Gas-Modified Pyrolysis Coke for in Situ Catalytic Cracking of Coal Tar

被引：37
|
作者：
Lei, Zhang [1 ,2 ,4 ]
Hao, Shu [3 ]
Lei, Zhang [1 ,2 ,4 ]
Yang, Jia [1 ]
机构：
[1] Xian Univ Sci & Technol, Sch Geol & Environm, Xian 710054, Peoples R China
[2] Minist Nat Resources, Key Lab Coal Resources Explorat & Comprehens Util, Xian 710021, Peoples R China
[3] Xian Univ Technol, Sch Water Resources & Hydroelect Engn, Xian 710048, Peoples R China
[4] China Natl Heavy Machinery Res Inst Co Ltd, Xian 710032, Peoples R China
来源：
ACS OMEGA | 2020年 / 5卷 / 25期
基金：
中国国家自然科学基金;
关键词：
STEAM; ADDITIVES; KINETICS; LIGNITE; CARBON; CHAR;
D O I：
10.1021/acsomega.0c00055
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Modified pyrolysis coke can be used as a catalyst for tar cracking. In this paper, pyrolysis coke was used as a carrier for modification by using gases (H2O, CO2, and NH3), and the optimal modified gas was selected. On the basis of this, pyrolysis coke with different modified flow rates, temperatures, and times were prepared to catalyze the cracking of tar. The effect of gas-modified pyrolysis coke on tar cracking products was studied. Also, pyrolysis coke was characterized by Fourier-transform infrared spectroscopy, Brunauer-Emmett-Teller analysis, and scanning electron microscopy. The results show that the optimal gas is H2O, and the optimal preparation conditions are 450 mL/min, 650 degrees C, and 60 min. The pyrolysis coke catalyst under the optimal conditions has the best cracking effect on tar. Also, the gas and tar yields have been further improved.
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页码：14911 / 14923
页数：13
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