Coke and Chemistry最新文献

Improvement in Heat Transfer at Coke Battery Chamber Walls 改善焦炭蓄电池室壁的传热性能

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Coke and Chemistry Pub Date : 2024-10-23 DOI: 10.3103/S1068364X24600659

V. V. Zinov’eva, M. S. Luchkin, M. V. Shishanov, A. Yu. Naletov

引用次数: 0

Using Anthracene Oil from Coal Tar in the Thermal Solvolysis of Polymers 利用煤焦油中的蒽油热溶解聚合物

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Coke and Chemistry Pub Date : 2024-10-23 DOI: 10.3103/S1068364X24600635

A. P. Krasikova, E. I. Andreikov, D. O. Antonov, M. G. Pervova

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Surface State of Purolate Standard Activated Carbon after Sorption of Minerals 吸附矿物质后 Purolate 标准活性炭的表面状态

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Coke and Chemistry Pub Date : 2024-10-23 DOI: 10.3103/S1068364X24600684

E. S. Mikhaylova, I. V. Timoshchuk, A. K. Gorelkina, S. A. Semenova

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Thermal Decomposition of Russian and Mongolian Coal 俄罗斯和蒙古煤炭的热分解

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Coke and Chemistry Pub Date : 2024-10-23 DOI: 10.3103/S1068364X24600696

P. N. Kuznetsov, V. A. Safin, B. Avid, L. I. Kuznetsova, E. S. Kamensky, N. Navchtsetseg, T. Azzaya, R. A. Vaganov

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Combustion of Carbonizate with Biowaste from Birch Processing: Thermal Analysis 桦木加工过程中碳酸盐与生物废料的燃烧：热分析

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Coke and Chemistry Pub Date : 2024-10-23 DOI: 10.3103/S1068364X24600647

A. V. Zhuikov

{"title":"Combustion of Carbonizate with Biowaste from Birch Processing: Thermal Analysis","authors":"A. V. Zhuikov","doi":"10.3103/S1068364X24600647","DOIUrl":"10.3103/S1068364X24600647","url":null,"abstract":"<div>New approaches to thermal energy generation are necessary for reasons of resource conservation and environmental protection. One option is to convert coal-fueled boilers to mixtures based on coal and biomass or to mixtures with more efficient nontraditional fuels. However, that entails expansion of experimental resources and research. In the present work, the main stages in the combustion of carbonizates, biomass, and their mixtures are analyzed and the main stages in the combustion of such mixtures with nonisothermal heating are determined, taking account of synergy between the components. Carbonizate obtained by gasification of Chernogorsky coal, birch shavings, and their mixtures are subjected to thermal analysis in an oxidative medium, with heating at 20°C/min. The basic combustion characteristics are established: the ignition temperature of the volatiles and coke residue; the temperature at which combustion ends; the maximum rate of mass loss and the corresponding temperature; and the combustion index, which permits comparison of the combustibility of different fuels. The ignition temperature is 45% higher for the carbonizates than for birch shavings; the combustion index is lower by a factor of 25. The total combustion time is greater for the mixture than for individual fuels. The most energy-efficient fuel mixture is identified. Adding biomass to carbonizates may improve not only the combustion characteristics of the carbonizates but the environmental characteristics, thanks to the low ash content and the minimal sulfur and nitrogen content in the biomass waste.</div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 7","pages":"413 - 420"},"PeriodicalIF":0.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518557","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

Mechanical Activation of Coal Mining and Enrichment Tailings 煤炭开采和富集尾矿的机械活化

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Coke and Chemistry Pub Date : 2024-10-23 DOI: 10.3103/S1068364X24600672

V. I. Golik, R. V. Klyuev, N. V. Martyushev, M. V. Grechneva, M. Y. Ivanov

引用次数: 0

Modernization of Coke Production at Magnitogorsk Iron and Steel Works (MMK) 马格尼托哥尔斯克钢铁厂（MMK）焦炭生产现代化项目

