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  • Spectral Classification of Lignite
    Coke Chem. Pub Date : 2020-09-23
    V. I. Butakova, A. I. Kirillova, V. K. Popov

    Abstract—Lignite is classified in terms of its diffuse reflectance IR spectrum, by soft independent modeling of class analogy (SIMCA).

    更新日期:2020-09-24
  • Influence of Fresh Oil on the Performance of Circulating Absorbent Oil in Benzene Processing
    Coke Chem. Pub Date : 2020-09-23
    S. V. Fatenko

    Abstract—In changing the composition of coking batch, it is expedient also to ensure effective operation of the benzene department, both in terms of the production of commercial phenolic hydrocarbons and in order to maintain normal operation of the coke batteries’ heating system. In assessing the fresh absorbent oil used to replenish the circulating oil, not only its operational characteristics must

    更新日期:2020-09-24
  • Improving the Dry Quenching of Coke
    Coke Chem. Pub Date : 2020-09-23
    R. R. Gilyazetdinov, K. V. Slepov, I. Yu. Sukhov

    Abstract—Means of more efficient dry quenching of coke are considered. The interaction of the coke with the circulating gas is described. The influence of this interaction on the quality of coke and its losses is studied. The refitting of the dry-quenching system at AO EVRAZ NTMK is outlined.

    更新日期:2020-09-24
  • Innovations in World Cokemaking Technologies: A Report on the ESTAD 2019 Steel Conference
    Coke Chem. Pub Date : 2020-09-23
    V. I. Rudyka, S. A. Kravchenko, M. A. Solovjov, V. P. Malyna

    Abstract—New developments in coke production are reviewed on the basis of papers presented at ESTAD 2019. Examples of new designs for coke batteries and ancillary equipment are presented, noting improvements in performance.

    更新日期:2020-09-24
  • Change in Properties of Roadmaking Bitumen on Oxidation
    Coke Chem. Pub Date : 2020-09-23
    V. V. Vasilyev, E. V. Salamatova, N. V. Maidanova, M. V. Kalinin, V. M. Strakhov

    Abstract—IR spectroscopy is used to assess the ease and depth of oxidation of roadmaking bitumen on the basis of the relative integral optical density of the carbonyl group’s absorption band during RTFOT and PAV tests. For different samples, the ease of short-term oxidation (the short-term oxidizability) of bitumen differs by an order of magnitude, while the difference in the long-term oxidizability

    更新日期:2020-09-24
  • Better Use of Enriched UK Mezhegeyugol Coal in Coking Batch
    Coke Chem. Pub Date : 2020-09-23
    Yu. A. Zolotukhin, N. S. Andreychikov, N. A. Berkutov, S. N. Kupriyanova

    Abstract—Industrial coking data from Kuznetsk and Raspadsk concentrates consisting of coal from OOO UK Mezhegeyugol are analyzed to determine the strength M25 and M10 and the ratio CSR/CRI for the coke produced from such batch at AO EVRAZ NTMK. Preliminary limits are established on the optimal content of UK Mezhegeyugol coal in the coking batch. On the basis of industrial experiments, the optimal batch

    更新日期:2020-09-24
  • Effect of Microlithotype Maceral Distribution on Coke Quality
    Coke Chem. Pub Date : 2020-09-23
    B. Ghosh, B. K. Sahoo, P. K. Jha, K. K. Manjhi, J. N. Sahu, A. K. Varma

    Abstract— The coking behavior of coal is an important facet in utilization of coal in metallurgy and in other industries. The carbonization behavior of coal mainly depends on coal rank, petrographic composition, ultimate composition and rheology of coal. Coal petrography has become very useful technique for establishment between formulation of coal blend composition and coke quality prediction. It

    更新日期:2020-09-24
  • Coke Quality and the Prospects for Coking with Proprietary Coal Concentrates at AO EVRAZ NTMK
    Coke Chem. Pub Date : 2020-09-23
    N. A. Berkutov, A. V. Rozhnev, V. N. Kruglov, S. N. Kupriyanov, A. V. Savchenko, O. E. Mikheeva

    Abstract—The main suppliers of coal for coke production at AO EVRAZ NTMK are considered, along with the technological value of each concentrate in systems with wet and dry quenching. Alternative suppliers may be identified by ranking the concentrates. Laboratory and industrial coking reveals the influence of the coal concentrates on the quality of metallurgical coke. On that basis, their ideal content

