Coke and Chemistry最新文献

Determining the Reliability of the Classification Indices in State Standard GOST 25543-2013 for Correct Assessment of the Rank Composition of Coal 确定国家标准GOST 25543-2013中分级指标的可靠性，以正确评价煤的等级组成

IF 0.6

Coke and Chemistry Pub Date : 2026-09-10 DOI: 10.3103/S1068364X2660051X

K. V. Okhotnikov, V. P. Ivanov

引用次数: 0

Influence of Coal’s Metamorphic Stage on the Effectiveness of Stamp Charging 煤的变质阶段对印花装药效果的影响

IF 0.6

Coke and Chemistry Pub Date : 2026-09-10 DOI: 10.3103/S1068364X26600545

V. L. Vikulov, E. V. Karunova, O. A. Kalko

引用次数: 0

Sorptional Properties of Natural Coal Samples with Cyclic Methane Injection 循环甲烷注入对天然煤样品吸附性能的影响

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Coke and Chemistry Pub Date : 2026-09-10 DOI: 10.3103/S1068364X26600521

E. N. Kozyreva, A. A. Ryabtsev, D. D. Bukreev

引用次数: 0

Composition of Heavy Petroleum Tar and Its Use in the Production of Electrode Pitch Coke 重质石油焦油的组成及其在电极沥青焦生产中的应用

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Coke and Chemistry Pub Date : 2026-09-10 DOI: 10.3103/S1068364X26600569

A. T. Ordabaeva, Z. M. Muldakhmetov, S. V. Kim, M. G. Meiramov

{"title":"Composition of Heavy Petroleum Tar and Its Use in the Production of Electrode Pitch Coke","authors":"A. T. Ordabaeva, Z. M. Muldakhmetov, S. V. Kim, M. G. Meiramov","doi":"10.3103/S1068364X26600569","DOIUrl":"10.3103/S1068364X26600569","url":null,"abstract":"The organic components of heavy tar from Pavlodar Petrochemical Plant (Pavlodar, Kazakhstan) are investigated. Gas–liquid chromatography reveals the presence of 13 paraffinic hydrocarbons, each with between 9 and 21 carbon atoms. Most are low-molecular-weight paraffins (C9–C13), present in quantities of 2.88–7.12%. High-molecular-weight paraffins are observed in small quantities (<0.3%). That indicates the predominance of low-molecular-weight components in the tar. The petroleum pitch formed by heat treatment of the tar in the range 400–500°C is studied. In addition, the basic characteristics of coal tar pitch from the Karmet coke plant are determined. They best meet the requirements for grade-C electrode pitch. The electrophysical properties—dielectric permittivity and electrical resistivity—of the electrode coke obtained from coal tar pitch are also analyzed. Mixing of the petroleum pitch obtained in stepwise coking of heavy tar and the coal tar pitch obtained by vacuum distillation of Karmet coal tar pitch yields a composite. Analysis of the gaseous products and tars formed in pitch coking indicates that carbon dioxide CO2, methane CH4, and carbon monoxide CO predominate. The tars obtained on coking the petroleum pitch and coal tar pitch consist mainly of high-molecular paraffinic hydrocarbons (between C13 and C26). Further study of the electrophysical properties of the resulting electrode pitch coke is of interest.","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"69 6","pages":"341 - 348"},"PeriodicalIF":0.6,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fractal Analysis of the Pore Structure of Composite Sorbents Based on Lignite Coke 褐煤-焦炭复合吸附剂孔隙结构的分形分析

