Citation: Zhang ZHANG, MA Ju-mei, LI Wei-cheng, ZHOU Qi, SHI Wen-ju, LI Huai-zhu, BAI Jin, BAI Zong-qing, LI Wen. Sintering characteristics of Wucaiwan coal ash and effect of different additives[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(3): 263-270. shu

Sintering characteristics of Wucaiwan coal ash and effect of different additives

Zhang ZHANG ^1,2 ,
MA Ju-mei ^1,2 ,
LI Wei-cheng ^1,2 ,
ZHOU Qi ^1,2 ,
SHI Wen-ju ^3,4 ,
LI Huai-zhu ³ ,
BAI Jin ^3,, ,
BAI Zong-qing ³ ,
LI Wen ³

1.
Clean Combustion and Flue Gas Purification Key Laboratory of Sichuan Province, Chengdu 611731, China
2.
Dongfang Boiler Group Co., Ltd., Zigong 643001, China
3.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
4.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: BAI Jin, stone@sxicc.ac.cn
Received Date: 20 September 2018
Revised Date: 7 December 2018

Fund Project: joint foundation of Natural Science Foundation of China and Xinjiang Province U1703252National Key Research and Development project of China 2017 YFB0602401The project was supported by joint foundation of Natural Science Foundation of China and Xinjiang Province (U1703252) and National Key Research and Development project of China (2017 YFB0602401)

Figures(8)

The effect of different additives on sintering characteristics of Wucaiwan coal ash was studied by TMA combined with XRD, in-situ hot stage microscope and FactSage thermodynamic software. The results show that the additives could improve the sintering problems of coal ash, but the effect of different additives on sintering characteristics is various. For example, the sintering temperature increases by 70 ℃ when 10% of the sand is added, but the sintering temperature does not increase by addition of coal gangue in the range of 0-15%. Further studies show that the variation of sintering characteristics can be attributed to the change of initial liquid phase temperature, compositions, content and decomposition temperature of sulfates in coal ash.
- additives,
- sintering temperature,
- sintering process,
- initial liquid phase,
- sulfate
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