Characteristics of alcohol-coal-water slurries spraying
Электронный архив ТПУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Characteristics of alcohol-coal-water slurries spraying
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| Автор |
Gvozdyakov, Dmitry Vasilievich
Gubin, Vladimir Evgenievich Zenkov, Andrey Viktorovich |
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| Тематика |
spraying
coal-water fuel alcohols droplet velocity |
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| Описание |
The aim of this work is to substantiate the efficiency of ethyl or isoamyl alcohol application as the third component of coal-water fuels based on the results of experimental study of coaxial spraying. Studies of alcohols influence on spraying characteristics of coal-water fuels can rarely be found in the literature. Instantaneous fields of fuel droplets velocities in several cross-sections of the jet were determined using Particle Image Velocimetry method. Interferometric Particle Imaging method was used to determine droplets distribution by size in the jet of sprayed coal-water fuel. It was experimentally established that substitution of water (no more than 3 % by weight) in the composition of coal-water slurry by fairly typical alcohols leads to decrease in droplet velocities of alcohol-coal-water slurries in comparison with conventional coal-water fuel by 15-18 %. Concentration of sufficiently small fuel droplets (up to 200 microns) increases by 13.4±0.2 % and by 6.6±0.2 % during atomization of alcohol-coal-water slurries with addition of ethyl and isoamyl alcohol, respectively. Introduction of no more than 5 % by weight of the studied alcohols into the coal-water slurry will reduce the cost of fuel by 15-73 % in comparison with fuel oil. Influence of small additives of ethyl and isoamyl alcohol in the composition of coal-water fuel on spraying characteristics proves the possibility of efficient application of such three-component slurries in thermal power engineering. The results obtained are of practical significance, since they illustrate the possibility of reducing the ignition delay time for droplets of alcohol-coal-water slurries after they are sprayed in the furnaces of boiler units.
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| Дата |
2021-01-19T05:34:11Z
2021-01-19T05:34:11Z 2020 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Gvozdyakov D. V. Characteristics of alcohol-coal-water slurries spraying / D. V. Gvozdyakov, V. E. Gubin, A. V. Zenkov // Resource-Efficient Technologies. — 2020. — № 4. — [P. 30-39].
2405-6537 http://earchive.tpu.ru/handle/11683/64275 10.18799/24056537/2020/4/280 |
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| Язык |
en
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| Связанные ресурсы |
Resource-Efficient Technologies. 2020. № 4
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| Права |
Attribution-NonCommercial 4.0 International
Open access (info:eu-repo/semantics/openAccess) https://creativecommons.org/licenses/by-nc/4.0/ |
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| Формат |
application/pdf
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| Издатель |
Tomsk Polytechnic University
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| Источник |
Resource-Efficient Technologies
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