IF 0.6

Coke and Chemistry Pub Date : 2026-09-10 DOI: 10.3103/S1068364X26600557

I. Yu. Zykov

{"title":"Fractal Analysis of the Pore Structure of Composite Sorbents Based on Lignite Coke","authors":"I. Yu. Zykov","doi":"10.3103/S1068364X26600557","DOIUrl":"10.3103/S1068364X26600557","url":null,"abstract":"The pore structure of composite sorbents based on lignite coke is analyzed by means of fractal theory. The fractal sample dimensions are calculated using the Frenkel–Halsey–Hill (FHH) model, for isotherms of low-temperature nitrogen adsorption at 77 K obtained using an ASAP-2020 system. According to the model, the dependence of ln V on ln [ln (P0/P)] should be a straight line of negative slope S, from which the fractal dimension D may be calculated. However, the correct D value will only be obtained if the appropriate section of the line is selected. In the present work, the first linear section in the range between a monolayer coating and a multilayer coating is selected, in the portion where no surface smoothing is seen. The minimum coating thickness n in the selected range of relative pressure is 1.0. The maximum n is close to 1.3 for all the samples. Analysis of the results shows that the fractal dimensions of the composite sorbents based on lignite coke are between 2.31 and 2.52. In the oxidation of lignite by nitric acid and modification by iron salts, the textural characteristics grow on account of the formation of new pores and decrease in fractal dimension as a result of smoothing of the existing pore surface. Altogether, these factors lead to the formation of a pore system that is more orderly in shape and size.","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"69 6","pages":"335 - 340"},"PeriodicalIF":0.6,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Automated Monitoring and Control of Coke Plant Processes: A Review 焦化装置过程自动化监测与控制综述

IF 0.6

Coke and Chemistry Pub Date : 2026-09-10 DOI: 10.3103/S1068364X26600533

I. S. Bersenev

{"title":"Automated Monitoring and Control of Coke Plant Processes: A Review","authors":"I. S. Bersenev","doi":"10.3103/S1068364X26600533","DOIUrl":"10.3103/S1068364X26600533","url":null,"abstract":"The coke industry, traditionally regarded as capital- and energy-intensive, with challenging operating conditions, has undergone a fundamental technical transformation in the last decade. The present work reviews the current state of automated process control systems in the coke industry and emerging trends. The evolution of architectural solutions is considered: from three-level hierarchical systems to cyberphysical systems integrating digital twins, predictive analytics, and adaptive algorithms based on machine learning. Particular attention is paid to the concept of intelligent coking (the smart coke plant), including combinatorial modeling of coke properties, optimal thermal control, robotized diagnostics, digital resource stores, and smart coal flow dispatching. The results of introducing machine vision systems for monitoring gas liberation (at NLMK), algorithms for detecting anomalies (at EVRAZ ZSMK), smart coal blending and procurement management (at Risun Group, China, and Shagang Group), digital 3D stores based on laser scanning and high-precision positioning, and the introduction of systems for automatic assessment of coke quality are considered. The patent literature regarding coke plant automation is analyzed, and key patent holders are identified (SunCoke, Shagang, and Paul Wurth). Unsolved problems are noted: the lack of labeled industrial data, the low baseline level of automation at Russian enterprises, skill deficits, and the need to standardize communication protocols. The review confirms the importance of the Coke Plant 4.0 paradigm, on the basis of hybrid (physical–statistical) models and end-to-end quality tracking from the coal batch to the coke produced.","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"69 6","pages":"320 - 328"},"PeriodicalIF":0.6,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extracting Rare Elements from Coal 从煤中提取稀有元素

IF 0.6

Coke and Chemistry Pub Date : 2026-08-28 DOI: 10.3103/S1068364X26600466

K. K. Razhmakhnin, L. V. Shumilova

{"title":"Extracting Rare Elements from Coal","authors":"K. K. Razhmakhnin, L. V. Shumilova","doi":"10.3103/S1068364X26600466","DOIUrl":"10.3103/S1068364X26600466","url":null,"abstract":"The possibility of extracting rare and rare earth metals from volatile ash residues formed in the combustion of lignite from the Transbaikal territory in a semicoking furnace is considered. A semicoke separation system consisting of a furnace with a retort and a unit for gas and dust capture is used for combustion of the lignite at 500–550°C. The efficiency of dust capture is 95%. After combustion, the captured dust (volatile products) is enriched (by a hydrometallurgical method) to extract rare elements (metals). This technology yields semicoke, which is widely used in industry, and a volatile component, which is a source of rare metals (if they are also present in the initial lignite). The elemental composition of the lignite samples and their ashy volatile products in the semicoking furnace is determined. The content of rare and rare earth metals in the production solution is established. It is found that rare and rare earth metals (Ga, Rb, Ti, Sr, Zr, Ge) may be extracted from the volatile ash residues of lignite combustion by leaching with acids (HNO3, H2SO4, HCl, and mixtures of HNO3 with HCl). The best leaching conditions for the volatile ash residues of coal are observed when ultrasound is applied to the pulp so that the rare and trace elements (titanium, strontium, gallium, and rubidium) required in high-tech industries are efficiently extracted.","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"69 5","pages":"286 - 290"},"PeriodicalIF":0.6,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148823070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production and Electrochemical Properties of a Porous Carbon Material Derived from Sapropelic Coal for Supercapacitors 超级电容器用腐泥煤制备多孔碳材料及其电化学性能研究