    更新日期:2020-09-24
  • Determining the Vitrinite Reflectance of Coal from Its Fuel Ratio
    Coke Chem. Pub Date : 2020-08-30
    N. I. Fedorova; Z. R. Ismagilov

    AbstractThe use of an empirical equation to calculate the vitrinite reflectance of coal from the fuel ratio Fr is considered. The fuel ratio is based on the fixed coal content (Cfixed = 100 – Ad – Vd) and the yield of volatiles (Vd). We investigate ten samples of bituminous coking coal (Zh coal) used as the clinkering component in the coking batch. Technical and elemental analysis indicates that the

    更新日期:2020-08-30
  • Refining of Coal Tar by Hydrogenation in the Presence of Nanoheterogeneous Nickel Sulfide Catalyst
    Coke Chem. Pub Date : 2020-08-30
    A. S. Maloletnev; Zh. K. Kairbekov; N. T. Smagulova

    AbstractThe refining of coal tar by hydrogenation is considered. In this process, nanoheterogeneous Ni-based catalysts may expediently be produced in situ from precursors in the reaction medium. The yield of needle coke in complete coal processing with recirculation of the residue at the coking stage is found to be 50–55%. That is 1.5 times the industrial yield in the coking of pitch.

    更新日期:2020-08-30
  • Decreasing the NO x Emissions at Coke Plants
    Coke Chem. Pub Date : 2020-08-30
    V. I. Rudyka; S. A. Kravchenko; S. J. Abdullin; S. J. Stelmachenko; O. I. Makei

    AbstractVarious approaches to decreasing toxic emissions of nitrogen oxides at coke plants are described: stepwise air supply; recirculation of smokestack gases; and selective catalytic and noncatalytic reduction of the nitrogen oxides.

    更新日期:2020-08-30
  • Assessment of the Likelihood of Underground Coal Oxidation and Self-Ignition: A Review
    Coke Chem. Pub Date : 2020-08-30
    S. A. Semenova; Yu. F. Patrakov; A. E. Majorov

    AbstractStandard and alternative methods of assessing the likelihood of coal oxidation and self-ignition in the bed are analyzed. These methods are based on the change in the petrographic, physicomechanical, chemical, and thermal properties of the coal on oxidation. Most of the methods are unsuitable for identification of the initial stage of coal oxidation. The onset of self-heating may be better

    更新日期:2020-08-30
  • Improving the Flotation of Fine Coal Slurries
    Coke Chem. Pub Date : 2020-08-30
    V. N. Petukhov; N. Yu. Svechnikova; O. V. Kuklina; S. V. Yudina

    AbstractThe properties of fine coal slurries at OOO MMK-Ugol and their flotation are studied. To improve the flotation of finely disperse coal slurries, more effective reagent combinations are employed; TPA collection agent and Sinterol flocculant are considered. In the laboratory, optimal flotation conditions are developed for fine coal slurries. In these conditions, coal enrichment is more efficient

    更新日期:2020-08-30
  • Structural Comparison of Metallurgical Coke and Coke Used in Electric Furnaces for Alloy Production
    Coke Chem. Pub Date : 2020-08-30
    G. A. Ulyeva

    AbstractThe microstructure of solid carbon-based reducing agents is assessed by electron microscopy. On the basis of the results, the mean size of pores, cracks, and pore walls in the reducing agents is determined. The structure formation of the special cokes is analyzed in relation to the raw materials and production technology employed. On that basis, their suitability for metal and alloy production

    更新日期:2020-08-30
  • Properties of Coal of Moderate Metamorphic Development
    Coke Chem. Pub Date : 2020-07-27
    E. N. Kozyreva

    AbstractThe physicochemical properties of Kuznetsk Basin coal are studied. The following distinctive features are confirmed for coal of moderate metamorphic development: minimum strength and gas-dynamic potential; and maximum risk of cracking and explosion, as well as maximum instability of the coal–methane system. For bed samples of different rank, we find that the petrographic characteristics of

    更新日期:2020-07-27
  • Coking Products from Shale
    Coke Chem. Pub Date : 2020-07-27
    A. S. Lavrova; V. V. Vasilyev; N. N. Ostroukhov; N. I. Petrovich; V. M. Strakhov; V. A. Itskovich

