Bonding mechanism of binder and low-rank coal during carbonization

WANG Ming-yi; CHANG Zhi-wei; LIU Yue-hua; SHANGGUAN Ju; DU Wen-guang; MA Rui; WANG Qi; LIU Jun-jie; LIU Shou-jun; YANG Song

doi:10.1016/S1872-5813(22)60062-8

Volume 50 Issue 12

Dec. 2022

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Article Navigation > Journal of Fuel Chemistry and Technology > 2022 > 50(12): 1564-1572

WANG Ming-yi, CHANG Zhi-wei, LIU Yue-hua, SHANGGUAN Ju, DU Wen-guang, MA Rui, WANG Qi, LIU Jun-jie, LIU Shou-jun, YANG Song. Bonding mechanism of binder and low-rank coal during carbonization[J]. Journal of Fuel Chemistry and Technology, 2022, 50(12): 1564-1572. doi: 10.1016/S1872-5813(22)60062-8

Citation:

WANG Ming-yi, CHANG Zhi-wei, LIU Yue-hua, SHANGGUAN Ju, DU Wen-guang, MA Rui, WANG Qi, LIU Jun-jie, LIU Shou-jun, YANG Song. Bonding mechanism of binder and low-rank coal during carbonization[J]. Journal of Fuel Chemistry and Technology, 2022, 50(12): 1564-1572. doi: 10.1016/S1872-5813(22)60062-8

Citation:

WANG Ming-yi, CHANG Zhi-wei, LIU Yue-hua, SHANGGUAN Ju, DU Wen-guang, MA Rui, WANG Qi, LIU Jun-jie, LIU Shou-jun, YANG Song. Bonding mechanism of binder and low-rank coal during carbonization[J]. Journal of Fuel Chemistry and Technology, 2022, 50(12): 1564-1572. doi: 10.1016/S1872-5813(22)60062-8

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Bonding mechanism of binder and low-rank coal during carbonization

doi: 10.1016/S1872-5813(22)60062-8

WANG Ming-yi^{1, 2
,},
CHANG Zhi-wei^{2, 3
,},
LIU Yue-hua^{2, 3
,},
SHANGGUAN Ju^{2, 3
,},
DU Wen-guang^{2, 3
,},
MA Rui^{2, 3},
WANG Qi^{2, 3
,},
LIU Jun-jie^{2, 3},
LIU Shou-jun^{1, 2, 3
,
,},
YANG Song^{1, 2
,
,}

1.
College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, China
2.
Shanxi Engineering Center of Civil Clean Fuel, Taiyuan University of Technology, Taiyuan 030024, China
3.
State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China

Funds: The project was supported by Shanxi Province Basic Research Plan (202103021223087), Shanxi Province Science and Technology Achievement Transformation Guidance Special Project (202104021301052), the National Natural Science Foundation of China (22169017) and sponsored by Mettler Toledo and Taiyuan Green Coke Energy Co., Ltd. (China).

More Information

Corresponding author: E-mail: 13303460889@163.com; yangsong@tyut.edu.cn
Received Date: 2022-04-30
Accepted Date: 2022-06-04
Rev Recd Date: 2022-06-01

Available Online: 2022-09-23

Publish Date: 2022-12-28

Abstract

Abstract

Low-rank coal is rarely used in the industry of carbonized briquette due to its poor cohesiveness. In order to replace lump coal and utilize low-rank pulverized coal as much as possible in a carbonized briquette process, washing oil residue (WOR) was used as an enhanced binder to enhance the bonding strength of resulted carbonized briquette. The effects of blending ratio and carbonization temperatures on binding strength were investigated, and moreover, a reasonable bonding mechanism was deduced. The results showed that the best crushing strength was obtained when the weight ratio of WOR and low-rank coal is 3∶7 at 800 °C, and its crushing strength of M₂₅ (M₂₅) can reach to 97%, while the thermoplastic properties of WOR is thought to be responsible for the obtained good crushing strength, where WOR can be softened and coated on the surface of coal particles during carbonization, and then a coal-binder interface can be formed, resulting in the loose inert coal particles can be combined and the strength of coke is improved significantly.
- low-rank coal,
- washing oil residue,
- carbonization,
- bonding mechanism

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References(35)

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