Influence of petroleum coking additive on the quality of coal batch, coke, and tar

Mel’nikov, I. I.; Kryachuk, V. M.; Mezin, D. A.; Горбунов, А. А.; Voloshchuk, T. G.

doi:10.3103/s1068364x11120118

Cited by 7 publications

(3 citation statements)

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“…A petroleum coking additive is a carbon bottom product of a delayed coking unit at petroleum refineries, which is obtained under a “softer” thermal regime (455–475 °C) than petroleum coke (495–505 °C). The distinctive properties of the petroleum coking additive are a high volatile-matter yield, from 15 to 25 wt % (relative to petroleum coke, usually up to 9–12 wt %). ,, In addition, the petroleum coking additive, in contrast to petroleum coke used as a raw material for the production of electrodes or anodes, does not have such strict restrictions on the sulfur content (up to 4.8 wt %). This makes it possible to consider low-grade sulfur and high-sulfur heavy oil residues from hydrocarbon processing as cheap feedstock for delayed coking units.…”

Section: Introductionmentioning

confidence: 99%

“…The lack of required valuable coal grades in the market at a favorable price makes the coke chemical companies look for an acceptable replacement. The coking additive produced from crude petroleum can be such a partial replacement in charge production. , …”

Section: Introductionmentioning

confidence: 99%

“…The coking additive produced from crude petroleum can be such a partial replacement in charge production. 14,27 2. EXPERIMENTAL SECTION 2.1.…”

Section: Introductionmentioning

confidence: 99%

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Technology of Producing Petroleum Coking Additives to Replace Coking Coal

et al. 2021

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Coke chemical companies often have a deficit of coals of particularly valuable grades, the coking coals. This work studies the opportunity of producing petroleum coking additives using delayed coking during heavy petroleum residue processing. Experiments for the production of a carbon material were conducted using three kinds of heavy petroleum residues of the oil refinery plant Ltd Kinef: the vacuum residue from crude atmospheric and vacuum distillation units (VR1), the vacuum residue from the vacuum distillation hydrocracking unit (VR2), and the visbreaker residue from the visbreaking unit (VR3). For the produced carbon material, the quality indicators were determined, and X-ray diffraction, thermogravimetric, and differential thermal analyses were conducted. The petroleum coking additive produced instead of the typical petroleum coke under a milder temperature regime had the required quality indicators, particularly, the volatile-matter yield within the range from 15 to 25 wt %, to be used in metallurgical production for partial replacement of coking coals in the charge to produce metallurgical coke.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Technology of Producing Petroleum Coking Additives to Replace Coking Coal

et al. 2021

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Electric dehydration of coal tar – a by-product of coke production for blast furnace smelting

Golovashov,

Alekseev,

Shvaleva

2024

jour

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The aim of the study was to adapt the technology of electric dehydration of oil for use with coal tar (a by-product of coke production for blast furnace smelting) in order to remove ash (tar decanter sludge) and water. The research focuses on coal tar generated in coke ovens, which forms a colloidal system with water and ash. The method of electric dehydration was employed in the study, which is currently used to remove water from the oil–water colloidal system. The construction of the 2-EG-160-2 electric dehydrator was examined, along with the specifics of introducing coal tar into it in comparison to oil. It was demonstrated that, under the proposed operational conditions for the electric dehydrator, the coal tar and tar decanter sludge would settle at the bottom of the unit due to their higher density than that of water (the density of coal tar is approximately 1200 kg/m3 and higher). A scheme for integrating the electric dehydrator into the de-ashing process at a coke-chemical plant was proposed. The process of separating coal tar in the electric dehydrator was calculated. The results demonstrated that the efficiency of the equipment in the dehydration of coal tar, in comparison to oil, is considerably lower due to its higher density and viscosity (approximately 40 times higher at 80°C). Consequently, the performance of the electric dehydrator for coal tar would be approximately 40,000 tons, as opposed to approximately 1 million tons for oil. Nevertheless, the aforementioned performance per electric dehydrator is sufficient to meet the dehydration needs of AO “Ural Steel” for coal tar. Therefore, it is recommended that the electric dehydrator be integrated into the general coal tar dehydration scheme in order to ensure that the required quality standards for the tar are met, allowing it to be used and sold as a target product.

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