Experimental research of ignition and combustion processes of multi-component coal-water fuel droplets

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

A wide interest in coal-water suspensions in recent years is connected to the formation of significantly smaller volumes of sulfur, nitrogen and carbon oxides during their combustion in boiler furnaces in comparison with coal. One of the main problems hindering the widespread introduction of coal-water fuels in thermal power industry are large ignition delay times (up to 25-30 s). The aim of the work is experimental justification based on the results of studies of reduction possibility of ignition delay time of coal-water fuels due to addition of the second combustible component-isopropyl alcohol-in relatively small (from 3 to 5%) concentrations. Registration of heating, ignition and combustion processes was performed using a high-speed video camera (up to 3600 frames per second). The studies were performed in a medium heated to high temperatures (from 873 K to 1273 K) of oxidizer (still air). It was discovered that increase in the concentration of isopropyl alcohol to 5% by weight leads to reduction of the ignition delay time of droplets (with characteristic size of 2.5 mm) of the studied suspension by 26% in comparison with traditional coal-water fuel. Conclusions about the influence of mass concentration of isopropyl alcohol in the composition of coal-water fuel on the characteristics of the initiation of ignition and combustion processes are presented.

Язык оригиналаАнглийский
Название основной публикацииThermophysical Basis of Energy Technologies, TBET 2019
РедакторыGeniy Kuznetsov, Dmitry Feoktistov, Evgeniya Orlova
ИздательAmerican Institute of Physics Inc.
ISBN (электронное издание)9780735419636
DOI
СостояниеОпубликовано - 13 мар 2020
Событие2019 Thermophysical Basis of Energy Technologies - Tomsk, Российская Федерация
Продолжительность: 9 окт 201911 окт 2019

Серия публикаций

НазваниеAIP Conference Proceedings
Том2212
ISSN (печатное издание)0094-243X
ISSN (электронное издание)1551-7616

Конференция

Конференция2019 Thermophysical Basis of Energy Technologies
СтранаРоссийская Федерация
ГородTomsk
Период9.10.1911.10.19

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Цитировать

    Gvozdyakov, D. V., Zenkov, A. V., Kudrov, A. I., Gubin, V. E., & Yakovenko, K. V. (2020). Experimental research of ignition and combustion processes of multi-component coal-water fuel droplets. В G. Kuznetsov, D. Feoktistov, & E. Orlova (Ред.), Thermophysical Basis of Energy Technologies, TBET 2019 [020020] (AIP Conference Proceedings; Том 2212). American Institute of Physics Inc.. https://doi.org/10.1063/5.0000826