A review on release and transformation behavior of alkali metals during high-alkali coal combustion

被引：4
作者：
Cao, Zhaoran [1 ]
Zhang, Jiakai [1 ,2 ,3 ]
Pan, Weiguo [1 ,2 ,3 ]
机构：
[1] Shanghai Univ Elect Power, Coll Energy & Mech Engn, Shanghai 200090, Peoples R China
[2] Key Lab Clean Power Generat & Environm Protect Tec, Shanghai 200090, Peoples R China
[3] Shanghai Noncarbon Energy Convers & Utilizat Inst, Shanghai 200240, Peoples R China
来源：
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS | 2024年 / 70卷
关键词：
Online measurement; Release behavior; Co-combustion; Ash deposition; Slagging; CHEMICAL LOOPING COMBUSTION; FLUIDIZED-BED COMBUSTION; VICTORIAN BROWN-COAL; OXY-FUEL COMBUSTION; MASS-SPECTROMETRIC INVESTIGATIONS; HIGH-TEMPERATURE GASIFICATION; UNDERSTANDING ASH DEPOSITION; SODIUM ADSORPTION CAPACITY; BURNING ZHUNDONG COAL; DILUTED NITRIC-ACID;
D O I：
10.1016/j.seta.2024.103966
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
High-alkali coal is abundant and can cope with the current energy supply and demand gap. However, the sustainable utilization of high-alkali coals is limited by their abundance of alkali metal species, which can lead to severe ash-related problems such as ash accumulation, slagging, and corrosion during its combustion in boilers. To explore the clean and sustainable utilization of high-alkali coal in coal-fired boilers, it is crucial to study the release and transformation behavior of alkali metals in the combustion process. First, this paper reviews the alkali metal measurement methods for high alkali-coal combustion processes. Further, the migration properties of alkali metals are summarized in terms of coal composition, temperature, and combustion atmosphere. Current co-combustion technologies for high-alkali coals with additives/other fuels and their effects on alkali metals are summarized and evaluated. Finally, the authors propose suggestions for the development of high-alkali coal combustion technologies based on current research on the behavior of alkali metals.
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页数：15
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