• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Energy Technologies Symposium >Influence of Coal Reactivity on Carbon Composite Briquette Reaction in Blast Furnace
【24h】

Influence of Coal Reactivity on Carbon Composite Briquette Reaction in Blast Furnace

机译：煤的反应性对高炉碳复合型煤反应的影响

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this research, using the carbon composite briquette (CCB) containing carbon: 20.30 wt%, Fe_3O_4: 29.70 wt%, FeO: 39.70 wt%, metallic iron: 1.57 wt%, and gangue: 8.73 wt%. the reaction behavior of the CCB in BF and the influence of coal reactivity was examined by the numerical investigation. Results showed that the development of the CCB reaction in BF was divided into six stages. The initial temperature of the CCB self-reduction was 850 K, the dominant temperature range in CCB reaction being effective for BF energy-saving was from 1000 K to 1150 K, its final reduction fraction, and final carbon conversion was 1.0 and 0.9, respectively. By decreasing the activation energy of coal gasification, the initial temperature of CCB self-reduction became lower, the effective temperature range of CCB reaction for BF energy-saving was wider, and the final carbon conversion increased, indicating to improve the coal reactivity in CCB could intensify the effect of its reaction on BF energy-saving. By increasing the activation energy of coal gasification, the initial temperature became higher, the effective temperature range of CCB reaction for BF energy-saving was narrower, and the final carbon conversion decreased, reflecting that to reduce coal reactivity in CCB could weaken the effect of its reaction on BF energy-saving.
机译：在本研究中，使用含碳20.30 wt%、Fe_3O_4 29.70 wt%、FeO 39.70 wt%、金属铁1.57 wt%和煤矸石8.73 wt%的碳复合型煤（CCB）。通过数值模拟研究了CCB在高炉内的反应行为以及煤的反应性对CCB的影响。结果表明，高炉内CCB反应的发展分为六个阶段。CCB自还原的初始温度为850k，CCB反应对高炉节能有效的主要温度范围为1000～1150k，其最终还原分数和最终碳转化率分别为1.0和0.9。通过降低煤气化活化能，CCB自还原的起始温度降低，CCB反应对高炉节能的有效温度范围扩大，最终碳转化率增加，表明提高CCB中的煤反应性可以强化其反应对高炉节能的作用。通过提高煤气化活化能，初始温度升高，CCB反应对高炉节能的有效温度范围变窄，最终碳转化率降低，说明降低CCB中的煤反应性会削弱其反应对高炉节能的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号