    AbstractThe composition of distillates from shale resins produced by the semicoking of kukersite shale in a Kiviter gas generator is investigated by chromatography and mass spectrometry. It is enlightening to compare the coking products from the complete shale resins, light fuel-oil distillate, heavy fuel-oil distillate, and shale phenol fractions. The shale coke samples are investigated by electron

    更新日期:2020-07-27
  • Replacement of Graphite by Petroleum Coke in Rail Lubricants
    Coke Chem. Pub Date : 2020-07-27
    V. E. Gozbenko; N. A. Korchevin; S. K. Kargapoltsev; V. M. Strakhov; A. I. Karlina; Yu. I. Karlina

    AbstractThe replacement of graphite by petroleum coke in lubricants for railroad lines is considered. The lubricant consists of petroleum coke, spent diesel oil, and low-molecular polyethylene. On mixing, these components form a system that is stable on storage. The particle size of the petroleum coke is selected so as to minimize wear of the metal. The hydrocarbons employed are biodegradable; that

    更新日期:2020-07-27
  • Evaluation of the Physical-Chemical Properties and Thermal Treatment of Coking
    Coke Chem. Pub Date : 2020-07-27
    K. El Korchi; R. Alami; A. Chaouch

    AbstractCoking is obtained from the Moroccan refinery, which has mainly experienced a serious problem of the coking formation inside packed beds columns. The calcined petroleum coke properties need to meet the specifications for aluminum anode-grade coke. The aim of the present paper is to evaluate the physical-chemical characteristics of coking formed inside petrochemical distillation columns before

    更新日期:2020-07-27
  • Coke Oven for Tests of Loose and Tamped Coal Batch
    Coke Chem. Pub Date : 2020-07-27
    S. A. Kravchenko; S. J. Abdullin; O. G. Kolesnykov

    AbstractThe influence of the composition and preparation of the coal batch on the expansion pressure is a neglected aspect of coke production. A research coke oven is proposed for establishing the optimal composition of tamped and loose batch and determining the expansion pressure. This coke oven yields values of the expansion pressure for both loose batch and tamped batch.

    更新日期:2020-07-27
  • Sorptional Equilibrium of Gas-Bearing Coal in Sealed Vessels: Thermal Processes
    Coke Chem. Pub Date : 2020-07-27
    G. Ya. Polevshchikov; E. N. Kozyreva; V. A. Bobin

    AbstractThermodynamic processes in a closed volume filled with gas-bearing Zh coal are investigated. Experiments are conducted with bed samples in a sealed vessel, which is equipped with a pressure sensor and four temperature sensors. The temperature variation in the vessel is found to be oscillatory. This may be attributed to heat transfer between layers with different granulometric composition and

    更新日期:2020-07-27
  • Hydraulic Analysis of Coke Ovens
    Coke Chem. Pub Date : 2020-07-27
    D. G. Zublev; V. D. Barsky

    AbstractCorrect hydraulic parameters are required for safe long-term operation of coke batteries. Maintaining positive pressure in the ovens throughout coking preserves the lining of the coke oven, because air leakage into the chamber is prevented. The chronological development of concepts regarding coke-oven hydrodynamics is reviewed and, on that basis, low pressure in the coke ovens is shown to appear

    更新日期:2020-07-27
  • Calorific Value of Coke 5. Quenching Method
    Coke Chem. Pub Date : 2020-07-27
    I. V. Miroshnichenko; D. V. Miroshnichenko; I. V. Shulga; Y. S. Balaeva

    AbstractThe maximum gross calorific value of coke corresponds to the >25 mm size class and the minimum value to the <10 mm class, regardless of the quenching method. Dry quenching increases both the gross and net calorific value of the coke in comparison with wet quenching. If the content of gas-group coal in the batch is decreased, the gross calorific value of the coke is increased. For dry quenched

    更新日期:2020-07-27
  • Adjusting the Primary Cooling of Coke-Oven Gas for Batch with Elevated Gas-Coal Content
    Coke Chem. Pub Date : 2020-07-27
    S. V. Fatenko; S. Y. Faenko; L. P. Bannikov; S. V. Nesterenko; D. V. Miroshnichenko

    AbstractIndustrial experiments show that it is expedient to treat the recirculation loop in primary gas-cooling units with a corrosion and scale inhibitor based on zinc, phosphonate, and polymer dispersants, so as to eliminate salt deposits on the equipment surfaces and to prevent the solution of the heat-transfer surfaces. The effectiveness of such treatment is confirmed by calculating the quantity

