Impacts of Organic Structures and Inherent Minerals of Coal on Soot Formation during Pyrolysis

被引：14

作者：

Dong, He-Ming ^{[1
]}

Du, Qian ^{[1
]}

Li, Dun ^{[1
]}

Cui, Zhao-Yang ^{[1
]}

Gao, Jian-Min ^{[1
]}

Wu, Shao-Hua ^{[1
]}

机构：

[1] Harbin Inst Technol, Inst Combust Engn, Harbin 150001, Heilongjiang, Peoples R China

来源：

ENERGIES | 2019年 / 12卷 / 23期

关键词：

soot; coal pyrolysis; tar; FTIR; SECONDARY REACTIONS; BROWN-COAL; GASIFICATION; TAR; KINETICS; ALKALI; CARBON; FTIR; REACTIVITY; CONVERSION;

D O I：

10.3390/en12234410

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：

The pyrolysis of four pairs of raw and acid-washed coals under N-2 atmosphere was carried out in a drop tube reactor at 1250 degrees C. The results show that both organic structures and metal elements have an important influence on the formation of soot. The total area of aromatic and aliphatic hydrogen absorption bands is positively correlated with soot yield. Aromatic compounds have a greater contribution to soot and tar formation. The absorption band area of oxygen structures in coal FTIR spectra is negatively correlated with the soot conversion rate of tar. During pyrolysis, metal substances in coal can catalyze the dehydrogenation and deoxygenation of tar, reduce the content and stability of the aliphatic compound, and catalyze aromatic ring rupturing. More importantly, gasified metals can inhibit the polymerization reaction of aromatic compounds.

引用

页数：16

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