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Gas Liberation in the High-Temperature Isothermal Holding of Coke Residues
Coke and Chemistry ( IF 0.4 ) Pub Date : 2020-04-27 , DOI: 10.3103/s1068364x2001007x
S. G. Stakheev , A. Ya. Eremin , E. G. Zolotareva

Abstract

The dynamics of nitrogen, hydrogen, and carbon-monoxide liberation in the isothermal holding of coke residues from G, Zh, KO, KS, and T coal at 1000°C is studied in experiments after heating at 10°C/min. The gas liberation in isothermal holding continues throughout the experiment (2 h). The rate of gas liberation declines exponentially in the course of holding. The rates of H2 and CO emission are related to the clinkering properties of the coal (the plastic-layer thickness) on the basis of a second-order polynomial; for the rate of nitrogen liberation, this relationship is linear. In isothermal holding, the mass loss of the coke residue may be 0.60–1.00% after 60 min and 0.85–1.38% after 120 min. The corresponding gas yields are 25–30 and 35–42 m3/t of coke. The gas consists of 76.8–93.0 vol % hydrogen, 1.9–11.7 vol % nitrogen, and 4.1–14.9 vol % carbon monoxide.


中文翻译:

高温等温焦炭残留物中的气体释放

摘要

在以10°C / min的速度加热实验后,研究了G,Zh,KO,KS和T煤的焦炭残渣在等温保持状态下氮,氢和一氧化碳的释放动力学。在整个实验过程中(2小时),等温保温中的气体释放持续进行。气体的释放速度在保持过程中呈指数下降。基于二阶多项式,H 2和CO的排放速率与煤的熟料特性(塑料层厚度)有关。对于氮的释放速率,这种关系是线性的。在等温保温中,60分钟后焦炭残余物的质量损失可能为0.60–1.00%,而120分钟后可能为0.85–1.38%。相应的气体产量为25–30和35–42 m 3/吨可乐。该气体由76.8–93.0体积%的氢气,1.9–11.7体积%的氮气和4.1–14.9体积%的一氧化碳组成。
更新日期:2020-04-27
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