关键词: 高炉炉腹, 异型水管, 铜冷却壁, 响应面法, 遗传算法, 优化设计

Abstract: Based on the principle of heat transfer， a parametric model of thermal structure of blast furnace(BF)bosh with shaped tube copper cooling stave(ellipse， rectangle， double circle， three circle and hexagon)for heat transfer is presented. From the heat transfer analysis of copper cooling stave， the optimal choice of cooling water tubes is achieved. Stimulating the normal working condition of BF， the coupled thermal and structural analysis of the model at the initial stage of furnace opening， with the hot and cast-in-brick surface of cooling stave not covered by slag， is conducted to obtain the mutual influencing rules between parameters and its mechanical properties. The response surface method combined with genetic algorithm(NSGA-Ⅱ)is applied to optimize the structural parameters and longevity technology of bosh. The optimized bosh structure has been significantly improved in heat transfer characteristics and mechanical properties. The model and the parametric calculation program can be applied to assess and optimize the design of longevity technology of bosh.

Key words: blast furnace bosh, shaped tube, copper cooling stave, response surface method, genetic algorithm, optimization design