IF 0.6

Coke and Chemistry Pub Date : 2026-08-28 DOI: 10.3103/S1068364X26600430

N. S. Zakharov, G. Yu. Simenyuk, T. S. Nechaeva

{"title":"Production and Electrochemical Properties of a Porous Carbon Material Derived from Sapropelic Coal for Supercapacitors","authors":"N. S. Zakharov, G. Yu. Simenyuk, T. S. Nechaeva","doi":"10.3103/S1068364X26600430","DOIUrl":"10.3103/S1068364X26600430","url":null,"abstract":"The electrochemical properties of a porous carbon material obtained by alkali activation of sapropelic coal are investigated. Sapropelic coal may be regarded as a promising and readily available precursor for the creation of efficient supercapacitor electrodes. The material is tested in a symmetric two-electrode cell with neutral aqueous sodium sulfate (Na2SO4) electrolyte. Mutually complementary test methods are employed: cyclic voltammetry, galvanostatic charging and discharging, and electrochemical impedance spectroscopy. The data obtained by independent methods are highly consistent: the values of the unit capacitance obtained by these methods are, respectively, 93.7 F/g (10 mV/s), 90 F/g (10 mA), and 82.6 F/g (0.01 Hz). The optical window of working voltage ensuring stability of the system in an aqueous medium is from ±1.0 to ±1.2 V. The low values of the equivalent series resistance (2.8 Ω) and the resistance to charge transfer (3.5 Ω) confirm the high ionic conduction and accessibility of the material’s pore structure. The conclusion is that activated sapropelic coal is an effective and environmentally benign alternative to traditional carbon materials. The agreement of data from the three electrochemical methods indicates the reliability of the results and the good prospects for using sapropelic coal in the production of energy stores.","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"69 5","pages":"271 - 275"},"PeriodicalIF":0.6,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148823125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tenth International Conference on the Coke Industry, Its State and Prospects: A Review of the Proceedings 第十届国际焦炭工业、现状与展望会议论文集

IF 0.6

Coke and Chemistry Pub Date : 2026-08-28 DOI: 10.3103/S1068364X2660048X

A. I. Volkov

{"title":"Tenth International Conference on the Coke Industry, Its State and Prospects: A Review of the Proceedings","authors":"A. I. Volkov","doi":"10.3103/S1068364X2660048X","DOIUrl":"10.3103/S1068364X2660048X","url":null,"abstract":"On April 23 and 24, 2026, Yekaterinburg hosted the Tenth International Conference under the rubric: The Coke Chemical Industry: Its State and Prospects. In 2025, coke output in Russia was around 26 million t (<5% of the global total). For comparison, output in China was ~500 million t (~70% of the global total). The present review considers coke oven heating technology with positive pressure, regulation of the temperature conditions, digital systems, environmental law, and plastic waste recycling with disposal in coke ovens. The issue of standardization is addressed. Technology for stamp charging of coal batch and for stepped heating to reduce nitrogen oxide emissions is outlined. The production of special types of coke is discussed. Information regarding the batch composition at Russian coke plants is presented. Experience with coal concentrates of different piece size is summarized. The accomplishments of various companies and research institutes in manufacturing production, monitoring, and test equipment are noted. The prospects for improving coke quality by means of batch additives are discussed. Applications of artificial intelligence at coke plants are considered. Information is provided regarding vertical coke ovens with thermal recuperation. The basic trends in capture shop development are reported. Information regarding the production of mesophase coal pitch and compound pitch is presented. The introduction of wastewater and smokestack gas treatment at coke plants is briefly chronicled.","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"69 5","pages":"300 - 306"},"PeriodicalIF":0.6,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148823121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Oxidation of Binder Pitch to Improve Binder Quality 热氧化粘结剂沥青以提高粘结剂质量

IF 0.6

Coke and Chemistry Pub Date : 2026-08-28 DOI: 10.3103/S1068364X26600478

R. Yu. Kovalev

引用次数: 0