2021 Nashville AISTech

Investigation of Carbon Deposition During Natural Gas and Oxygen Injection for the Direct Reduction Ironmaking Process (Room 201 B)

29 Jun 21
9:30 AM - 10:00 AM

Tracks: Direct Reduced Iron: DRI Plant Operations & Digital

Speaker(s): Joel Carmona, ArcelorMittal Lázaro Cárdenas; Elaine Chen, Head of Fines Recycling Plant, Voestalpine Texas; Rui Liu, ArcelorMittal Global R&D; Tyamo Okosun, Purdue University Northwest; Qurram Syed, Purdue University Northwest; Yu Wang, Purdue University Northwest; Cesar Velazquez, ArcelorMittal Lázaro Cárdenas; Chenn Zhou, Purdue University Northwest

In the direct reduced iron (DRI) process, reducing gases are generated in a reformer and lose heat to the environment as they are transported to a shaft furnace. To maintain temperature, oxygen and natural gas are injected. In ideal operation, the natural gas combusts with the oxygen, yielding increased thermal energy. However, in existing operating scenarios, carbon formation around the natural gas ports has become a serious issue. In order to better understand this problem, a three-dimensional computational fluid dynamics model was developed to investigate flow phenomena, combustion characteristics and carbon deposition in this region of the DRI process.