Modeling and assessment of the flow and air pollutants dispersion during chemical reactions from power plant activities

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-11-28 DOI:10.1515/ijnsns-2020-0045

A. Issakhov, Aidana Alimbek

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Abstract

Abstract In this work, numerical modeling and assessment of the dispersion of pollutants as a result of a chemical reaction from the activities of the Ekibastuz SDPP-1 was considered. The simulation was done on a valid thermal power plant. At the same time, to model the dispersion of pollutants NO, NO2 and CO were used, and the products NO2, HNO3 and CO2 from a chemical reaction with oxygen were also considered. The validation of the mathematical model, taking into account the chemical reaction, was carried out using several test problems and the obtained numerical results were compared with experimental data and numerical data of other authors. So in this work, estimates of the concentration level were given, both for pollutants and for products that were formed from a chemical reaction. As a result, the mass fractions of concentration and product were determined during a chemical reaction for various distances from chimneys. According to the data obtained, it can be noticed that, under the influence of diffusion, concentrations and products during a chemical reaction spread wider in width and due to this diffusion, the concentration level with an increase in the distance from the chimneys is lower. So, according to the data obtained, it is possible to assess the choice of the optimal distance of the thermal power plant from residential areas, at which the concentration of emissions and products from a chemical reaction will remain at a safe level.

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发电厂化学反应过程中流量和空气污染物扩散的建模和评估

摘要在这项工作中，考虑了Ekibastuz SDPP-1活性化学反应产生的污染物扩散的数值建模和评估。仿真是在一个有效的火电厂上进行的。同时，为了模拟污染物NO、NO2和CO的分散，还考虑了与氧气化学反应产生的产物NO2、HNO3和CO2。考虑到化学反应，使用几个测试问题对数学模型进行了验证，并将获得的数值结果与实验数据和其他作者的数值数据进行了比较。因此，在这项工作中，对污染物和化学反应形成的产物的浓度水平进行了估计。结果，在与烟囱不同距离的化学反应过程中，确定了浓度和产物的质量分数。根据获得的数据，可以注意到，在扩散的影响下，化学反应过程中的浓度和产物在宽度上扩散得更宽，并且由于这种扩散，随着与烟囱距离的增加，浓度水平更低。因此，根据获得的数据，可以评估火力发电厂与居民区的最佳距离的选择，在该距离下，化学反应产生的排放物和产物的浓度将保持在安全水平。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.