摘要
采用HSC Chemistry软件对硫酸铝在不同气氛下的分解过程进行热力学计算,并将软件计算的结果与理论推导值进行比较,两种算法的结果相近,说明可使用HSC Chemistry软件计算此类热力学过程,且计算更为方便.不同气氛下热力学计算结果表明:氧化气氛下,硫酸铝最难分解,起始分解温度高达800℃;H2还原及无烟煤弱还原气氛下,分解反应较易进行,H2还原气氛下常温下就能进行,而无烟煤弱还原气氛下,起始分解温度为60℃.同时,从热力学角度考察了分解过程中中间产物Al2S3存在的可能性,热力学分析表明,还原气氛下,硫酸铝分解过程中存在中间产物Al2S3,氧化气氛下没有Al2S3生成.
The decomposition process of aluminum sulfate in different atmosphere was thermodynamically calculated by HSC Chemistry software and the results were compared with the theoretical results. The results of the two algorithms were similar, indicating that this kind of thermodynamic process could be calculated by HSC Chemistry software, and the calculation was more convenient. The results of thermodynamic calculation in different atmospheres showed that aluminum sulfate is the most difficult to decompose in oxidized atmosphere, and the initial decomposition temperature is as high as 800 ℃. The decomposition reaction is easy to take place in H2 reduction and anthracite weak reduction atmospheres, which the initial decomposition temperature is room temperature and 60 ℃, respectively. At the same time, the possibility of the existence of the intermediate product Al2S3 in the decomposition process was investigated from the thermodynamic perspective. The thermodynamic analysis showed that the intermediate product Al2S3 existed in the decomposition process of aluminum sulfate under the reduction atmosphere, and no Al2S3 was generated under the oxidation atmosphere.
作者
郑光亚
陈正杰
辜芳
王伟杰
师一博
夏举佩
刘成龙
ZHENG Guangya;CHEN Zhengjie;GU Fang;WANG Weijie;SHI Yibo;XIA Jupei;LIU Chenglong(Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,Yunnan,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Faculty of Chemical Engineering,Ningxia Normal University,Guyuan 756000,Ningxia,China)
出处
《化学研究》
CAS
2019年第3期248-253,共6页
Chemical Research
基金
国家自然科学基金(21566018)
宁夏回族自治区重点研发计划项目(2018BEE03021)
