生物质直接还原铁氧化物能力的热力学研究
Thermodynamic Study on the Ability of Biomass to Directly Reduce Iron Oxides
孙贯永 1伊山廷 2梁东东 1袁朝新 1刘琦 1史志胜 1韩少奇1
作者信息
- 1. 矿冶科技集团有限公司,北京 100160
- 2. 山东金创金银冶炼有限公司,山东 烟台 265600
- 折叠
摘要
生物质在炼铁领域的应用有助于减少CO2 排放.构建生物质与Fe2O3 直接反应体系的最小吉布斯自由能法热力学平衡模型,以 8 种生物质为还原剂,分析Fe2O3 物质量对体系指标的影响.结果表明,根据产物类型,还原过程分为 5 个阶段.第 1 阶段和第 2 阶段的金属化率均为 100%,第 3 阶段的金属化率逐渐降低到0%.第3阶段,平衡态H2 物质量与平衡态H2+H2O物质量的比值为62.81%,不受生物质类型变化影响.第 1 阶段的产气量呈增加趋势,其他阶段保持不变.
Abstract
The application of biomass in ironmaking can help reduce CO2 emissions.The minimum Gibbs free energy thermodynamic equilibrium model is constructed for the direct reaction system between biomass and Fe2O3,8 types of biomass are used as reducing agents,and the influence of Fe2O3 mass is analyzed on system indicators.The results indicate that the reduction process can be divided into five stages based on the type of product.The metallization rate in both the first and second stages is 100%,and the metallization rate gradually decreases to 0%in the third stage.In the third stage,the ratio of the mass of equilibrium H2 to the mass of equilibrium H2+H2O is 62.81%,which is not affected by changes in biomass type.In the first stage,the gas production shows an increasing trend,while in other stages it remains unchanged.
关键词
直接还原炼铁/生物质/热解/平衡态气体浓度/热力学平衡模型Key words
direct reduction ironmaking/biomass/pyrolysis/equilibrium gas concentration/thermodynamic equilibrium model引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据