準(zhǔn)理論模型的應(yīng)用
(中南大學(xué) 化學(xué)化工學(xué)院， 長沙 410083)
摘 要: 應(yīng)用鋁酸鈉溶液種分首槽溫度控制預(yù)報準(zhǔn)理論模型， 結(jié)合實際生產(chǎn)情況， 在原模型參數(shù)的基礎(chǔ)上將晶種表面積改設(shè)為變量， 并考慮到反饋比這一重要工藝參數(shù)的作用，引入小于45μm粒子質(zhì)量分數(shù)和二次成核生成的臨界粒徑的晶核粒徑分布值之間的關(guān)系，應(yīng)用線性回歸原理， 求出修正后的模型參數(shù)， 根據(jù)現(xiàn)場生產(chǎn)數(shù)據(jù)， 對首槽控制溫度進行預(yù)測， 其結(jié)果與穩(wěn)定生產(chǎn)的首槽控制溫度及經(jīng)驗?zāi)Ｐ停╔模型）的預(yù)測結(jié)果基本一致。 以C++Builder為開發(fā)平臺， 成功開發(fā)了基于該原理的、運行于Windows系統(tǒng)的應(yīng)用軟件， 使用效果良好。
關(guān)鍵字: 砂狀氧化鋁； 溫度控制； 準(zhǔn)理論模型
YIN Zhou-lan, CHEN Jin-qing
（College of Chemistry and Chemical Engineering,
Central South University, Changsha 410083, China）
Abstract: According to the practice of sandy alumina production, the surface area of seed is a variable, which is considered to be a constant in the original sub-theory model for the prediction of the first trough temperature. Due to the importance of the Al(OH)3 seed and feedback ratio, a quantitative relation between mass fraction of Al(OH)3 seed whose diameter is less than 45μm, and the distribution frequency is introduced. The model parameters can be obtained by using statistics regression. A software developed with C++ Builder about on-time calculation of the model parameters and the prediction of the first-trough temperature is proved to be reliably available in practice.
Key words: sandy alumina; temperature control; sub-theory model
