碳还原重晶石制备硫化钡的热力学研究  

Thermodynamics Analysis on Carbon Reducing of Barite to Barium Sulfide

作　　者：张媛媛[1] 陈晓香[1] 张虹[1] 

机构地区：[1]钟山职业技术学院,江苏南京210049

出　　处：《广东化工》2015年第1期46-47,51,共3页Guangdong Chemical Industry

摘　　要：运用热力学计算软件HSC对碳还原重晶石制备硫化钡的热力学进行了研究,计算了不同温度下反应体系可能发生的反应的标准摩尔焓变、吉布斯自由能和平衡常数,分析了各热力学参数与温度之间的关系,考察了反应温度、反应气氛、原料组成、原料杂质对硫酸钡转化率的影响。结果表明:迅速提高反应温度,避免反应物在低温停留时间,有利于提高硫化钡生成率;进入体系的O2含量、C含量应适量;原料中Si O2、Fe2O3和Al2O3等杂质会降低产物Ba S含量。The reaction entropy change, gibbs free energy, equilibrium constants of the reactions for carbon reducing of barite to barium sulfide were calculated by using HSC Chemistry 5.0 thermodynamic analysis software. The effect of temperation, oxygen concentration, BaSO4/C molar ratio and impurities （SiO2, Fe2O3, Al2O3） on equilibrium conversion were calculated as well. The results show that the rapid increasing of the reaction temperature, residence time of reactants to avoid in low temperature is conducive to the improvement of barium sulphide generation rate. The content of oxygen and BaSO4/C molar ratio should be appropriate. The impurities （SiO2, Fe203 and Al2O3） in raw materials reduce the content of BuS of products.

关 键 词：重晶石 硫化钡 HSC CHEMISTRY 热力学 

分 类 号：TQ132.1[化学工程—无机化工]