氢基竖炉用耐火材料服役环境模拟及设计  

Service Environment Simulation and Design of Refractory for Hydrogen-Based Shaft Furnace

作　　者：于国瀚 崔竞文 赵飞 徐恩霞[2] 何志军[3] 王恩会 侯新梅[1] YU Guohan;CUI Jingwen;ZHAO Fei;XU Enxia;HE Zhijun;WANG Enhui;HOU Xinmei(Innovation Research Institute for Carbon Neutrality,University of Science and Technology Beijing,Beijing 100083,China;School of Material Science and Engineering,Zhengzhou University,Zhengzhou 450002,China;School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China)

机构地区：[1]北京科技大学碳中和创新研究院,北京100083 [2]郑州大学材料科学与工程学院,郑州450052 [3]辽宁科技大学材料与冶金学院,辽宁鞍山114051

出　　处：《硅酸盐学报》2023年第3期619-627,共9页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金资助项目(52025041,51974021);中央高校基本科研业务费资助项目(FRF–TP–20–02C2)。

摘　　要：随着氢冶金技术及氢基竖炉的发展与推广,对其关键部位用耐火材料提出更高要求,明晰耐火材料服役环境特点并进行针对性的性能设计尤为关键。利用Ansys软件对氢基竖炉还原段内部及壁面服役过程中的温度、压强以及气相浓度分布进行数值模拟研究,并利用FactSage软件计算传统耐火材料典型组分在服役状态下的热力学稳定性。结果表明,高温高压服役区域集中在进气口附近,H_(2)O集中在炉顶及炉底区域。提高入炉气体温度对炉内温度场有一定影响,对压强场及气相组成基本无影响。传统耐火材料典型组分中Al2O3、ZrO_(2)、镁铝尖晶石、六铝酸钙及TiO_(2)的热力学稳定性较强,可作为炉壁耐火材料组分,AlN或TiC可作为添加剂提高相关性能,同时避免引入SiO_(2)、MgO、CaO、Cr_(2)O_(3)、Fe_(2)O_(3)、SiC、Si_(3)N_(4)、B4C、BN杂质组分。本研究可为氢基竖炉用耐火材料服役环境仿真及材料组分选择提供理论基础和方法支持。With the development of hydrogen metallurgy and hydrogen-based shaft furnace,the corresponding refractories for critical parts have higher requirements.Understanding the service environment characteristic and implementing targeted design for the performance are thus particularly important for refractories.In this paper,the temperature,pressure and gas phase concentration distribution for interior and wall surface in reduction domain of hydrogen-based shaft furnace were simulated by a software named Ansys.Also,the thermodynamic stability of typical components of traditional refractory during the process was calculated by FactSage.The results show that the high-temperature and high-pressure service area is concentrated near the gas inlet,while H_(2)O is concentrated in the top and bottom areas of the furnace.Increasing the temperature of inlet gas has a certain effect on the temperature field,but has little effect on the pressure field and gas phase composition.Among the typical components of conventional refractory,Al2O3,ZrO_(2),magnesium aluminum spinel,calcium-hexaluminate and TiO_(2)exhibit a thermodynamic stability,which can be used as potential refractory components of furnace walls.Al N or Ti C can be used as additive materials to improve the relevant properties of these refractories.In addition,some impurity components as SiO_(2),MgO,CaO,Cr_(2)O_(3),Fe_(2)O_(3),SiC,Si3NN,B4C and BN can be eliminated.This study can provide a theoretical basis and methodological support for the service environment simulation and material component selection of refractory for a hydrogen-based shaft furnace.

关 键 词：氢基竖炉 耐火材料 数值模拟 热力学计算 

分 类 号：TQ17[化学工程—硅酸盐工业]