一元和三元型含水硫铝酸钙热力学研究  

Study of thermodynamics of 4-calcium 2-aluminium sulfide 10-oxide 12-hydrate and 6-calcium 2-aluminium sulfide 18-oxide 6-hydrate

作　　者：兰军[1] 吴贤熙[1] 解元承[1] 

机构地区：[1]贵州大学化学工程学院,贵州贵阳550003

出　　处：《应用化工》2007年第10期961-963,共3页Applied Chemical Industry

基　　金：贵州省科学技术基金;黔科合J字[2005]2097号

摘　　要：根据温元凯算法的主体思想,计算了一元和三元型硫铝酸钙的Gibbs自由能和其反应Gibbs自由能分别为G3oCaO.Al2O3.CaSO4.12H2O=-8 984.805 kJ/mol和G3oCaO.Al2O3.3CaSO4.6H2O=-10 076.685 kJ/mol。铝酸钠溶液脱硫反应的Gibbs自由能△G1o=-195.265 kJ/mol,△G2o=-187.725 kJ/mol,两式中△Gor<<0。由计算结果可知,有望实现以生成三元型硫铝酸钙的形式脱硫,使脱硫的效率提高3倍,且降低Al2O3损失。Using principal ideal of Wenyuankai arithmetic estimated the Gibbs free energies of the 4-calcium 2-aluminium sulfide 10-oxide 12-hydrate and 6-calcium 2-aluminium sulfide 18-oxide 6-hydrate ,and the Gibbs free energies of their reaction. G3CaO.Al2O3.CaSO4.12H2O^o = - 8 984. 805 kJ/mol, GCaO.Al2O3.CaSO4.12H2O^o = - 10 076. 685 kJ/mol. The Gibbs free energies of reaction of desulfurization with sodium aluminates was computed, △ G1^0 = - 195. 265 kJ/mol, △ G2^0 = - 187. 725 kJ/mol, because of A Gr^0 〈〈 0, the possibility of reaction of desulfurization in the form of 6-calcium 2-aluminium sulfide 18-oxide 6-hydrate is great. The efficiency of desulfurization will be increased to triplication, and the loss of alumina will be reduced.

关 键 词：一元型含水硫铝酸钙 三元型含水硫铝酸钙 Gibbs自由能 脱硫 

分 类 号：TF803.211[冶金工程—有色金属冶金] TB131[理学—物理]