Effect of B2O3 on the melting characteristics of model municipal solid waste incineration (MSWI) fly ash

被引：19

作者：

Gao, Jing ^{[1
]}

Dong, Changqing ^{[1
,2
]}

Zhao, Ying ^{[1
]}

Xing, Tong ^{[1
]}

Hu, Xiaoying ^{[1
]}

Wang, Xiaoqiang ^{[1
]}

机构：

[1] North China Elect Power Univ, Sch Renewable Energy, Natl Engn Lab Biomass Power Generat Equipment, Beijing 102206, Peoples R China

[2] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China

来源：

FUEL | 2021年 / 283卷

基金：

中国国家自然科学基金;

关键词：

B2O3; MSWI fly ash; Thermochemistry; Boron minerals; Melting; FACTSAGE THERMOCHEMICAL SOFTWARE; HEAVY-METAL; COAL; TEMPERATURE; GLASS; CRYSTALLIZATION; VITRIFICATION; VISCOSITY; POLLUTION; BEHAVIOR;

D O I：

10.1016/j.fuel.2020.119278

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper presents the melting characteristics of the multicomponent system of CaO-SiO2-Al2O3-Fe2O3-MgO under the influence of B2O3. Experiments on modelled ash fusibility were conducted in which mixtures of SiO2, Al2O3, CaO, Fe2O3, MgO, and B2O3 were investigated using a high-temperature stage microscope (HTSM) and ash fusion temperature (AFT) test. Thermodynamic calculations combined with X-ray diffraction (XRD) were used to obtain the reaction mechanisms that contributed to the melting process. The results showed that the temperature at which the particles agglomerated and melted decreased as the B2O3 content increased. B2O3 decreased the melting temperatures of the model ash samples, which could be related to the formation of the minerals Ca11B2Si4O22, Ca2B2O5, and CaB2O4 as well as the decrease of refractory minerals such as melilite.

引用

页数：7

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