Theoretical Foundations of Chemical Engineering最新文献_第9页

Intensification of the Rectification Process with Partial Condensation 部分冷凝强化精馏过程

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600750

N. A. Voynov, D. A. Zemtsov, V. A. Chernov, O. P. Zhukova, D. G. Slashchinin, T. A. Luneva

{"title":"Intensification of the Rectification Process with Partial Condensation","authors":"N. A. Voynov, D. A. Zemtsov, V. A. Chernov, O. P. Zhukova, D. G. Slashchinin, T. A. Luneva","doi":"10.1134/S0040579526600750","DOIUrl":"10.1134/S0040579526600750","url":null,"abstract":"The work is aimed at intensifying the rectification process using the example of studying a binary mixture of ethanol–water and a multicomponent medium (alcohol condensate). The results of experimental studies of rectification during condensation of vapors on the surface of a plate, as well as on horizontally and vertically installed pipes, are presented. It is shown that the efficiency of enrichment and separation of the steam mixture depends on the ratio of liquid and vapor flows, the specific heat flux, the temperature of the heat-transfer surface, and the method of forming the condensate film. The value of the temperature difference between the coolant supplied to the heat-exchange surface and the condensing vapors is established, as well as the specific heat flow released by the condensing vapors, at which the greatest enrichment is achieved. The process of heat removal is carried out by boiling a flowing film of water over a heat-transfer surface, ensuring a relatively low temperature difference during rectification, and the heat transfer coefficients are calculated. The results of separation of a multicomponent medium during partial condensation are obtained and the factors influencing the separation efficiency are established. Based on the research results, a packed column dephlegmator is tested, which makes it possible to obtain rectified alcohol with ethanol losses of less than 1% by weight.","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 6","pages":"1512 - 1522"},"PeriodicalIF":0.4,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Features of the Interaction of Dimethyl-Phosphate-Containing Ionic Liquids with Elemental Sulfur in Various Environments 含磷酸二甲酯离子液体在不同环境下与单质硫相互作用的特征

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600841

N. P. Tarasova, S. A. Muradyan, V. K. Balezina, E. G. Krivoborodov

引用次数: 0

Eight Steps to Digitalize the Structure and Properties of Dispersion-Filled Polymer Composite Materials 分散体填充聚合物复合材料结构与性能数字化的八个步骤

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600786

I. D. Simonov-Emel’yanov

引用次数: 0

Features of the Formation of Internal Separatric Varieties in Systems of Different Physical and Chemical Nature 不同物理化学性质体系内部分离变异的形成特征

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526601019

A. V. Frolkova, A. K. Frolkova, A. N. Novruzova

{"title":"Features of the Formation of Internal Separatric Varieties in Systems of Different Physical and Chemical Nature","authors":"A. V. Frolkova, A. K. Frolkova, A. N. Novruzova","doi":"10.1134/S0040579526601019","DOIUrl":"10.1134/S0040579526601019","url":null,"abstract":"The maximum capabilities of the process of rectification separation of multicomponent mixtures depend on the features of the structure of the liquid–vapor equilibrium diagram, in particular on the presence of internal dividing surfaces in the diagram. In this paper, we investigate the patterns of formation of the structure of separatric surfaces of maximum dimension for systems of different chemical nature. For systems with the same deviations, when azeotropes relative to components of the same component are nodal points, an approach to determining the number of saddle-shaped azeotropes of the first and (n – 2)-th orders and, accordingly, the number of internal separatric manifolds, is developed. The proposed approach is illustrated and validated using model systems and industrial mixtures as examples. The expediency of using one of the types of separation (first, second, intermediate) depending on the number and structure of internal separator surfaces is shown. The research presented in the article is aimed at developing the fundamental theory of thermodynamics of heterogeneous systems in terms of studying the structures of phase diagrams and the mechanisms of their formation using thermodynamic–topological analysis within the framework of the general concept of the scientific school of Professor Leonid Antonovich Serafimov, Doctor of Technical Sciences.","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 6","pages":"1692 - 1700"},"PeriodicalIF":0.4,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of the Relationship between the Composition of Aqueous Mixtures Containing Esters and Alcohols and the Energy Efficiency of Separation Schemes 酯醇水溶液组成与分离方案能量效率关系的研究

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600968

M. M. Sibirtsev, A. K. Frolkova

引用次数: 0

Study of the Possibility of Using Gas with Various Nitrogen Contents for Ammonia Production 不同含氮气体用于制氨的可能性研究

