水合物法高炉煤气脱除二氧化碳的热力学模型研究  

Research on thermodynamic model for the removal of carbon dioxide in blast furnace gas by hydrate method

作　　者：林青山 王静松 薛庆国 原小涛[2] 潘玉柱 LIN Qingshan;WANG Jingsong;XUE Qingguo;YUAN Xiaotao;PAN Yuzhu(State Key Laboratory of Advanced Metallurgy;School of Chemistry and Biological Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]北京科技大学化学与生物工程学院,北京100083

出　　处：《有色金属科学与工程》2018年第5期1-6,共6页Nonferrous Metals Science and Engineering

基　　金：钢铁冶金新技术国家重点实验室自主研发重点课题项目(41614015)

摘　　要：提出了将水合物法应用于高炉煤气的脱碳提质.选择正四丁基溴化铵(TBAB)作为热力学促进剂,并基于Chen-Guo水合物热力学模型,对高炉煤气在TBAB溶液中水合物的生成压力进行计算预测.将模型用于含高炉煤气部分组分+TBAB体系的水合物的生成压力计算,计算结果与文献中实验值进行比较,平均相对误差在3%～16%左右;而对不同浓度组成的CO2+CO+N2+H2+水体系的水合物生成压力的计算结果比较,平均相对误差在7.5%～11.7%左右;用压力探索法测得高炉煤气+TBAB体系水合物的相平衡实验数据,并与计算值进行比较,平均相对误差为16.6%,表明模型在一定程度上可预测高炉煤气在TBAB溶液中水合物的相平衡条件.The application of hydrate method to the removal of carbon dioxide in blast furnace gas was proposed. Tetra-n-butyl ammonium bromide （TBAB） was selected as the thermodynamic promoter. Chen-Guo hydrate thermodynamic model was applied to calculate and predict the pressure of gas hydrate in TBAB solution. The model was used to calculate the pressure of hydrate containing part of blast furnace gas ＋TBAB, with the average relative error between the calculation result and experimental value in the literature being about 3 %-16 %. The average relative error between calculation results of the hydrate pressure of CO2＋CO＋N2＋ H2 ＋water of different concentrations and values in the literature was 7.5 %-11.7 %. Comparing the experimental data of blast furnace gas ＋TBAB measured by pressure exploration with the calculation results, we found that the average relative error was 16.6 %, which indicated that the model could predict the phase equilibrium condition of blast furnace gas in TBAB solution.

关 键 词：水合物 高炉煤气 二氧化碳脱除 TBAB 热力学模型 

分 类 号：TF531[冶金工程—钢铁冶金]