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：

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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。