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THE USE OF A POLYMERIZATION MODERATOR BASED ON PARA-PHENYLENEDIAMINES IN THE PRODUCTION OF STYRENE 在苯乙烯生产中使用基于对苯二胺的聚合调节剂
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-123-140
Evgeny A. Danilov, Ilmir I. Tabrisov, N. A. Likhacheva, O. B. Prozorova
Currently, two types of reagents are used in industrial styrene production to prevent thermal polymerization during the rectification process: true inhibitors and polymerization retarders. Consumed in the process, the true inhibitor reacts with free radicals and breaks the reaction chain, determining the molecular weight of the polymer. The polymerization moderator reduces the concentration of the most mobile radicals and their lifetime, giving a hydrogen proton to the most reactive free alkyl radical. As a polymerization moderator, dinitrobutylphenol is the most effective, which, according to the degree of exposure to the body, belongs to the first class of danger. The main supplier of dinitrobutylphenol to Russia is the People's Republic of China. The paper considers the possibility of replacing the active styrene polymerization inhibitor with the domestic brand Inflow7007, which is a derivative of para-phenylenediamine. According to the set of characteristics, the new polymerization moderator belongs to moderately dangerous substances of the third hazard class.At the first stage of the work, comparative laboratory studies of four polymerization inhibitors were carried out. The dependence of the inhibitory ability on the concentration of the polymerization moderator, the kinetics of the process was studied, and a comparative analysis of domestic and imported analogues of inhibitory reagents was carried out.Next, an experimental industrial run was conducted at an existing styrene production plant, during which a gradual transition to a domestic inhibitor selected as a result of laboratory research was carried out. The transition was carried out in stages with the gradual replacement of dinitrobutylphenol with an inhibitor of the Inflow 7007 brand. Throughout the entire industrial pilot run, the polymer content in the cubic liquid of the raw styrene separation column was monitored. The conducted studies have shown the high efficiency of the proposed inhibitory system. According to the results of analytical control during the period of pilot tests, it was possible to reduce the average polymer content in the cubic liquid. In addition to increasing the effectiveness of polymerization inhibition in styrene production, the use of the proposed polymerization moderator will solve the problem of import substitution, increase worker safety, and reduce environmental risks.
目前,工业苯乙烯生产中使用两种试剂来防止整顿过程中的热聚合:真正的抑制剂和聚合延缓剂。在生产过程中,真正的抑制剂会与自由基发生反应,打断反应链,从而决定聚合物的分子量。聚合调节剂可降低流动性最强的自由基的浓度并缩短其寿命,从而为活性最强的自由烷基自由基提供一个氢质子。作为聚合调节剂,二硝基丁基苯酚是最有效的,根据人体接触程度,它属于第一类危险。俄罗斯的二硝基丁基苯酚主要供应国是中华人民共和国。本文考虑了用国内品牌 Inflow7007(对苯二胺的衍生物)替代活性苯乙烯聚合抑制剂的可能性。根据这组特征,新的聚合调节剂属于第三类危险物质中的中度危险物质。在工作的第一阶段,对四种聚合抑制剂进行了实验室对比研究。接下来,在现有的苯乙烯生产厂进行了一次工业实验,在此期间,逐步过渡到实验室研究选定的国产抑制剂。过渡是分阶段进行的,用 Inflow 7007 品牌的抑制剂逐步取代二硝基丁基苯酚。在整个工业试验运行期间,对苯乙烯原料分离塔立方体液体中的聚合物含量进行了监测。研究结果表明,所建议的抑制系统具有很高的效率。根据中试期间的分析控制结果,可以降低立方液体中的平均聚合物含量。除了提高苯乙烯生产中的聚合抑制效率外,使用拟议的聚合调节剂还能解决进口替代问题,提高工人安全,降低环境风险。
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引用次数: 0
DIVISION OF OILY EMULSIONS BY POLYSULFONAMIDE MEMBRANES TREATED WITH PLASMA OF GLOW AND CORONA DISCHARGES 用辉光和电晕放电等离子处理的聚磺酰胺膜分离油性乳液
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-6-30
V. O. Dryakhlov, Marina Yu. Alekseeva, Z. T. Sanatullova, I. G. Shaikhiev
The problem of hydrocarbon ingress into the environment is a global issue, associated with both local pollution near the source of formation and the hydrosphere as a whole. The application of energy- and resource-saving technologies to reduce waste emissions into the environment, with the possibility of their partial return to the technological cycle, is an optimal solution for preventing pollution and rational resource utilization. Membrane technologies meet these requirements and are a universal solution for purifying any pollutant with the possibility of its recovery. Moreover, the efficiency of these processes can exceed 99 %, while the equipment occupies less space and uses minimal reagents compared to other apparatus. Based on the above, this study presents research on the separation of hydrocarbon emulsions based on I20-A grade industrial oil using polysulfonamide membranes. To intensify the process and enhance resistance to oil fouling, polymer filters were treated with corona and glow discharge plasma. As a result of this modification, the separation efficiency increased from 80.9 % to 99.0 %, and the productivity increased by approximately 10 times. Analysis of the membranes using electron microscopy revealed surface deformations, such as changes in roughness, due to plasma treatment, leading to improved selectivity towards the water phase of the emulsion. Analysis of the IR spectra showed the most significant differences in absorption bands between the original and plasma-treated polysulfonamide (PSA) membranes in the area of C–O stretching vibrations, contributing to increased water adsorption in the corresponding area. The research results recommend the application of the tested membrane ultrafiltration method for treating wastewater containing emulsified oils, such as used lubricants or cleaning solutions. Plasma treatment of membrane filters with corona or glow discharge contributes to increased efficiency and productivity in emulsion separation.