    更新日期:2020-07-27
  • Computer-Aided Design of Optimally Organized Systems in the Chemical Industry
    Coke Chem. Pub Date : 2020-07-27
    V. A. Naletov; M. B. Glebov

    AbstractA new approach is proposed to the computer-aided design of optimally organized systems in chemical production. This approach is based on information theory, which is an applied aspect of general systems theory. A general methodology for the creation of complex technological objects is employed, in accordance with Roullier’s evolutionary law of increasing system complexity (system organization)

    更新日期:2020-07-27
  • Erratum to: FTIR and Raman Spectroscopy Characterization of Coking Coals with Diverse Coalification
    Coke Chem. Pub Date : 2020-07-07
    Shao-Jing Yang, Qing Hai Pang, Tai-Xu Xu, Zhi-Jun He, Teng-Fei Song, Jun-Hong Zhang

    erratum

    更新日期:2020-07-07
  • New Technical Solutions for the Automation of Technological Processes of Coke Oven Plant Facilities
    Coke Chem. Pub Date : 2020-07-07
    K. G. Lavrov; B. I. Beshenchev; D. A. Kharlov; M. A. Gorenbukh; K. V. Osipovych; A. S. Tsikhotsky

    Abstract—Designs are proposed for use in the automatic quenching of coke hot spots on conveyers and in automatic loading of fine coke in railroad cars.

    更新日期:2020-07-07
  • Sorption of Metal Cations by Lignite and Humic Acids
    Coke Chem. Pub Date : 2020-07-07
    S. I. Zherebtsov; N. V. Malyshenko; K. S. Votolin; Z. R. Ismagilov

    Abstract—The possibility of using readily available materials—Tyul’gansk lignite, Tisul’sk lignite (and its naturally oxidized form), humic acids, and coal residues after humic-acid extraction—in the sorption of copper, cobalt, manganese, and zinc cations from aqueous solutions is considered. Their effectiveness as sorbents is assessed by means of IR Fourier spectroscopy, ESR, Raman scattering, and

    更新日期:2020-07-07
  • Calorific Value of Coke. 4. Size Distribution
    Coke Chem. Pub Date : 2020-07-07
    I. V. Miroshnichenko; D. V. Miroshnichenko; I. V. Shulga; Y. S. Balaeva; A. V. Tsygankov

    Abstract—The gross calorific value of wet-quenched blast-furnace coke fluctuates significantly as a function of the piece size. It is greatest for the <25 mm size class: 33.0 MJ/kg or more. The degree of conditioning of the coke, assessed in terms of the volatile matter and its actual density, has considerable influence on the gross calorific value. The less conditioned blast-furnace coke obtained

    更新日期:2020-07-07
  • Ash Composition in the Combustion of Promising Slurry Fuels
    Coke Chem. Pub Date : 2020-07-07
    G. S. Nyashina; M. A. Kurgankina; M. R. Akhmetshin; V. V. Medvedev

    Abstract—Of all the traditional energy sources (coal, natural gas, fuel oil, and petroleum), coal has the greatest environmental impact. Coal combustion at thermal power plants produces copious atmospheric emissions, as well as ash and slag. The discovery of new fuels is a high priority at present. One possibility is the use of industrial wastes. Composite liquid fuels could permit the use of coal-mining

    更新日期:2020-07-07
  • Packing Density of Coal in Open Storage at AO Ural Steel
    Coke Chem. Pub Date : 2020-07-07
    A. Ya. Eremin; M. V. Zorin; S. P. Zubov; S. G. Tober; E. V. Selin; E. A. Gribanov

    Abstract—A method of determining the packing density of coal concentrates in open storage is proposed and tested at AO Ural Steel. The variation in packing density over the height and length of the coal stack is determined. A protocol is developed for determining the packing density of coal concentrates in open storage.

