• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Alternative Routes of Iron and Steelmaking ICARISM'99, Sep 15-17, 1997, Perth, WA >HYL Self-Reforming Technology: Start-Up and Operation
【24h】

HYL Self-Reforming Technology: Start-Up and Operation

机译：HYL自重整技术：启动和运行

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

HYL developed a direct reduction process (DR) that does not require a reformer; it is called self-reforming process. Typically, direct reduction processes based on natural gas utilise a reformer unit to transform the natural gas into reducing agents (hydrogen and carbon monoxide). The reforming reactions are: CH_4 + H_2O → 3H_2 + CO CH_4 + CO_2 → 2H_2 + 2CO These reforming units require a catalyst agent to promote the kinetics of the reforming reactions. The catalyst for these reactions is typically a metallic element such as nickel in a ceramic matrix; iron is also an excellent catalyst for the reforming reactions. In the case of the self-reforming process, the reforming of the natural gas takes place inside the reduction reactor using the metallic iron of the DRI as catalyst. During normal operation of all reformers, actions must be taken to condition the feed gas in order to avoid carburisation or poisoning of the catalyst. In this case, since the catalyst (metallic iron) is continually renewed in the reduction zone, neither the carburisation nor the poisoning of the catalyst represents any problem for the 'in situ' reforming reactions. The key concept for this process is to take advantage of the catalytic effect of metallic iron on the reforming reactions, thus performing inside the DR reactor the 'in situ' reforming of the natural gas in parallel with the reduction of the iron ore and the carburisation of the DRI.
机译：HYL开发了不需要重整器的直接还原工艺（DR）；这称为自我改革过程。通常，基于天然气的直接还原过程利用重整单元将天然气转化为还原剂（氢气和一氧化碳）。重整反应为：CH_4 + H_2O→3H_2 + CO CH_4 + CO_2→2H_2 + 2CO这些重整单元需要催化剂以促进重整反应的动力学。这些反应的催化剂通常是金属元素，例如陶瓷基体中的镍。铁还是重整反应的极佳催化剂。在自重整过程中，天然气的重整在还原反应器内部进行，该反应器使用DRI的金属铁作为催化剂。在所有重整器的正常运行期间，必须采取措施调节进料气，以避免催化剂渗碳或中毒。在这种情况下，由于催化剂（金属铁）在还原区中不断更新，因此催化剂的渗碳和中毒都不会对“原位”重整反应造成任何问题。此过程的关键概念是利用金属铁对重整反应的催化作用，从而在DR反应器内部执行天然气的“原位”重整，同时还原铁矿石和渗碳。 DRI。

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