碳氢化合物进入环境的问题是一个全球性问题,既涉及形成源附近的局部污染,也涉及整个水圈。采用节约能源和资源的技术来减少向环境排放废物,并有可能将其部分返回技术循环,是防止污染和合理利用资源的最佳解决方案。膜技术符合这些要求,是净化任何污染物并有可能将其回收的通用解决方案。此外,这些工艺的效率可超过 99%,与其他设备相比,设备占地面积更小,试剂用量最少。基于以上所述,本研究介绍了使用聚磺酰胺膜分离基于 I20-A 级工业油的碳氢化合物乳液的研究。为了强化工艺并提高抗油污能力,聚合物过滤器经过了电晕和辉光放电等离子处理。经过这种改良,分离效率从 80.9% 提高到 99.0%,生产率提高了约 10 倍。使用电子显微镜对滤膜进行的分析表明,由于等离子体处理,滤膜表面发生了变形,例如粗糙度发生了变化,从而提高了对乳液中水相的选择性。红外光谱分析显示,原始聚磺酰胺(PSA)膜和经等离子体处理的聚磺酰胺(PSA)膜在 C-O 伸展振动区域的吸收带差异最大,从而增加了相应区域对水的吸附。研究结果建议将测试的膜超滤方法用于处理含有乳化油的废水,如使用过的润滑油或清洁溶液。利用电晕或辉光放电对膜过滤器进行等离子处理,有助于提高乳液分离的效率和生产率。
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引用次数: 0
OPTIMIZATION OF TECHNOLOGICAL SCHEME FOR UNSTABLE HYDROCARBON CONDENSATES DEMETHANIZATION 不稳定烃类凝析油脱甲烷技术方案的优化
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-265-293
Anastasia I. Kazakova, Andrey V. Kurochkin, S. V. Akulov, Alena G. Chirkova, Iskander R. Sungatulin, S. R. Khafizova
The modern technological process allowing to achieve high recovery of C2+ components is low-temperature gas rectification, including demethanization stage of unstable hydrocarbon condensates. Demethanization is based on separation of gas-liquid mixture by low-temperature rectification. The yield and quality of the target gas separation products depend on the demethanizer operation. In this connection it is important to arrange the demethanization unit operation so as to preserve the separation quality in the column and minimize ethane losses with commercial gas. One of the methods of process optimization is the use of technological techniques aimed at reducing the flow rate of gas supplied to the column.This article presents a brief overview of the demethanization process, considers the features of demethanizer operation. Technological solutions of the leading engineering company Linde are analyzed and bottlenecks in the technological scheme are revealed: low depth of ethane recovery, which is associated with high losses of ethane with dry stripped gas; large diameter of the upper part of the demethanizer, which is associated with high loads of the column on the vapor phase. In this connection the optimized technology of the process developed by Research and Design Institute «PEGAZ» LLC is offered. It is shown that application of three-stage separation of gas-liquid streams before their feeding into the demethanizer leads to unexpected results: prevention of possible ethane entrainment, reducing ethane losses, reduction of vapor phase load in the upper part of the demethanizer due to feeding only separation residues into the column as a feed stream. Implementation of such a modified scheme allows increasing the degree of ethane recovery, reducing ethane losses, reducing the mass and dimensional characteristics of the column and its cost.
