The Effect of Pre-Ozonation of Natural Bitumen on the Rate of Cracking Reactions

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