NOUFERROUS METALLURGICAL EQUIPMENT

In practical engineering, the flue tube group within the waste heat boilers is frequently worn by scouring of the flue gas. To deal with this situation, the experts usually using several adding fins to protect the tube group, which could reduce the scouring of flue gas. However, the design of the adding fins, including the number and the position is mostly based on experience, which lacks of theoretical support and verification. In this article, the influence of adding fins on the flow field of the flue gas is studied by CFD simulation. Furthermore the optimizes design of the fins is achieved by analysing simulation results.The simulation results show that the addition of fins to the tube group has a diversion effect on the flue gas, which can improve the flow uniformity of the flue gas in the pipeline, and at the same time, the fine design of the width and height of the fins can further improve the flue gas flow uniformity and improve the heat exchange efficiency between the flue gas and the tube group.