实现 C2+ 成分高回收率的现代技术工艺是低温气体精馏,包括不稳定碳氢化合物冷凝物的脱甲烷化阶段。脱甲烷基于低温精馏分离气液混合物。目标气体分离产品的产量和质量取决于脱甲烷器的操作。因此,必须合理安排脱甲烷装置的操作,以保持塔内的分离质量,并尽量减少乙烷与商品气的损失。优化工艺的方法之一是采用旨在降低供应给塔的气体流速的技术。文章分析了领先工程公司林德(Linde)的技术解决方案,并揭示了技术方案中的瓶颈:乙烷回收深度低,这与干脱气体中乙烷的高损失有关;脱甲烷器上部直径大,这与塔内气相负荷高有关。为此,"PEGAZ "研究设计院开发了优化的工艺技术。LLC 公司开发的优化工艺技术。结果表明,在将气液流送入脱甲烷器之前对其进行三级分离会产生意想不到的结果:防止可能的乙烷夹带、减少乙烷损失、减少脱甲烷器上部的气相负荷,因为只有分离残渣作为进料流送入塔中。采用这种改良方案可以提高乙烷回收率,减少乙烷损失,降低塔的质量和尺寸特性及其成本。
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引用次数: 0
REVIEW OF PHOSGENE-FREE TECHNOLOGIES FOR HEXAMETHYLENE-1,6-DIISOCYANATE PRODUCTION 不含光气的六亚甲基-1,6-二异氰酸酯生产技术综述
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-163-190
Emil R. Sharafutdinov, Sofia I. Fiterman, Nikolay A. Rudnev, Rishat R. Shiriyazdanov
One of the highly sought products for import substitution in Russia are polyurethanes, which are mainly produced from isocyanates. Today, isocyanates are produced using toxic phosgene, and the by-products of this production are hydrogen chloride and other toxic chlorinated derivatives. For this reason, the task of developing phosgene-free isocyanate production technology has been facing researchers for more than a decade.Hexamethylene-1,6-diisocyanate (HDI) is the most commonly used aliphatic isocyanate. With excellent photo-oxidation stability, HDI is a very valuable petrochemical product with high added value.This paper reviews the currently existing phosgene-free technologies for producing HDI, as well as the latest developments in this area.
在俄罗斯,聚氨酯是备受欢迎的进口替代产品之一,它主要由异氰酸酯生产。目前,生产异氰酸酯使用的是有毒的光气,其副产品是氯化氢和其他有毒的氯化衍生物。六亚甲基-1,6-二异氰酸酯(HDI)是最常用的脂肪族异氰酸酯。六亚甲基-1,6-二异氰酸酯(HDI)是最常用的脂肪族异氰酸酯。HDI 具有出色的光氧化稳定性,是一种非常有价值的石化产品,具有很高的附加值。
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引用次数: 0
COMPUTERIZATION INFLUENCE ON VISION: LEGAL ISSUES 计算机化对视觉的影响:法律问题
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-69-91
Alexander S. Shcherbakov, Yulia N. Savicheva, Reval D. Vakhitov, Yulia A. Iskhakova, Rimma R. Gabdrakhmanova
There are more than 450 main professions on the Russian labor market, a quarter of which involve working on a PC. In this regard, labor protection in the employee’s workplace is of high importance.Despite the fact that office workers are not burdened with physical labor, sedentary work at a computer carries a number of occupational hazards that can harm the body.Russian legislation does not provide for benefits or concessions when working with a PC; however, occupational diseases that may appear in this work environment occur no less frequently than for those who engage in physical labor.This article discusses aspects from the point of view of labor protection, labor legislation, and also provides recommendations for reducing the risk of injury to office workers.