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Coke and Chemistry Pub Date : 2024-10-23 DOI: 10.3103/S1068364X24600660

G. P. Kornilov, A. N. Smirnov, A. A. Bochkarev, D. A. D’yakov

引用次数: 0

Influence of the Pyrolytic Temperature on the Carbon Structure of the α Fraction from Coal Tar Pitch: EPR and NMR Spectroscopy 热解温度对煤焦油沥青 α 馏分碳结构的影响：EPR 和 NMR 光谱分析

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Coke and Chemistry Pub Date : 2024-10-23 DOI: 10.3103/S1068364X24600623

N. S. Zakharov, O. M. Gavrilyuk, S. A. Sozinov, A. P. Nikitin

引用次数: 0

Erratum to: Insight into Upgrading Caking Property of Shenmu Long Flame Coal Using Low-temperature Slow Pyrolysis Treatment 勘误：利用低温缓慢热解处理提升神木长焰煤结块特性的启示

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Coke and Chemistry Pub Date : 2024-10-23 DOI: 10.3103/S1068364X24070019

Kangshun Han, Yuan Fang, Shixian Fang, Xiangchun Liu, Ping Cui

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Role of Calcium Oxide in Directional Regulation Microstructure of Coke during High Sulfur Coal Pyrolysis 氧化钙在高硫煤热解过程中定向调节焦炭微观结构中的作用

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Coke and Chemistry Pub Date : 2024-09-27 DOI: 10.3103/S1068364X24701333

Rui Zhu, Wenjie Shao, Shuai Zhang, Zhihao Wang, Zhao Lei, Xiangchun Liu, Ping Cui, Qiang Ling

{"title":"Role of Calcium Oxide in Directional Regulation Microstructure of Coke during High Sulfur Coal Pyrolysis","authors":"Rui Zhu, Wenjie Shao, Shuai Zhang, Zhihao Wang, Zhao Lei, Xiangchun Liu, Ping Cui, Qiang Ling","doi":"10.3103/S1068364X24701333","DOIUrl":"10.3103/S1068364X24701333","url":null,"abstract":"To explore the influence of calcium addition on microstructure of coke during high sulfur coal pyrolysis, different amounts of CaO were added to investigate their effect on sulfur migration and transformation during coal pyrolysis, along with the microcrystalline structure, optical texture and microstrength of coke derived from coal pyrolysis were also analyzed to insight the role of CaO in directional regulation microstructure of coke. The results showed that when the sulfur content in Changhong coal (CH) reached 2.79%, increasing the CaO addition from 1 to 3 wt % led to a rise in the total sulfur content in the coke derived from high sulfur coal pyrolysis, from 2.2 to 2.5%. Concurrently, the rate of sulfur fixation during pyrolysis exhibited improvement, escalating from 59.6% to 67.4%. Moreover, upon addition of 3 wt % CaO, the relative proportion of sulfate sulfur in coke attained a peak value of 56.4%, accompanied by reductions in the relative abundance of thiophene sulfur, sulfoxide sulfur, and sulfone sulfur to 21.1, 10.3, and 6.9%, respectively. The migration and transformation of organic sulfur to inorganic sulfur became more pronounced, corresponding to an increase in the Mf + Mm + Mc + Fi structures in the coke from 70.57 to 76.75%. At 2 wt % CaO addition to coke featuring a 2.79% sulfur content, the occurrence of Mf + Mm + Mc + Fi structures in coke peaks at 78.7%, while isotropic structure diminished to a nadir of 10.1%. Concurrently, the optical texture index (OTI) and microstrength index (MSI) for the coke increased to 157.65 and 45.5%, respectively, showing a slight improvement in microstrength compared to the original coke sample. The content of Mf + Mm + Mc and I in the optical texture of coke was correlated with the migration and transformation of sulfate sulfur, thiophene sulfur, and other sulfur species during coal pyrolysis under the addition of calcium.","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"67 6","pages":"359 - 369"},"PeriodicalIF":0.4,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414676","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