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

作　　者：孙贯永 伊山廷 梁东东 袁朝新 刘琦 史志胜 韩少奇 SUN Guanyong;YI Shanting;LIANG Dongdong;YUAN Chaoxin;LIU Qi;SHI Zhisheng;HAN Shaoqi(BGRIMM Technology Group,Beijing 100160,China;Shandong Jinchuang Gold and Silver Smelting Co.,Ltd.,Yantai 265600,China)

机构地区：[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

出　　处：《中国资源综合利用》2024年第9期60-64,共5页China Resources Comprehensive Utilization

基　　金：矿冶科技集团有限公司青年科技创新基金资助项目(04-2216)。

摘　　要：生物质在炼铁领域的应用有助于减少CO_(2)排放。构建生物质与Fe_(2)O_(3)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Fe_(2)O_(3)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H_(2)物质量与平衡态H_(2)+H_(2)O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。The application of biomass in ironmaking can help reduce CO_(2) emissions.The minimum Gibbs free energy thermodynamic equilibrium model is constructed for the direct reaction system between biomass and Fe_2O_3,8 types of biomass are used as reducing agents,and the influence of Fe_2O_(3) 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 H_(2) to the mass of equilibrium H_2+H_(2O) 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 

分 类 号：TF511[冶金工程—钢铁冶金]