    更新日期:2020-07-07
  • Maximizing Benzene Extraction in Coke Production by Automatic Control
    Coke Chem. Pub Date : 2020-07-07
    B. N. Parsunkin; S. M. Andreev; A. R. Bondareva; I. I. Vasilev

    Abstract—It is established that optimizing extremal control of benzene distillation is expedient so as to maximize its extraction from absorbing oil. An effective method is described for finding the maximum possible benzene extraction, with appropriate regulation of the steam supply to the distillation column so as to permit dynamic temperature control. Simulation of the search process verifies the

    更新日期:2020-07-07
  • Influence of Cu(NO 3 ) 2 Activator and Gas Composition on the Thermal Decomposition of Coal and Lignite
    Coke Chem. Pub Date : 2020-07-07
    K. B. Larionov; I. V. Mishakov; K. V. Slyusarskiy; S. V. Lavrinenko; A. A. Gromov; A. A. Vedyagin

    AbstractThe thermal transformation of coal and lignite in the presence of Cu(NO3)2 activator (5 wt %) is investigated as a function of the atmospheric composition. The copper nitrate is supported on to the samples by the incipient wetness with Cu(NO3)2 solution in water and alcohol. The effect of the activator is studied as a function of the gas (air/argon) composition, by thermogravimetric analysis

    更新日期:2020-07-07
  • Tests of Sinterol Reagent in Flotation at OOO MMK-Ugol
    Coke Chem. Pub Date : 2020-07-07
    V. N. Petukhov; A. N. Smirnov; N. Yu. Svechnikova; A. P. Shulga; V. G. Dundukov

    AbstractThe flotation conditions for coal with different mineral content of the organic component are studied in the laboratory. The reagent protocol developed, which includes Sinterol modifier, is industrially tested. The results indicate that, if Sinterol is added at a rate of (1.0–3.0) ×10–3 kg/t of coal fines, the extraction of the coal’s combustible mass in the concentrate is increased; the process

    更新日期:2020-07-07
  • Express Method of Determining the Softening Point of Petroleum Pitch
    Coke Chem. Pub Date : 2020-06-03
    P. V. Kugatov; A. E. Raznoushkin; B. S. Zhirnov; A. E. Eremenko; D. S. Dryndina

    AbstractA capillary method is proposed for determining the softening point of petroleum pitch. A pitch sample is heated in a glass capillary by an air flux and observed under a microscope. The softening point is measured at the instant when the pitch within the capillary shrinks and pulls away from the glass walls. The method is tested for two series of petroleum pitch samples: one is derived from

    更新日期:2020-06-03
  • Influence of Gas Microbubbles on the Wettability of Coal Surfaces
    Coke Chem. Pub Date : 2020-06-03
    Yu. F. Patrakov; S. A. Semenova; T. A. Papina

    AbstractUsing low-ash OS coal as a model, a method is developed for creating a hydrophobic coal surface by means of microbubbles in a gas–liquid suspension. Air microbubbles are generated by decompression. The influence of the pressure in the gas saturation of water on the size and stability of the microbubbles is established. It is shown that, in the presence of microbubbles, a hydrophobic air layer

    更新日期:2020-06-03
  • Granulation of Coal Pitch at OAO Altai-Koks
    Coke Chem. Pub Date : 2020-06-03
    M. A. Solov’ev; N. Yu. Chebotarev; E. I. Kudryavtsev; N. I. Manekina; A. V. Obyshchak

    AbstractThe construction and operation of granulation systems for coal pitch at OAO Altai-Koks is considered. Such systems improve the storage and transportation of coal pitch.

    更新日期:2020-06-03
  • X-Ray Structural Analysis of Vitrinites in Coal at Different Metamorphic Stages
    Coke Chem. Pub Date : 2020-06-03
    A. N. Popova; N. I. Fedorova; Z. R. Ismagilov

    AbstractBy X-ray structural analysis, the following structural parameters of vitrinite concentrates from coal of different metamorphic stages are determined: the number of carbon atoms in each lamella (nC), the width of the lamellas (La), their stacking height (Lc), the number of polyaromatic layers in each stack (N), and the packing density of the lamellas (ρ). Later metamorphic stages are associated

    更新日期:2020-06-03
  • Production of Lithium Hydroxide and Lithium Carbonate from Spent Lithium Batteries
    Coke Chem. Pub Date : 2020-06-03
    V. I. Nazarov; A. M. Gonopolsky; D. A. Makarenkov; M. I. Klyushenkova; A. P. Popov

    AbstractA disposal technology for lithium batteries with minimal environmental impact is proposed. Ground battery components are processed in five stages, to produce mechanically activated powder. Attention focuses on two stages: leaching; and purification and concentration of the lithium hydroxide and carbonate in a high-pressure membrane unit. Theoretical principles are outlined for mechanical–chemical

