The oxidation kinetics of chromium at high temperature:: The reactions of Cr/O2

被引：0

作者：

Cheng, JF ^{[1
]}

Xu, MH ^{[1
]}

Zeng, HC ^{[1
]}

Hu, S ^{[1
]}

Li, PS ^{[1
]}

Qiao, Y ^{[1
]}

Feng, R ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Wuhan 430074, Hubei, Peoples R China

来源：

ENERGY CONVERSION AND APPLICATION, VOL I AND II | 2001年

关键词：

chromium; chemical kinetics; equilibrium calculation; Cr/O-2;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The potential for regulation of toxic metals from coal-fired boilers is a concern for the electric utility industry. Such as chromium. is dependent on the valence of the metal. Cr (6+) is known to be more toxic than in the Cr (2+) and Cr (3+) forms and is a carcinogen. So chromium chemical kinetic mechanisms are needed to describe accurately chromium reaction products and their concentrations-time correlation. It is necessary to develop chromium chemical kinetics for application to real combustion system. The paper presented a simple model of chromium oxidation in Cr/O-2 system, and compared it with thermodynamic calculation. The results are consistent. At low temperature, Cr2O3 is the main product. With the increase of temperature, it begins to decompose and forms CrO2 and CrO3, and CrO3 is the main product instead of Cr2O3.

引用

页码：748 / 751

页数：4

共 9 条

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