A Model for Predicting Arsenic Volatilization during Coal Combustion Based on the Ash Fusion Temperature and Coal Characteristic

被引：6

作者：

Zhao, Bo ^{[1
]}

Chen, Geng ^{[1
]}

Xiong, Zijiang ^{[1
]}

Qin, Linbo ^{[1
]}

Chen, Wangsheng ^{[1
]}

Han, Jun ^{[2
]}

机构：

[1] Wuhan Univ Sci & Technol, Hubei Prov Key Lab Efficient Utilizat & Agglomera, Wuhan 430081, Peoples R China

[2] Wuhan Univ Sci & Technol, Ind Safety Engn Technol Res Ctr Hubei Prov, Wuhan 430081, Peoples R China

来源：

ENERGIES | 2021年 / 14卷 / 02期

关键词：

coal combustion; arsenic; ash fusion temperature (AFT); vaporization; model;

D O I：

10.3390/en14020334

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：

Arsenic emission from coal combustion power plants has attracted increasing attention due to its high toxicity. In this study, it was found that there was a close relationship between the ash fusion temperature (AFT) and arsenic distribution based on the thermodynamic equilibrium calculation. In addition to the AFT, coal characteristics and combustion temperature also considerably affected the distribution and morphology of arsenic during coal combustion. Thus, an arsenic volatilization model based on the AFT, coal type, and combustion temperature during coal combustion was developed. To test the accuracy of the model, blending coal combustion experiments were carried out. The experimental results and published data proved that the developed arsenic volatilization model can accurately predict arsenic emission during co-combustion, and the errors of the predicted value for bituminous and lignite were 2.3-9.8%, with the exception of JingLong (JL) coal when combusted at 1500 degrees C.

引用

页数：11

共 39 条

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