    更新日期:2020-06-03
  • Corrosion Resistance of New Duplex Stainless Steels in Coke Production
    Coke Chem. Pub Date : 2020-06-03
    S. V. Nesterenko

    AbstractThe corrosion resistance of SAF 2507 duplex stainless steel and 254 SMO superaustenitic steel is studied in aggressive sulfuric-acid solutions (mother liquor) from sulfate departments; in aggressive media from arsenic–soda desulfurization; and in coke-shop media (from the quenching car and quenching tower). Gravimetric tests are conducted in accordance with State Standard GOST 9.908–85. The

    更新日期:2020-06-03
  • Effects of Different Experimental Conditions on the Micropore Characteristics of Coal
    Coke Chem. Pub Date : 2020-06-03
    Huan Cheng; Yinghua Liang; Yijun Zeng; Shiyong Chao; Yi Gu; Dewen Kong

    AbstractLow-temperature nitrogen adsorption experiment is widely used to analysis the micropore characteristics of coal. Effects of different experimental conditions including degassing time, degassing temperature, sample weight and sample particle size on the micropore characteristics of a middle rank coking coal produced in Shanxi Province, China was investigated to confirm the optimum experimental

    更新日期:2020-06-03
  • Applications of Gas Coal: A Review
    Coke Chem. Pub Date : 2020-06-03
    S. V. Fatenko; D. V. Miroshnichenko; I. V. Shulga

    AbstractAs in most countries, the applications of coal in Ukraine do not match its availability: the reserves consist mainly of coal of poor metamorphic development, which is in limited demand. The use of gas coal in coke production is largely associated with new coal-preparation and coking technologies: in particular, molded coke, heat treatment, and stamp charging. Gas coal is preferred for gasification

    更新日期:2020-06-03
  • Microbubble Modification of Coal Surfaces before Flotation
    Coke Chem. Pub Date : 2020-04-27
    Yu. F. Patrakov; S. A. Semenova; Yu. A. Kharlampenkova

    AbstractThe flotation of coking coal after treatment of the coal pulp by microbubbles is investigated. Differential granulometric analysis indicates that, when using air microbubbles, the flotation of small coal particles (<50 μm) predominates. The effectiveness of flotation of small coal fractions (<0.1 mm) by microbubbles, without reagent, is comparable with that attained when using traditional apolar

    更新日期:2020-04-27
  • Gas Liberation in the High-Temperature Isothermal Holding of Coke Residues
    Coke Chem. Pub Date : 2020-04-27
    S. G. Stakheev; A. Ya. Eremin; E. G. Zolotareva

    AbstractThe dynamics of nitrogen, hydrogen, and carbon-monoxide liberation in the isothermal holding of coke residues from G, Zh, KO, KS, and T coal at 1000°C is studied in experiments after heating at 10°C/min. The gas liberation in isothermal holding continues throughout the experiment (2 h). The rate of gas liberation declines exponentially in the course of holding. The rates of H2 and CO emission

    更新日期:2020-04-27
  • Prediction and Control of Coke Plant Wastewater Quality using Machine Learning Techniques
    Coke Chem. Pub Date : 2020-04-27
    Himanshu Khandelwal; Shweta Shrivastava; Adity Ganguly; Abhijit Roy

    AbstractThe present study focuses on examining the fate of coal constituents—carbon, sulphur, nitrogen and chlorine from coal blend to coke oven wastewater. Further, the impact of coal constituents and coke making process on wastewater quality has studied and analyzed the effects with plant data. Understanding helps in development of coke oven wastewater quality prediction model using machine learning

    更新日期:2020-04-27
  • Change in Molecular Mass of Pitch on Thermodestructive Polycondensation of Heavy Pyrolysis Tar
    Coke Chem. Pub Date : 2020-04-27
    A. A. Mukhamedzianova; I. A. Ikhsanov; N. Yu. Beilina

    AbstractBy determining the molecular mass of pitch from heavy pirolysis tar, additional information may be obtained regarding the thermal polycondensation and quality of pitch. The weighted mean molecular mass of toluene-soluble components of the pirolysis pitch is determined by gel-permeation chromatography. The molecular mass of the components in specific petroleum-pitch fractions is studied as a

    更新日期:2020-04-27
  • Quality and Utility of Shubarkol Shale from Kazakhstan
    Coke Chem. Pub Date : 2020-04-27
    V. M. Strakhov

