Regular Article

Three-dimensional numerical simulation of velocity field distribution in an oxy-coal combustor-melter-separator furnace

¹ North China University of Science and Technology, College of Metallurgy and Energy, Hebei TangShan 063210, PR China
² State Key Laboratory of Advance Steel Processes and Products, Central Iron and Steel Research Institute, Beijing 100081, PR China

^* e-mail: herozk81@163.com

Received: 3 June 2021
Accepted: 2 August 2021

Abstract

In view of the influence of tuyere layout change on velocity field in oxy-coal combustor-melter-separator furnace, three-dimensional numerical simulation method was used to compare the distribution of velocity field in the furnace under different tuyere layout. The purpose is to explore the influence of the velocity distribution on the molten pool flow in the process of multi-tuyere injection. It is shown that the maximum velocity of the upper and lower tuyeres is 60 m/s and 50 m/s. And the change of tuyere has a significant effect on the velocity distribution in the molten pool, and the sudden change of velocity near the tuyere will trigger a certain scale of gyratory zone. In addition, the change of tuyere arrangement will result in the concentration of velocity distribution in the molten pool and the increase of flow dead zone, while the change of tuyere spacing will not only promote the increase of flow dead zone, but also reduce the velocity distribution area.