Nitrogen migration regarding the addition of iron-Ni composite additives during coal pyrolysis

被引：0

作者：

Liu Y. ^{[1
,2
]}

Shangguan J. ^{[1
,2
]}

Liu S. ^{[1
,2
,3
]}

Yang S. ^{[2
,3
]}

Du W. ^{[1
,2
]}

机构：

[1] Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan

[2] Shanxi Engineering Center of Civil Clean Fuel, Taiyuan

[3] College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 01期

关键词：

Coal pyrolysis; Iron and nickel composite additive; Nitrogen migration; Nitrogen oxide;

D O I：

10.16085/j.issn.1000-6613.2020-0478

中图分类号：

学科分类号：

摘要：

In order to reduce NOx emissions in the coal combustion process, the pyrolysis experiments of coal and metal additives (FeCl3, NiCl2) were carried out in a tube furnace. The effects of additive loading, pyrolysis temperature, and adding method of additives on nitrogen migration and N2 yield were investigated, and the mechanism of compound additives was discussed. The results indicate that as the loading of the additive increases, the nitrogen removal rate and N2 yield tend to stabilize after increasing, and the loading is preferably 0.8% Fe and 1.0% Ni. In the pyrolysis temperature of 700-1000℃, the nitrogen removal rate and N2 yield increase with the increase of pyrolysis temperature. By swelling treatment of coal and the addition of composite additives, the nitrogen removal rate and N2 yield are higher than untreated coal samples. In the process of nitrogen migration during the coal pyrolysis, iron-based additives and nickel-based additives complement each other. The addition of iron-based additives increases the activity of nickel-based additives to make up for the disadvantages of single additives. Compared with the single additive, the compound additive has a stronger nitrogen removal effect and the N2 yield reaches a maximum of 39%. The Fe-Ni composite additive has a better catalytic effect on the conversion of N-5 to N2 in raw coal, as the composite additive has a stronger catalytic effect on the internal hydrogen transfer and ring opening of pyrrole. This research can provide theoretical and experimental basis for the clean utilization of coal. © 2021, Chemical Industry Press Co., Ltd. All right reserved.

引用

页码：164 / 172

页数：8

共 41 条

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