Coke and Chemistry最新文献_第9页

Pitch-Like Products Obtained by the Thermal Solution of Coal in Anthracene Oil 煤在蒽油中热解得到的沥青状产品

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Coke and Chemistry Pub Date : 2024-02-06 DOI: 10.3103/S1068364X23701156

A. V. Nevedrov, A. V. Papin, T. G. Cherkasova

引用次数: 0

Study on the Relationship between Chemical Structure and Thermoplasticity of Moderately Metamorphic Coking Coal 中变质焦煤化学结构与热塑性关系研究

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Coke and Chemistry Pub Date : 2024-02-06 DOI: 10.3103/S1068364X2360001X

Yefei Lv, Zhang Sun, Wenjia Hu, Jiawei Han, Ning Shang

{"title":"Study on the Relationship between Chemical Structure and Thermoplasticity of Moderately Metamorphic Coking Coal","authors":"Yefei Lv, Zhang Sun, Wenjia Hu, Jiawei Han, Ning Shang","doi":"10.3103/S1068364X2360001X","DOIUrl":"10.3103/S1068364X2360001X","url":null,"abstract":"The quality of coke is to some extent closely related to the technological properties of coking coals due to the differences in chemical structure of coking coals with various degrees of metamorphosis. To explore the correlation between the chemical structure of coking coal and thermoplastic index, in order to better grasp the properties of coking coal, reduce the waste of coking coal resources, and help to achieve the goal of “dual carbon.” The correlation between the chemical structure and thermoplastic index was investigated by fitting FT-IR spectra of eight moderately metamorphosed coking coals and the determination of the caking index and Gieseler fluidity. Research shows that a good correlation can be observed between the average aliphatic side chain length, aromaticity and the aromatic hydrogen rate and the leverage diagram of the volatile fraction effect of coking coal; extremely close links between the three structural parameters and the thermoplastic properties at the same time; The chemical structure parameters can be used to predict the volatile fraction and thermoplastic properties of coking coals.","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"66 10","pages":"526 - 535"},"PeriodicalIF":0.4,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139769723","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

Emissions from Beehive Coke Ovens and Their Impact on Ambient Air Quality 蜂窝焦炉的排放物及其对环境空气质量的影响

IF 0.4

Coke and Chemistry Pub Date : 2024-02-06 DOI: 10.3103/S1068364X22600063

Dal Singh Kharat

{"title":"Emissions from Beehive Coke Ovens and Their Impact on Ambient Air Quality","authors":"Dal Singh Kharat","doi":"10.3103/S1068364X22600063","DOIUrl":"10.3103/S1068364X22600063","url":null,"abstract":"Beehive coke ovens are characterized as the air polluting industries. Their pollution potential and impact on the ambient air quality were assessed in the present work. The coke oven emission monitoring was conducted in respect of particulate matter and the gaseous pollutants at eleven representative plants located in the different zones of India. While selecting the representative ovens, types, sizes, technologies adopted, locations and the provisions of pollution control devices were considered. The stack emission monitoring results of beehive coke ovens shown the average concentration of particulate matter as 237 mg/Nm3. The sulphur oxides emissions were observed as 120 to 598 mg/Nm3 with average 391 mg/Nm3. The emission levels of nitrogen oxides were found in the range of 283 to 513 mg/Nm3 with an average of 378 mg/Nm3. The emissions of carbon monoxide were noticed varying from 123 to 412 mg/Nm3 giving an average of 227 mg/Nm3. The impacts of emissions from the beehive coke ovens were assessed by measuring the ambient air quality at upwind and downwind locations at the boundary of each oven. The ambient air quality parameters include PM10, PM2.5, sulphur dioxide, nitrogen dioxide and carbon monoxide. Based on the air quality monitoring results, an air quality index was calculated using the linear segmented principle for cove ovens at upwind and downwind location. It was noticed that the emissions enhanced the air quality index values at downwind locations of coke oven plants. The beehive coke oven emissions impacted 3.36 to 62.13% deterioration in the ambient air quality. The deterioration in air quality is mainly attributed to the fugitive emissions.","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"66 10","pages":"536 - 543"},"PeriodicalIF":0.4,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139769729","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

Carbon Materials as a Source of Vanadium 作为钒来源的碳材料

IF 0.4

Coke and Chemistry Pub Date : 2024-02-06 DOI: 10.3103/S1068364X23701193

A. I. Volkov, P. I. Stulov, U. A. Kologrieva

引用次数: 0

Effects of Imidazole Ionic Liquids with Different Chain Lengths on Caking Property of Shenhua Long-Flame Coal 不同链长的咪唑离子液体对神华长焰煤结块特性的影响

IF 0.4

Coke and Chemistry Pub Date : 2024-02-06 DOI: 10.3103/S1068364X23701235

Kangshun Han, Yuan Fang, Ying Chen, Shuling Wang, Xiangchun Liu, Ping Cui

引用次数: 0

Chemically Activated Carbon for the Adsorption of Aniline from Water 用于吸附水中苯胺的化学活性炭

