东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (10): 1408-1412.DOI: 10.12068/j.issn.1005-3026.2018.10.008

• 材料与冶金 • 上一篇    下一篇

基于化学链制氧的加热炉富氧燃烧系统构建及分析

王坤, 王鸿洁, 魏佳, 张可牧   

  1. (东北大学 冶金学院, 辽宁 沈阳110819)
  • 收稿日期:2017-12-27 修回日期:2017-12-27 出版日期:2018-10-15 发布日期:2018-09-28
  • 通讯作者: 王坤
  • 作者简介:王坤(1987-),男,山东莱芜人,东北大学讲师,博士.冯明杰(1971-), 男, 河南禹州人, 东北大学副教授; 王恩刚(1962-), 男, 辽宁沈阳人, 东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51604078); 中央高校基本科研业务专项资金资助项目(N162504012); 中国博士后基金资助项目(2017M610185);东北大学博士后基金资助项目(20170101).国家自然科学基金资助项目(51171041).

Construction and Analysis of Heating Furnace Oxy-Fuel Combustion System Based on Chemical Looping Oxygen Production

WANG Kun, WANG Hong-jie, WEI Jia, ZHANG Ke-mu   

  1. School of Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2017-12-27 Revised:2017-12-27 Online:2018-10-15 Published:2018-09-28
  • Contact: WANG Kun
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摘要: 基于化学链制氧原理构架了加热炉富氧燃烧系统,以解决富氧燃烧氧气来源问题.通过对Co3O4氧解耦特性的研究,分析构建系统的可行性.结果表明:Co3O4释氧反应平衡氧的体积分数随温度升高而急剧增大,当反应温度为900℃时,平衡氧的体积分数为29.6%;烟气中CO2,H2O等成分不会对Co3O4释氧过程产生影响;随Co3O4与烟气物质量的比的增大,烟气中氧气的体积分数逐渐增大,当物质量的比为1∶1时,950℃下氧气的体积分数可达24.5%;考虑实际生产过程,产量为32t/h的蓄热式轧钢加热炉,富氧率为4%时,Co3O4填充量为3.4t.

关键词: 加热炉, 富氧燃烧, 化学链, 载氧体, 氧解耦

Abstract: Based on the principle of chemical looping oxygen production, the oxy-fuel combustion system of heating furnace was built to solve the oxygen source problem.The feasibility of constructing the system was analyzed by investigating the characteristics of Co3O4 oxygen uncoupling. The results showed that the volume fraction of the equilibrium oxygen from the Co3O4 reduction increases sharply with the reaction temperature. When the temperature is 900℃, the volume fraction of the equilibrium oxygen is 29.6%.The components of CO2 and H2O in flue gas do not affect the oxygen release process of Co3O4. The oxygen volume fraction in flue gas increases with increasing the mole ratio of Co3O4 and flue gas. When the mole ratio is 1:1, the oxygen volume fraction can be up to 24.5% at 950℃. In practice, for a furnace with 32t/h output,when the oxygen-enriched rate is 4%, the Co3O4 filling capacity is 3.4t.

Key words: heating furnace, oxy-fuel combustion, chemical looping, oxygen carrier, oxygen uncoupling

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