    AbstractThe quality of Shubarkol carbonaceous shale from Kazakhstan is studied by state-of-the-art methods, with particular attention to its composition, its mineral composition, and its chemical, petrographic, physicochemical, and thermomechanical properties. According to one industrial classification, the shale is of humic–sapropelic type in genetic terms; it consists primarily of sorbomixtinite

    更新日期:2020-04-27
  • An Informational Systems Approach to Optimal Organization of Complex Technological Processes
    Coke Chem. Pub Date : 2020-04-27
    V. A. Naletov; M. B. Glebov

    AbstractThe basic principles of an information-based systems approach to optimal organization of complex industrial processes with a hierarchical structure are outlined, for the example of systems in chemical technology. General laws of the development of living things can be employed. In particular, Roullier’s evolutionary law of growing system complexity in the organization of organisms is applied

    更新日期:2020-04-27
  • Composition and Structure of Hexane-Insoluble Asphaltenes from Coal Pitch
    Coke Chem. Pub Date : 2020-04-27
    S. A. Sozinov; L. V. Sotnikova; A. N. Popova; L. M. Hitsova; S. Yu. Lyrschikov; O. S. Efimova; V. Yu. Malysheva; D. M. Rusakov

    AbstractThe functional-group composition and structure of hexane-insoluble asphaltenes from coal pitch are studied. The methods employed are chemical (elemental) analysis, nuclear magnetic resonance (NMR), IR spectroscopy, scanning electron microscopy, X-ray phase analysis, and differential thermal analysis in combination with chromatography and mass spectrometry. Analysis of the results shows that

    更新日期:2020-04-27
  • Production of Isotropic Coal from Shale-Waste Oil
    Coke Chem. Pub Date : 2020-04-09
    A. L. Abaturov; I. V. Moskalev; D. M. Kiselkov; V. N. Strelnikov

    Abstract—Isotropic coke is needed for the production of fine-grain graphite, which is employed throughout industry. In turn, isotropic coke may be produced from the residues obtained in atmospheric distillation of shale tar, after their thermal oxidation. The formation of isotropic coke by the carbonization of such thermally oxidized residues was considered in [1–3]. In the present work, the production

    更新日期:2020-04-09
  • Structural Aspects of the Coalification of Organic Materials
    Coke Chem. Pub Date : 2020-04-09
    A. A. Dmitrienko; E. R. Isayeva

    Abstract—Coal beds and coal sheets in oil fields consist of coalified material, with similarities and differences due to the conditions in which it was formed. Coal petrography is widely used to assess the properties of coal, and IR spectroscopy is being actively introduced. In tests, the vitrinite reflection coefficient and maceral composition are measured by microscopy and IR spectroscopy for core

    更新日期:2020-04-09
  • Study on NO x Emission Reduction in Coke Combustion and Sintering Process
    Coke Chem. Pub Date : 2020-04-09
    Song Han; Lin Dong; Zhiping Lei; Aiming Ke; Con Shi; Jing Chong Yan; Zhanku Li; Shigang Kang; Hengfu Shui; Zhicai Wang; Shibiao Ren; Chunxiu Pan

    AbstractThe NOx in the exhaust gas emitted from the coke combustion and sintering process has a serious impact on the environment. How to reduce the release of NOx in the combustion of coke has become a major problem to be solved. Adding a certain amount of catalyst to the coke combustion process can not only effectively improve the combustion efficiency of coke but also reduce the NOx emissions. In

    更新日期:2020-04-09
  • Action of Water Vapor in the High-Temperature Hydrogenation of a Mixture of Coke-Plant Benzene and the Naphthalene Fraction of Coal Tar
    Coke Chem. Pub Date : 2020-04-09
    Zh. K. Kairbekov; N. T. Smagulova; A. S. Maloletnev

    Abstract—In the catalytic high-temperature hydrogenation (hydrodealkylation) of a mixture of raw coke-plant benzene and the 180–230°C naphthalene fraction of coal tar, water vapor (steam) acts in two ways: it blocks the smallest pores in the catalyst, from which the removal of products is difficult; and it facilitates their desorption from the large pores, thereby decreasing the likelihood of polymerization

    更新日期:2020-04-09
  • Calorific Value of Coke. 3. Influence of Coal Storage
    Coke Chem. Pub Date : 2020-04-09
    I. V. Miroshnichenko; D. V. Miroshnichenko; I. V. Shulga; Y. S. Balaeva

