scholarly journals COMPARATIVE ANALYSIS OF AQUEOUS SOLUTIONS OF AMINES IN HYDROGEN-CONTAINING GAS PURIFICATION PROCESSES

2020 ◽  
Vol 2020 (1) ◽  
pp. 65-66
Author(s):  
Pavel Soshnikov ◽  
Ivan Semenov
Keyword(s):  
Mathematical Modeling ◽  
Comparative Analysis ◽  
Aqueous Solutions ◽  
Gas Purification ◽  
Gas Composition ◽  
Acid Gas

A comparative analysis of aqueous solutions of monoethanolamine (MEA) and methyldiethanolamine (MDEA) used as acid gas absorbers in the purification of hydrogen-containing gas is performed. The necessity of complex mathematical modeling of the process for developing recommendations on the choice of the absorber for a specific gas composition is shown

COMPARATIVE ANALYSIS OF ATTITUDES TOWARDS ENVIRONMENTAL ISSUES

2020 ◽  
Author(s):  
M.V. Yadrovskaya ◽  
◽  
N.A. Kalyuzhny
Keyword(s):  
Mathematical Modeling ◽  
Comparative Analysis ◽  
Statistical Modeling ◽  
Information Technologies ◽  
Environmental Issues ◽  
Internet Technologies ◽  
Rostov Region ◽  
Initial Stage ◽  
Don River ◽  
Graphical Presentation

The work was carried out within the framework of the initial stage of the master's research related to the application of mathematical modeling and information technologies to the study of environmental problems of water bodies. The work presents the results of statistical modeling associated with the processing of data from two surveys: residents of the Rostov region and foreign residents. Based on the results of surveys carried out using Internet technologies, the authors make some conclusions about the attitude of residents to the problems under consideration. The proposed results are accompanied by graphical presentation in the form of diagrams, which greatly simplifies understanding. The results also make it possible to justify the next stage of the scientific research - modeling plastic in the Don River.

scholarly journals ДОСЛІДЖЕННЯ ЕНЕРГОЕФЕКТИВНОСТІ ОБЛАДНАННЯ ДЛЯ ЗМІШУВАННЯ СИПКИХ МАТЕРІАЛІВ

2019 ◽  
Vol 136 (4) ◽  
pp. 42-48
Author(s):  
О. П. Бурмістенков ◽  
Т. Я. Біла ◽  
В. В. Стаценко
Keyword(s):  
Mathematical Modeling ◽  
Comparative Analysis ◽  
Electric Drive ◽  
Bulk Materials ◽  
Energy Parameters ◽  
Motion Study ◽  
Theoretical Mechanics

The energy parameters determination of bulk materials mixing equipment. Methodology.  The  paper  used  methods  of  mathematical  modeling,  comparative  analysis  and research  of  electric  drive.  The  particles  motion  study  inside  the  mixer  was  performed  on  the  theoretical mechanics laws basis.

Study of the Process of Wastewater Treatment with Activated Caron from Dimethylamine and Dimethylformamide in their Joint Presence

2021 ◽  
Vol 25 (2) ◽  
pp. 18-22
Author(s):  
Yu.V. Solovyova ◽  
V.P. Yustratov ◽  
N.S. Golubeva ◽  
I.V. Vasiljeva ◽  
E.V. Nazimova
Keyword(s):  
Mathematical Modeling ◽  
Mass Transfer ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Aqueous Solutions ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Adsorption Column ◽  
Limiting Stage ◽  
Column Process

The regularities and mechanism of adsorption of dimethylformamide and dimethylamine by industrial activated carbon in their joint presence from aqueous solutions are considered. The characteristics of equilibrium adsorption, the limiting stage, and the mass transfer coefficient have been determined. The main parameters of the adsorption column process and the mode of continuous cleaning are calculated by the method of mathematical modeling.

A step forward on mathematical modeling of barium removal from aqueous solutions using seaweeds as natural cation exchangers: Batch and fixed-bed systems

2020 ◽  
Vol 401 ◽  
pp. 126019
Author(s):  
Natália C. Fontão ◽  
Fabíola V. Hackbarth ◽  
Diego A. Mayer ◽  
Luciana P. Mazur ◽  
Antônio Augusto U. de Souza ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Aqueous Solutions ◽  
Fixed Bed ◽  
Cation Exchangers

scholarly journals Analysis of gas composition in oil-filled faulty equipment with acetylene as the key gas

Energetika ◽  
2019 ◽  
Vol 65 (1) ◽  
Author(s):  
Oleg Shutenko
Keyword(s):  
Comparative Analysis ◽  
High Voltage ◽  
Analysis Data ◽  
Gas Analysis ◽  
Identification Accuracy ◽  
Fault Identification ◽  
Gas Composition ◽  
Dissolved Gas ◽  
Dissolved Gas Analysis ◽  
Identification Technique

The article presents results of oil-dissolved gas analysis for 239 units of high-voltage equipment with faults under which acetylene is the key gas. The analysis revealed 13 types of fault with acetylene as the key gas that are differentiated by values of the dissolved gas ratios, their concentrations, and fault nomographs. For each type of fault, graphic domains are plotted that, unlike the nomographs, allow taking into account a possible coordinate drift. A graphic domain based fault identification technique is introduced. The types of fault are briefly described, examples of their identification by different investigators given. Duval Triangle based comparative analysis of the equipment diagnosis data is performed. It is revealed that diagnoses made by different methods may differ significantly both from each other and from actual diagnoses. The results presented allow increasing fault identification accuracy via dissolved gas analysis data.

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