Abstract:

In order to improve desulfurization equipment and technology of hot water pretreatment，and improve the desulfurization efficiency，a new type of agitator was formed through combining the advantages of agitator and spray gun with reference to the traditional KR desulfuration method. The flow field in the hot metal tank was analyzed by Fluent software and Eulerian model. The effects of different eccentricity，stirring speed and ventilation flow of the agitator on the desulfurization effect were studied from the aspects of flow velocity and gas distribution. The results showed that the new agitator could enhance the flow field，and the desulfurization gas ejected by the nozzle at the bottom of the agitator would make the desulfurization gas spread more widely and more evenly in the iron tank. When the new agitator had a stirring speed of 150 r/min，ventilation flow rate of 5.0 m³/h and eccentricity of 0.3，the distribution and intensity of gas was the best，and the flow field had a large average velocity，which was beneficial to the reaction of hot metal and desulfurization agent.

Key words: flow field, KR desulfurization, gas injection, numerical simulation