化工学报
化工學報
화공학보
JOURNAL OF CHEMICAL INDUSY AND ENGINEERING (CHINA)
2014年
12期
4929-4934
,共6页
叶贞成%钱智媛%罗娜
葉貞成%錢智媛%囉娜
협정성%전지원%라나
算法%优化%计算机模拟%代理模型%有效全局优化算法%中段回流
算法%優化%計算機模擬%代理模型%有效全跼優化算法%中段迴流
산법%우화%계산궤모의%대리모형%유효전국우화산법%중단회류
algorithm%optimization%computer simulation%surrogate model%efficient global optimization%pumparound reflux
常减压装置能量消耗约占炼厂总用能的25%～30%，在保证产品产量与质量的条件下，优化常减压蒸馏塔操作条件，可有效降低能耗。为了避免随机优化算法对常压塔机理模型进行操作优化时，存在计算资源消耗大、效率低的问题，文中采用基于代理模型的全局优化方法优化常压塔的余热回收过程，在优化迭代过程中用Kriging代理模型来代替耗时的精确模型评估。实验表明模型调用次数相较于粒子群优化算法减少了90%，优化时间减少了85%，实现了能量优化并且保证了侧线产品之间的分离精度。
常減壓裝置能量消耗約佔煉廠總用能的25%～30%，在保證產品產量與質量的條件下，優化常減壓蒸餾塔操作條件，可有效降低能耗。為瞭避免隨機優化算法對常壓塔機理模型進行操作優化時，存在計算資源消耗大、效率低的問題，文中採用基于代理模型的全跼優化方法優化常壓塔的餘熱迴收過程，在優化迭代過程中用Kriging代理模型來代替耗時的精確模型評估。實驗錶明模型調用次數相較于粒子群優化算法減少瞭90%，優化時間減少瞭85%，實現瞭能量優化併且保證瞭側線產品之間的分離精度。
상감압장치능량소모약점련엄총용능적25%～30%，재보증산품산량여질량적조건하，우화상감압증류탑조작조건，가유효강저능모。위료피면수궤우화산법대상압탑궤리모형진행조작우화시，존재계산자원소모대、효솔저적문제，문중채용기우대리모형적전국우화방법우화상압탑적여열회수과정，재우화질대과정중용Kriging대리모형래대체모시적정학모형평고。실험표명모형조용차수상교우입자군우화산법감소료90%，우화시간감소료85%，실현료능량우화병차보증료측선산품지간적분리정도。
Energy consumption of crude oil distillation unit accounts for about 25% to 30% of refinery total energy. Satisfying the request of product yield and quality, optimizing crude distillation column operating conditions can effectively reduce energy consumption. Using stochastic optimization algorithms directly optimizing model of atmospheric tower is time-consuming and low efficient. In this paper, efficient global optimization algorithm based on surrogate model is applied to optimization of atmospheric tower’s heat recovery. Kriging surrogate model is used as a replacement to the original model which is time-consuming in iterative optimization process. The result shows that this method decreases 90% number of assessment and decreases 85% optimization time compared with particle swarm optimization and realizes energy savings and meets product separation accuracy requirements.
