焦炉煤气自重整炉气成分与温度变化规律研究

钢铁, 2009, 44(4): 11-0.

焦炉煤气自重整炉气成分与温度变化规律研究

钢铁研究总院先进钢铁流程及材料国家重点实验室，北京 100081

Study on Variation of Temperature and Composition of SelfReforming of Coke Oven Gas

CAO Chaozhen , GUO Peimin , ZHAO Pei , PANG Jianming

Keywords： coke oven gas;selfreforming;direct reduced iron

通过CH4H2COH2OCO2O2煤气体系的热力学模拟计算，对焦炉煤气自重整技术进行了研究。结果表明：高温、高CH4含量以及低压有利于焦炉煤气自重整。在配氧量14％，反应温度850～900 ℃，体系压力为0.3 MPa的条件下，对焦炉煤气进行自重整，则还原气平衡态组分中的氢气的体积分数可由60.0％提高到71.5％，CO体积分数可由8.0％提高到23.1％；气体的还原势为97.2％，还原气体总量约增加33％。

The technology of selfreforming of coke oven gas was studied by thermodynamics calculation of CH4H2COH2OCO2O2 system. The results show that higher temperature, lower pressure and higher CH4 content are advantage for the selfreforming of COG. With the reforming conditions of 850900 ℃, 0.3 MPa and 14% oxygen, the H2 content of equilibrium system can be enhanced from 60% to 71.5％ and 8% to 23.1% for CO. H2+CO/ H2O+CO2+H2+CO of equilibrium system is 97.2％ and the addition of equilibrium quantity of reducing gas is 33％．

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