俄罗斯劳动力市场上有 450 多种主要职业,其中四分之一需要在电脑前工作。然而,在这种工作环境下可能出现的职业病发生率并不亚于从事体力劳动的人。本文从劳动保护、劳动立法的角度进行了讨论,并提出了降低办公室工作人员受伤风险的建议。
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引用次数: 0
DIGITAL SOLUTIONS FOR QUALITY CONTROL OF DEMULSIFIERS 破乳剂质量控制的数字化解决方案
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-106-122
Viktor N. Gusakov, G. Z. Raskildina, S. S. Zlotsky
Digital technology for quality control of field demulsifiers based on a numerical algorithm for processing digitized Raman spectra (RS) and infrared (IR) spectra was developed and tested. The width of the acceptance limit of the numerical criterion for deciding on the proper quality of demulsifiers for various values of the specific risk of making a false negative decision was calculated. IR and Raman spectra of active substances (Laprols, Neonols, Amines) used for the production of commercial demulsifiers have been registered. Spectral zones and characteristic lines of absorption (IR spectra) and emission (Raman spectra) specific for Laprols, Neonols, Amines have been determined. Using the characteristic spectral bands of the active ingredients, the compositions of demulsifier samples from different batches were compared.
基于处理数字化拉曼光谱(RS)和红外光谱(IR)的数字算法,开发并测试了用于现场破乳剂质量控制的数字技术。计算了在不同的误判风险值下,决定破乳剂适当质量的数字标准接受限的宽度。已登记了用于生产商用破乳剂的活性物质(立普醇、霓虹醇、胺)的红外光谱和拉曼光谱。确定了 Laprols、霓虹醇和胺的特定吸收(红外光谱)和发射(拉曼光谱)光谱带和特征线。利用活性成分的特征光谱带,对不同批次的破乳剂样品的成分进行了比较。
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引用次数: 0
MODERN TECHNOLOGIES FOR GRAPHENE AND GRAPHENE-BASED COMPOUNDS PRODUCTION 生产石墨烯和石墨烯基化合物的现代技术
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-141-162
Vadim R. Subkhankulov, I. K. Saitov, Oleg L. Ryzhikov, M. Dolomatov
Here are presented different ways for synthesis of graphene, graphene oxide and turbostratic graphene, including chemical vapor deposition, mechanical and chemical exfoliation methods and their modifications, epitaxial growth and laser synthesis. Their main advantages and disadvantages are presented. Special attention is given to a novel way for turbostratic graphene production by flash pyrolysis in electrical impulse discharge. Finally compared main physical properties of graphene and its compounds produced using different production methods.
这里介绍了合成石墨烯、氧化石墨烯和湍流石墨烯的不同方法,包括化学气相沉积法、机械和化学剥离法及其改良方法、外延生长法和激光合成法。介绍了这些方法的主要优缺点。还特别介绍了在电脉冲放电中通过闪速热解生产湍流石墨烯的新方法。最后比较了使用不同生产方法生产的石墨烯及其化合物的主要物理性质。
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引用次数: 0
DEVELOPMENT OF TECHNICAL SOLUTIONS FOR MODERNIZATION OF POLYETHYLENE WAX GRANULATION UNIT 为聚乙烯蜡造粒装置的现代化开发技术解决方案
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-247-264
Nikolai M. Zakharov, Evgeny V. Ilyin, Ramil G. Khasanov
Industrial development trends in the Russian Federation actualize a number of important issues for the production sites of the petrochemical complex. Such issues include problems at enterprises related to environmental aspects and working conditions at the processing and disposal units of by-products and waste products.Polyethylene wax is a by-product of the polymerization reaction of ethylene. As part of solving the above problems related to the production of polyethylene, modern methods of melt granulation have been studied.The analysis of the parameters of the active polyethylene wax extraction unit and the key characteristics of the by-product has been carried out. The technological scheme of the continuous granulation unit, which includes a granulation tower, is proposed.Economic calculations show the expediency of recommending the use of the method in production.
