Catalytic cracking and reforming in the presence of atmospheric oxygen

Kolesnikov, S. L.; Zvyagin, V. O.; Kolesnikov, L. M.

doi:10.1007/bf02694144

Cited by 4 publications

(3 citation statements)

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“…One of the most promising methods for producing light hydrocarbon fractions is the implementation of catalytic cracking of heavy oil raw materials in the presence of air additives in the reaction medium, i. e. in an oxidizing medium. [16][17][18][19][20][21][22][23] In this work, the hollow microspheres based on fly ash from the Ekibastuz coal deposit (Kazakhstan), produced as a result of the operation of TPP-2 in Almaty (Kazakhstan) and natural Kazakhstan zeolite from Taizhuzgen field were selected and used for the preparation of catalysts. The research was carried out on the development of an effective way of purification of gas emissions from sulfur dioxide and also for oxidative catalytic cracking of fuel oil (with preliminary electromagnetic excitation of hydrocarbon molecules) to obtain light carbon fractions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Testing Catalysts Based on Fly Ash From Thermal Power Plants and Natural Zeolite for Gas Emissions Purification and Catalytic Processing of Heavy Oil

Shakiyeva¹,

Sassykova²,

Khamlenko³

et al. 2021

RJC

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In this study, hollow microspheres based on fly ash from the Ekibastuz coal field (Kazakhstan) and natural zeolite from the Taizhuzgen field (Kazakhstan) were used for the synthesis of catalysts. The catalysts were tested in the process of sulfur dioxide oxidation with different SO2 content in the SO2-Ar gas mixture at a flow vortex plant of the "Emulsifier" type with a capacity of 2 m 3 / h. Technology for the oxidation of SO2 with oxygen in an aqueous solution has been developed and the best technological parameters for the selective oxidation of SO2 with the production of sulfuric acid as a product have been determined. The degree of SO2 sorption is reached up to 95%. Also, the prepared catalysts were tested in the process of redox-catalytic cracking of fuel oil (with preliminary electromagnetic excitation of hydrocarbon molecules) to obtain light carbon fractions. The fuel oil of the Amangeldy Gas Processing Plant (AGPP, Kazakhstan) of the M-100 brand was studied as a feedstock. On the optimal catalyst in the products of oxidative cracking of fuel oil, the fraction of light gas oil makes up the main part. The resulting light gas oil contains a significant amount of alpha-olefins, which are scarce raw materials for the production of synthetic additives and oils.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Testing Catalysts Based on Fly Ash From Thermal Power Plants and Natural Zeolite for Gas Emissions Purification and Catalytic Processing of Heavy Oil

Shakiyeva¹,

Sassykova²,

Khamlenko³

et al. 2021

RJC

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“…9 (3), No. 20229301 ARTICLE 2 of 8 als with the catalyst and, finally, the use of heavy fractions to ensure the thermal balance of the installation [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49].…”

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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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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“…There are studies of this direction [1,2] in which the results of converting the low-octane, 85-180°C naphtha cut in an entrained-flow unit in a stationary bed of mechanical mixtures of catalysts. The mixtures consisted of zeolite-aluminosilicate, Al -Co -Mo -O and Al -Ni -Mo -O catalysts, and types ZVK-H and ZVM-H zeolites.…”

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confidence: 99%

Reforming of naphtha cut in a fluidized bed of catalysts

Колесников

Zuber

Svarovskaya

et al. 2008

Chem Technol Fuels Oils

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An important direction in the evolution of reforming of low-octane naphtha cuts is conducting the process without hydrogen at atmospheric or low pressure on metal-oxide catalysts. There are studies of this direction [1,2] in which the results of converting the low-octane, 85-180°C naphtha cut in an entrained-flow unit in a stationary bed of mechanical mixtures of catalysts. The mixtures consisted of zeolite-aluminosilicate, Al -Co -Mo -O and Al -Ni -Mo -O catalysts, and types ZVK-H and ZVM-H zeolites. Reformates with a motor octane number (MON) of 76-84 are obtained with these catalysts. The catalysts worked stably for 3 h. Their activity then smoothly diminished due to accumulation of coke deposits. At the same time, the selectivity in the yield of reformate increased by 10-15 wt. %.The coked catalyst mixture was regenerated in an air stream at 450-500°C for 3 h. The initial activity was fully restored as a result. We investigated reforming of the naphtha cut in the gas -solid system in a reactor with a fluidized bed of a mixture of powdered Z-10 and Al -Co -Mo -O catalysts for creating small units that operate without stopping for regeneration of coked catalyst. This will allow eliminating nonproductive expenditures of time for stopping and starting up the units and creating more favorable conditions for their operation and control. Hydrogenate from the hydrotreating unit at Moscow Oil Refinery Co. with the following physicochemical properties was used as the feedstock:

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Catalytic cracking and reforming in the presence of atmospheric oxygen

Cited by 4 publications

References 0 publications

Synthesis and Testing Catalysts Based on Fly Ash From Thermal Power Plants and Natural Zeolite for Gas Emissions Purification and Catalytic Processing of Heavy Oil

Synthesis and Testing Catalysts Based on Fly Ash From Thermal Power Plants and Natural Zeolite for Gas Emissions Purification and Catalytic Processing of Heavy Oil

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

Reforming of naphtha cut in a fluidized bed of catalysts

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