    Abstract—The possibility of increasing the calorific value of coke from oxidized coal is established experimentally and confirmed theoretically. This entails the use of measures already developed for the rational use of oxidized coal in coking—in particular, with a view to ensuring the required coke quality. The influence of the elemental composition, actual and apparent density, porosity, and proportions

    更新日期:2020-04-09
  • Production of Carbon Materials from Nonclinkering Coal in Electric Roasting Furnaces
    Coke Chem. Pub Date : 2020-04-09
    I. M. Kashlev; V. M. Strakhov

    Abstract—This article addresses the production of carbon materials in an electric roasting furnace, which is a universal device covering a broad temperature range (500–1400°C). It is simple in structure, completely automatic, and characterized by high productivity and economic efficiency. Pieces of nonclinkering D, SS, T, and A coal may be heated in such furnaces. In appropriate conditions, coke may

    更新日期:2020-04-09
  • Characteristics of High-Temperature Coking Tar of Volatile-Rich Petroleum Coke
    Coke Chem. Pub Date : 2020-04-09
    E. I. Andreikov; O. V. Krasnikova; Yu. A. Dikovinkina; M. G. Pervova; M. V. Zorin; V. V. Kuprygin

    Abstract—The properties of tar from the high-temperature coking of volatile-rich petroleum coke (CA, coking additive) are compared with the properties of coal tar. According to thermogravimetric data for the residue at temperatures beyond 360°C, the content of high-boiling components is considerably higher for petroleum tar than for coal tar. However, its yield of coke residue is lower than for coal

    更新日期:2020-04-09
  • Determining the Wettability of Coal Surfaces
    Coke Chem. Pub Date : 2020-04-09
    Yu. F. Patrakov; S. A. Semenova; Yu. A. Kharlampenkova; S. A. Sozinov

    Abstract—For Kuznetsk Basin coal of different metamorphic stages, the fundamental difference between determining the limiting wetting angle of a coal surface by means of a hanging bubble and a sitting droplet is determined. The influence of surface preparation (briquetting of powder, plane cleavage, or surface polishing after plane cleavage) on the limiting wetting angle is investigated. The methodological

    更新日期:2020-04-09
  • Ash Composition of Lignite
    Coke Chem. Pub Date : 2020-03-17
    N. I. Fedorova; Z. R. Ismagilov

    AbstractFive lignite samples from Russia’s Itatsky, Munai, Arkharo-Boguchansky, and Kangalassky fields and the Mongolian Baganuur field are characterized on the basis of technical analysis, their elemental composition, calorific value, petrographic composition, and the properties of their mineral component. Experimental data regarding the chemical composition of their ash residues permit empirical

    更新日期:2020-03-17
  • Fifth Russian Coking Conference: A Report
    Coke Chem. Pub Date : 2020-03-17
    D. G. Zublev; N. A. Novikov

    AbstractThe materials presented at the Fifth Russian Coking Conference (Moscow, October 10–11, 2019) are reviewed.

    更新日期:2020-03-17
  • Predicting the Hot Strength of Coke on the Basis of Batch Characteristics
    Coke Chem. Pub Date : 2020-03-17
    V. I. Shcherbakova; A. V. Shilyakov; S. N. Klyukin; A. V. Bondarenko; V. A. Bondarenko

    AbstractBy means of a regression model, the strength CSR of coke after reaction with carbon dioxide may be predicted at the stage of batch formulation. This model takes account of the data from technical, petrographic, and plastometric analysis of the batch. On that basis, the value determined on the basis of the rank composition may be refined. The model is developed for the raw materials available

    更新日期:2020-03-17
  • Fuels Derived from Papermaking and Coffee Wastes
    Coke Chem. Pub Date : 2020-03-17
    V. M. Zaichenko; G. A. Sychev; Yu. M. Faleeva

    AbstractA two-stage technology permitting pyrolytic conversion of biomass to gaseous fuel is considered, for the example of papermaking and coffee wastes: sawdust, sludge, and parchment hulls from coffee beans. Analysis of the initial materials and the products of thermal processing shows that 1 kg of biomass yields 1.23–1.41 m3 of producer gas. The calorific value of the gas produced is 10.69–10.74

    更新日期:2020-03-17
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