Infrared heating and synergistic effects during fast co-pyrolysis of corn stover and high alkali coal

被引:13
|
作者
Li, Chenhao [1 ]
Liu, Zuohua [1 ]
Hu, Erfeng [1 ]
Yu, Jianglong [2 ,3 ]
Dai, Chongyang [1 ]
Tian, Yishui [4 ]
Yang, Yang [5 ]
Zeng, Yongfu [1 ]
机构
[1] Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China
[2] Monash Univ, Biol & Chem Engn, Clayton, Australia
[3] Monash Res Inst Sci & Technol, Suzhou Ind Pk, Suzhou, Peoples R China
[4] Minist Agr & Rural Affairs, Acad Agr Planning & Engn, Key Lab Energy Resource Utilizat Agr Residue, Beijing 100125, Peoples R China
[5] Aston Univ, Bioenergy Res Grp, EBRI, Birmingham B4 7ET, England
基金
中国国家自然科学基金;
关键词
Infrared heating; Co-pyrolysis; Synergistic effects; Carbon emission; Tar yield; BIOMASS PYROLYSIS; CHAR STRUCTURE; EARTH METALS; GASIFICATION; REACTIVITY; EVOLUTION; BEHAVIOR;
D O I
10.1016/j.psep.2023.09.033
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Infrared heating method aids in the investigation of the primary volatiles-volatile interactions during copyrolysis by minimizing the secondary reactions. In this study, characteristics and synergistic effects during the rapid co-pyrolysis of high alkali coal (HAC) and corn stover (CS) using infrared heating were systematically investigated. The co-pyrolysis liquid yield initially increased and then decreased with increasing the pyrolysis temperature. The synergistic effects clearly promoted the tar yield and quality. The co-pyrolysis tar yields increased with rising temperature, from 23.29 wt% at 500 degrees C to 28.87 wt% at 700 degrees C, before decreasing to 23.57 wt% at 800 degrees C. At 700 degrees C, the largest deviation was 63%. Moreover, the co-pyrolysis interaction had a maximal negative deviation of - 35% for CO2 mass at 700 degrees C, indicating that the co-pyrolysis of CS and HAC reduced carbon emissions. The tetracyclic and tricyclic aromatic hydrocarbons in PAHs were substantially reduced due to CS hydrogen radicals, and the quantities of the binary aromatic rings decreased by 50% with the increase in temperature. The presence of AAEMs in coal affected the bond breaking and reformation of molecular bonds within the tar components. Raman analysis and BET analyses suggested that AAEMs in HAC enhanced the reactivity of char. The interaction between the volatile of CS and HAC increased the amount of ammonia carbon and the number of active sites.
引用
收藏
页码:812 / 821
页数:10
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