IF 0.4

Coke and Chemistry Pub Date : 2024-02-06 DOI: 10.3103/S1068364X2370117X

I. Yu. Zykov, N. I. Fedorova, V. E. Tsvetkov, N. N. Ivanov

引用次数: 0

Automated Control of Sorptional Treatment of Mine Wastewater 矿井废水吸附处理的自动控制

IF 0.4

Coke and Chemistry Pub Date : 2024-02-06 DOI: 10.3103/S1068364X23701168

S. G. Pachkin, P. P. Ivanov, L. A. Ivanova, A. G. Semenov, E. S. Mikhailova

{"title":"Automated Control of Sorptional Treatment of Mine Wastewater","authors":"S. G. Pachkin, P. P. Ivanov, L. A. Ivanova, A. G. Semenov, E. S. Mikhailova","doi":"10.3103/S1068364X23701168","DOIUrl":"10.3103/S1068364X23701168","url":null,"abstract":"<div>The treatment of mine wastewater is of great environmental importance. Treatment systems including sorption on activated carbon are widely used. The sorbents employed require periodic regeneration. That interrupts the wastewater flow. The solution is to use a battery of sorbent modules, which are regenerated in turn. Thus, the battery will always include a module that is being regenerated. The operating time of the sorbent modules without regeneration may be increased at no cost to treatment quality if the wastewater flow rate is decreased as the sorbent becomes saturated. However, this approach changes the overall productivity of the system. Accordingly, an automated system must be developed to monitor and regulate the distribution of the wastewater flow among the modules in the battery, taking account of the level of sorbent saturation in each one. The proposed automated system employs no less than five sorbent modules. The control algorithm ensures periodic shutdown of each of the modules for regeneration. The control system for each module adjusts the wastewater flow in accordance with its level of sorbent saturation.</div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"66 10","pages":"522 - 525"},"PeriodicalIF":0.4,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139770456","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

Optimizing the Chamber Temperature in Coke Batteries by Modeling 通过建模优化焦炭电池的炉膛温度

IF 0.4

Coke and Chemistry Pub Date : 2024-02-06 DOI: 10.3103/S1068364X23701223

M. V. Shishanov, M. S. Luchkin

引用次数: 0

Developing Additives Based on Russian Coal for the Thermal Hydrocracking of Heavy Tar 4. X-ray Diffraction Study of Coal Composition 开发基于俄罗斯煤的重焦油热加氢裂化添加剂 4.煤成分的 X 射线衍射研究

IF 0.4

Coke and Chemistry Pub Date : 2024-02-06 DOI: 10.3103/S1068364X23701144

Z. R. Ismagilov, A. K. Shigabutdinov, V. V. Presnyakov, M. R. Idrisov, A. A. Khramov, A. S. Urazaykin, A. N. Popova, S. A. Sozinov, K. S. Votolin

{"title":"Developing Additives Based on Russian Coal for the Thermal Hydrocracking of Heavy Tar 4. X-ray Diffraction Study of Coal Composition","authors":"Z. R. Ismagilov, A. K. Shigabutdinov, V. V. Presnyakov, M. R. Idrisov, A. A. Khramov, A. S. Urazaykin, A. N. Popova, S. A. Sozinov, K. S. Votolin","doi":"10.3103/S1068364X23701144","DOIUrl":"10.3103/S1068364X23701144","url":null,"abstract":"<div>The organic mass of coal from different fields is studied by X-ray diffraction. On the X-ray diffraction patterns, the amorphous carbon structure of the coal mainly corresponds to broad intense peaks due to its disordered stacking, with narrow peaks corresponding to the mineral component. X-ray analysis permits not only diagnostics of any carbon component but also determination of the dynamics and mechanism of phase transformations in carbon systems under the action of physicochemical factors. The mineral component of the coal mainly consists of oxidized silicon. Calcium is present in the coal’s organic mass. Iron and aluminum appear partially as organomineral compounds in mineral inclusions. The goal of the research is to select the optimal coal for the production of specialized activated carbon additives that may be used in the thermal hydrocracking of heavy oil-refining residues. These additives must meet requirements on their mineral composition and chemical structure.</div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"66 10","pages":"485 - 489"},"PeriodicalIF":0.4,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139769526","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

Pyrolysis of Coal by Nanosecond Laser Pulses 用纳秒激光脉冲热解煤炭

IF 0.4

Coke and Chemistry Pub Date : 2023-12-25 DOI: 10.3103/S1068364X23701119

Ya. V. Kraft, B. P. Aduev, N. V. Nelubina, V. D. Volkov, Z. R. Ismagilov

{"title":"Pyrolysis of Coal by Nanosecond Laser Pulses","authors":"Ya. V. Kraft, B. P. Aduev, N. V. Nelubina, V. D. Volkov, Z. R. Ismagilov","doi":"10.3103/S1068364X23701119","DOIUrl":"10.3103/S1068364X23701119","url":null,"abstract":"<div>The action of nanosecond laser pulses (wavelength 532 nm, pulse length 14 ns, pulse repetition rate 6 Hz, energy density of laser radiation 0.2–0.6 J/cm2) in G and Zh coal pellets is investigated, in an argon atmosphere. The gaseous products of sample pyrolysis include H2, CH4, C2H2, CO, and CO2. The content of the gaseous components is determined as a function of the laser energy density. In the range 0.2–0.4 J/cm2, the volume of flammable gases formed (referred to the mass loss of the sample) increases; at higher energy densities, practically no change in volume is observed. The gross calorific value of the flammable gases increases linearly from ~8–10 to 19 MJ/m3 with increase in energy density of the laser radiation from 0.2 to 0.6 J/cm2. A nanosecond pulse of energy density more than 0.4 J/cm2 results in intense ablation of the pellets containing 0.005 wt % polyvinyl alcohol. The coal pellets that contain no binder break down under the action of a nanosecond laser pulse of energy density exceeding 0.2 J/cm2.</div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"66 9","pages":"449 - 457"},"PeriodicalIF":0.4,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139051905","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