(1. 中南大學(xué) 能源科學(xué)與工程學(xué)院，長沙 410083；2. 三一重工 泵送事業(yè)部，長沙 410100；3. 安徽工業(yè)大學(xué) 冶金與資源學(xué)院，馬鞍山 243002)
摘 要: 以提高底吹熔煉爐反應(yīng)區(qū)的熔煉效率及優(yōu)化底吹爐反應(yīng)區(qū)的氧槍結(jié)構(gòu)參數(shù)為目標(biāo)，運用數(shù)值模擬的方法，建立底吹熔池熔煉爐內(nèi)氣液兩相流動的三維數(shù)學(xué)模型。應(yīng)用正交表設(shè)計數(shù)值模擬的試驗方案，以氣含率、熔池內(nèi)熔體平均速度以及平均湍動能為優(yōu)化指標(biāo)，采用田口方法對底吹熔池熔煉爐進行了氧槍結(jié)構(gòu)多目標(biāo)優(yōu)化研究。結(jié)果表明，通過統(tǒng)計分析方法得到氧槍結(jié)構(gòu)最優(yōu)組合如下：氧槍直徑為0.06 m，氧槍間距為0.98 m，氧槍傾角為17°。對優(yōu)化結(jié)果進行統(tǒng)計驗證，表明采用田口方法優(yōu)化底吹爐氧槍結(jié)構(gòu)可行，優(yōu)化結(jié)果可靠。
關(guān)鍵字: 底吹熔煉爐；氧槍結(jié)構(gòu)；田口方法；多目標(biāo)優(yōu)化
（1. School of Energy Science and Engineering, Central South University, Changsha 410083, China;2. Pumping Division, Sany Heavy Industry, Changsha 410100, China;3. Institute of Metallurgy and Resources, Anhui University of Technology, Ma’anshan 243002, China）
Abstract:In order to improve the reaction rate and optimize the lance structure of the bottom-blown furnace, a three- dimensional gas/liquid two-phase flow model was established by employing numerical simulation method. By applying the gas holdup, the mean velocity and turbulent kinetic energy of the melt as optimum indexes in bottom-blown furnace, an orthogonal array was selected as the computational fluid dynamics (CFD) experimental plan and the multiple-objective optimization of the lance parameters in bottom-blown furnace was studied employing Taguchi design method. The results show that the optimal parameters of lance were determined by statistical analysis method and the optimal combination can be achieved with the lance size of 0.06 m, the lance spacing of 0.98 m and the lance angle of 17°. The results of statistical validation show that the optimization method is feasible and the optimization results are available.
Key words: bottom-blown furnace; Taguchi design method; lance structure; multiple-objective optimization
