Effect of Cu(NO3)2 and Cu(CH3COO)2 Activating Additives on Combustion Characteristics of Anthracite and Its Semi-Coke
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Energies
ISSN: 1996-1073
|
| Вых. Данные |
Год: 2020,
Том: 13,
Номер: 22,
Номер статьи
: 5926,
Страниц
: 14
DOI:
10.3390/en13225926
|
| Ключевые слова |
anthracite; semi-coke; ignition; combustion; activating additive; copper acetate; copper nitrate |
| Авторы |
Larionov Kirill
1,2
,
Slyusarskiy Konstantin
1,2
,
Tsibulskiy Svyatoslav
1
,
Tolokolnikov Anton
1
,
Mishakov Ilya
2,3
,
Bauman Yury
2,3
,
Vedyagin Aleksey
2,3
,
Gromov Alexander
2
|
| Организации |
| 1 |
School of Energy & Power Engineering, National Research Tomsk Polytechnic University
|
| 2 |
Laboratory of Catalysis and Processing of Hydrocarbons, National University of Science and Technology “MISIS”
|
| 3 |
Department of Materials Science and Functional Materials, Boreskov Institute of Catalysis SB RAS
|
|
Информация о финансировании (2)
|
1
|
Совет по грантам Президента Российской Федерации
|
НШ-2513.2020.8
|
|
2
|
Министерство науки и высшего образования Российской Федерации
|
075-00268-20-02 (0718-2020-0040)(АААА-А20-120070890064-3)
|
The process of anthracite and its semi-coke combustion in the presence of 5 wt.% (in terms of dry salt) additives of copper salts Cu(NO3)2 and Cu(CH3COO)2 was studied. The activating additives were introduced by an incipient wetness procedure. The ignition and combustion parameters for coal samples were examined in the combustion chamber at the heating medium temperatures (Tg) of 600–800 °C. The composition of the gaseous combustion products was controlled using an on-line gas analyzer. The fuel modification with copper salts was found to reduce the ignition delay time on average, along with a drop in the minimum ignition temperature Tmin by 138–277 °C. With an increase in Tg temperature, a significant reduction in the ignition delay time for the anthracite and semi-coke samples (by a factor of 6.7) was observed. The maximum difference in the ignition delay time between the original and modified samples of anthracite (ΔTi = 5.5 s) and semi-coke (ΔTi = 5.4 s) was recorded at a Tg temperature of 600 °C in the case of Cu(CH3COO)2. The emergence of micro-explosions was detected at an early stage of combustion via high-speed video imaging for samples modified by copper acetate. According to the on-line gas analysis data, the addition of copper salts permits one to reduce the volume of CO formed by 40% on average, providing complete oxidation of the fuel to CO2. It was shown that the introduction of additives promoted the reduction in the NOx emissions during the combustion of the anthracite and semi-coke samples.