Activation of anthracite combustion by copper acetate:mechanism,effect of particle size and introduction method
K.B.Larionov1
I.V.Mishakov2
N.I.Berezikov1
A.S.Gorshkov1
A.Zh.Kaltaev3
K.V.Slyusarskiy1
A.S.Ruban3
A.A.Vedyagin2
1.Energy Engineering School,National Research Tomsk Polytechnic University,Lenin Ave.,30,Tomsk 634050,Russia;Gorbachev Kuzbass State Technical University,Kemerovo 650000,Russia2.Boreskov Institute of Catalysis SB RAS,Novosibirsk 630090,Russia3.Energy Engineering School,National Research Tomsk Polytechnic University,Lenin Ave.,30,Tomsk 634050,Russia
摘要：This paper addressed the effect of copper acetate on the combustion characteristics of anthracite depending on the fractional composition of fuel and additive introduction method.Anthracite was impregnated with 5 wt％of Cu(CH3COO)2 by mechani-cal mixing and incipient wetness impregnation.Four anthracite samples of different fraction with d＜0.1 mm,d=0.1-0.5 mm,d=0.5-1.0 mm,and d=1.0-2.0 mm were compared.According to EDX mapping,incipient wetness impregnation provides a higher dispersion of the additive and its uniform distribution in the sample.The ignition and combustion characteristics of the modified anthracite samples were studied by thermal analysis and high-speed video recording of the processes in a combustion chamber(at heating medium temperature of 800℃).It was found that copper acetate increases anthracite reac-tivity,which was evidenced by decreased onset temperature of combustion(△Ti)by 35-190℃and reduced ignition delay time(△τi)by 2.1-5.4 s.Copper acetate reduces fuel underburning(on average by 70％)in the ash residue of anthracite and decreases the amount of CO and NOx in gas-phase products(on average by 18.5％and 20.8％,respectively).The mechanism for activation of anthracite combustion by copper acetate is proposed.
机标关键词：combustionmechanismparticleacetatecoppermethodactivationanthracite
论文发表日期：2023-02-28
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：18( 142-159 )
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