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Effect of Cu(NO3)2 and Cu(CH3COO)2 Activating Additives on Combustion Characteristics of Anthracite and Its Semi-Coke Full article

Journal Energies
ISSN: 1996-1073
Output data Year: 2020, Volume: 13, Number: 22, Article number : 5926, Pages count : 14 DOI: 10.3390/en13225926
Tags anthracite; semi-coke; ignition; combustion; activating additive; copper acetate; copper nitrate
Authors 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
Affiliations
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

Funding (2)

1 Council for Grants of the President of the Russian Federation НШ-2513.2020.8
2 Ministry of Science and Higher Education of the Russian Federation 075-00268-20-02 (0718-2020-0040)(АААА-А20-120070890064-3)

Abstract: 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.
Cite: Larionov K. , Slyusarskiy K. , Tsibulskiy S. , Tolokolnikov A. , Mishakov I. , Bauman Y. , Vedyagin A. , Gromov A.
Effect of Cu(NO3)2 and Cu(CH3COO)2 Activating Additives on Combustion Characteristics of Anthracite and Its Semi-Coke
Energies. 2020. V.13. N22. 5926 :1-14. DOI: 10.3390/en13225926 WOS Scopus РИНЦ AN OpenAlex
Files: Full text from publisher
Dates:
Submitted: Oct 28, 2020
Accepted: Nov 11, 2020
Published online: Nov 13, 2020
Identifiers:
Web of science: WOS:000594129800001
Scopus: 2-s2.0-85106661027
Elibrary: 46110180
Chemical Abstracts: 2020:2509252
OpenAlex: W3101105327
Citing:
DB Citing
Web of science 6
Scopus 8
Elibrary 12
OpenAlex 9
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