俄罗斯联邦的工业发展趋势为石化联合企业的生产基地带来了一系列重要问题。聚乙烯蜡是乙烯聚合反应的副产品。为了解决上述与聚乙烯生产有关的问题,对熔融造粒的现代方法进行了研究。对聚乙烯蜡活性提取装置的参数和副产品的主要特征进行了分析。提出了包括造粒塔在内的连续造粒装置的技术方案。经济计算表明,建议在生产中使用该方法是可行的。
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引用次数: 0
ANALYSIS OF OCCUPATIONAL DISEASES AT PRODUCTION ENTERPRISES IN THE KEMEROVO REGION – KUZBASS FOR 2022: STATISTICS AND TRENDS 2022 年凯梅罗沃州(库兹巴斯)生产企业职业病分析:统计数据和趋势
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-53-68
Anastasia E. Ilyina, Anastasia S. Ushakova, Evgeniy N. Neverov
Analysis of Occupational Diseases in the Kemerovo Region for 2022 provides an overview of the factors leading to occupational diseases among employees of local enterprises. The article discusses key aspects of safety, including management attitudes, employee training and preparedness, communication and information sharing, and the implementation of modern technology. The highest rates of occupational diseases for 2022 in the Kemerovo region – Kuzbass were recorded at mining enterprises, including coal mining. Particular attention is paid to diseases such as diseases of the respiratory system, musculoskeletal system and eyes. An analysis of the causes of occupational diseases showed that the number of recorded cases in 2022 increased compared to the previous year 2021, and one of the main reasons for their occurrence is the human factor and low safety culture. The importance of introducing a culture of occupational safety in enterprises is to increase productivity, reduce risks and prevent occupational diseases. The importance of the participation of all employees in creating a safety culture is emphasized by reducing incidents in the workplace, as this contributes to the creation of a safe working environment and improves the overall well-being of the workplace, hence reducing the incidence of human error. The article proposes preventive measures to prevent and reduce the level of occupational diseases. Preventive measures are aimed at both the employee and the employer, because only in combination can an increase in safety culture be achieved, and therefore a reduction in the incidence of occupational diseases.
2022 年克麦罗沃州职业病分析》概述了导致当地企业员工患职业病的因素。文章讨论了安全的主要方面,包括管理态度、员工培训和准备、沟通和信息共享以及现代技术的实施。根据记录,克麦罗沃州-库兹巴斯 2022 年职业病发病率最高的是采矿企业,包括煤矿。呼吸系统、肌肉骨骼系统和眼睛等疾病受到特别关注。对职业病病因的分析表明,2022 年记录在案的病例数量比 2021 年有所增加,其主要原因之一是人为因素和低安全文化。在企业中引入职业安全文化的重要性在于提高生产率、降低风险和预防职业病。通过减少工作场所的事故,强调全体员工参与创建安全文化的重要性,因为这有助于创造安全的工作环境,提高工作场所的整体福利,从而减少人为失误的发生。文章提出了预防和减少职业病的预防措施。预防措施既针对雇员,也针对雇主,因为只有两者结合,才能提高安全文化,从而降低职业病的发病率。
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引用次数: 0
WORKING CONDITIONS AND OCCUPATIONAL DISEASES OF PHARMACEUTICAL WORKERS 制药工人的工作条件和职业病
Pub Date : 2024-06-07 DOI: 10.17122/ogbus-2024-3-92-105
Elena I. Bakhonina, Gleb L. Matuzov, Linaria I. Fazylova, Rozalina R. Khaybullina
The chemical and pharmaceutical industry plays a special role in the economy of the Russian Federation, due to the social significance of its products and its important role in the national security system. The domestic pharmaceutical market is developing rapidly, innovative medicines are being developed, the production of active pharmaceutical substances is increasing, technological processes, lines, and equipment are being modernized.To implement the production chains of various compounds, it is required to perform many operations and use various types of raw materials. The variability of the nomenclature of medicines affects the working conditions of production workers. In this regard, it is important to analyze the working conditions of workers in the chemical and pharmaceutical industry, as well as to study the causes of the development of occupational diseases of workers who have constant contact with chemicals of various origins.The basic industrial and professional groups of pharmaceutical industries are characterized by the impact of harmful psychophysiological and chemical factors, various forms of drug allergies and respiratory diseases are noted.Currently, it is impossible to completely exclude negative production aspects from the working environment of the chemical and pharmaceutical industry. This is due to the specifics of the technological process and equipment, and economic feasibility. It is necessary to study in detail the toxic effects of substances used or obtained in the process of drug synthesis.
由于其产品的社会意义及其在国家安全体系中的重要作用,化工和制药业在俄罗斯联邦经济中发挥着特殊作用。国内医药市场发展迅速,创新药物不断开发,活性药物的产量不断增加,技术工艺、生产线和设备不断现代化。药品名称的多变性影响了生产工人的工作条件。在这方面,重要的是分析化工和制药行业工人的工作条件,以及研究经常接触各种来源化学物质的工人患职业病的原因。制药行业的基本工业和专业组的特点是受到有害的心理生理和化学因素的影响,注意到各种形式的药物过敏和呼吸道疾病。目前,不可能完全排除化工和制药行业工作环境中的负面生产因素。这是由于技术工艺和设备的特殊性以及经济可行性造成的。有必要对药物合成过程中使用或获得的物质的毒性影响进行详细研究。
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引用次数: 0
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Oil and Gas Business
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