Co-pyrolysis of Baiyinhua lignite and pine in an infrared-heated fixed bed to improve tar yield

被引：28

作者：

Li, Jiangang ^{[1
]}

Zhu, Jialong ^{[1
]}

Hu, Haoquan ^{[1
]}

Jin, Lijun ^{[1
]}

Wang, Dechao ^{[1
]}

Wang, Guijin ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Chem Engn, Inst Coal Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China

来源：

FUEL | 2020年 / 272卷

基金：

中国国家自然科学基金;

关键词：

Pine; Lignite; Fast co-pyrolysis; Feeding mode; Volatiles reaction; THERMOGRAVIMETRIC ANALYZER; ORGANIC-COMPOUNDS; BITUMINOUS COAL; CHAR STRUCTURE; BLENDED COAL; RANK COALS; BIOMASS; VOLATILES; HEMICELLULOSE; REACTIVITY;

D O I：

10.1016/j.fuel.2020.117739

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：

Co-pyrolysis of Baiyinhua lignite and pine was studied to reveal the synergistic effects in an infrared-heated fixed bed reactor. The effect of feeding mode, heating rate (0.5-20 degrees C/s), pyrolysis temperature (450-600 degrees C) and blending ratio on products distribution and tar compositions were investigated. The results show that the synergetic effects between lignite and pine vary with feeding modes, and the yield and compositions of the resultant tar suffer remarkable feed influence. The tar yield from feeding mode U (coal layer in upper layer) is 8.25 wt.% higher than others. Moreover, a columnar feeding mode was specifically designed and the pine was substituted by compressed pine to reveal the importance of void space among feeding particles for volatiles reaction. When the blending ratio is 1:1, the tar yield and the difference between experimental and calculated tar yield reach the maximum. The study on the effect of temperature and heating rate on co-pyrolysis show best copyrolysis behavior occurs at 550 degrees C at a heating rate of 10 degrees C/s.

引用

页数：9

共 43 条

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