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600920

M. Kh. Sosna, D. A. Kovaleva, D. V. Maksimova, A. M. Kozlov

引用次数: 0

Degradation of Enrofloxacin in Aqueous Solutions at Hybrid Cavitation–Plasma Treatment 空泡-等离子体混合处理水溶液中恩诺沙星的降解

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526601056

T. D. Ksenofontova, E. S. Mikhalev, R. V. Nikonov, I. S. Fedulov, A. A. Arkhipenko, M. S. Doronina, V. B. Baranovskaya, A. V. Kamler

{"title":"Degradation of Enrofloxacin in Aqueous Solutions at Hybrid Cavitation–Plasma Treatment","authors":"T. D. Ksenofontova, E. S. Mikhalev, R. V. Nikonov, I. S. Fedulov, A. A. Arkhipenko, M. S. Doronina, V. B. Baranovskaya, A. V. Kamler","doi":"10.1134/S0040579526601056","DOIUrl":"10.1134/S0040579526601056","url":null,"abstract":"The presence of fluoroquinolone antibiotics in aquatic environments raises serious ecological concerns due to their toxicity and ability to promote antibiotic resistance development. This study investigates a combined approach to water purification that integrates hydrodynamic cavitation with plasma discharge for the degradation of enrofloxacin in aqueous solutions. The influence of electrical pulse power (1.5 and 3.0 kW) and the number of treatment cycles (1–2) was evaluated at initial antibiotic concentrations of 10 and 100 mg/L. At lower power during two treatment cycles, the degree of antibiotic degradation has reached 69.2%. Additionally, a prolonged effect of the treatment was identified, caused by the oxidation of intermediate decomposition products by reactive oxygen species generated within the system. The most pronounced effect has been observed at an enrofloxacin concentration of 10 mg/L. The obtained results confirm the high efficiency and practical potential of this hybrid technology for the removal of antibiotics from water treatment systems.","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 6","pages":"1709 - 1716"},"PeriodicalIF":0.4,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A New Reactor Configuration for Maintaining a Stable Plasma Discharge when Treating Water with High Electrical Conductivity 处理高导电性水时保持稳定等离子体放电的新反应器配置

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600889

E. S. Mikhalev, E. V. Morachevskaya, A. V. Kamler, V. M. Bayazitov, R. V. Nikonov

{"title":"A New Reactor Configuration for Maintaining a Stable Plasma Discharge when Treating Water with High Electrical Conductivity","authors":"E. S. Mikhalev, E. V. Morachevskaya, A. V. Kamler, V. M. Bayazitov, R. V. Nikonov","doi":"10.1134/S0040579526600889","DOIUrl":"10.1134/S0040579526600889","url":null,"abstract":"In this work, the authors improve the installation for treating water with a plasma discharge in a cavitation field. The new reactor configuration allows for the treatment of water with increased electrical conductivity and mineralization (up to 5 g/L). This is achieved by increasing the reactor’s cavitation region by creating an idle section, which acts as an additional resistance and reduces the leakage current arising from ionic conductivity under conditions of increased mineralization. The use of the new reactor design significantly expands the area of potential practical application of this installation. Water used in agriculture for irrigation is usually characterized by increased total mineralization of plants and soaking seeds. During the work, the installation is also tested in an aeroponic system for germinating seeds of the spring barley variety “Mamluk.” It is determined that the use of water treated with plasma discharge leads to an increase in the content of vitamin C by 29% and total nitrogen and phosphorus by 25 and 13%, respectively.","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 6","pages":"1611 - 1617"},"PeriodicalIF":0.4,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Methods for Modeling the Process of High-Temperature Conversion of Natural Gas 天然气高温转化过程的建模方法

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600828

D. A. Lgotina, R. A. Sukhachev, A. A. Chubarova, D. A. Sergeicheva, L. N. Stepanova, Yu. G. Malinovsky, P. V. Prudnikov, A. V. Lavrenov

引用次数: 0

Practical Application of Plasma Water Purification Method in Closed-Loop Fish Farming Systems 等离子体水净化方法在闭环养鱼系统中的实际应用

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526601044

A. V. Kamler, V. M. Bayazitov, I. S. Fedulov, R. V. Nikonov, E. S. Mikhalev, I. O. Abramova

引用次数: 0