本文選題：變壓精餾 + 模擬退火算法�。� 參考：《青島科技大學(xué)》2017年碩士論文

【摘要】：變壓精餾的經(jīng)濟(jì)優(yōu)化對(duì)其節(jié)省設(shè)備投資與降低能耗具有決定性意義。本文提出了基于序貫迭代軟件優(yōu)化方法和基于模擬退火算法的優(yōu)化方法,以丙酮-甲醇和甲醇-氯仿共沸體系的變壓精餾工藝為例對(duì)所提出的優(yōu)化方法進(jìn)行研究與討論。利用化工流程模擬集成技術(shù),通過(guò)Visual Basic調(diào)用Aspen Plus自動(dòng)化服務(wù)器,以年度總費(fèi)用(TAC)為目標(biāo)函數(shù),結(jié)合傳統(tǒng)序貫迭代法理論基礎(chǔ),開(kāi)發(fā)出基于序貫迭代法變壓精餾優(yōu)化軟件并形成相應(yīng)的優(yōu)化方法。分析討論模擬退火算法的狀態(tài)產(chǎn)生規(guī)則與冷卻進(jìn)度表的選擇準(zhǔn)則,將模擬退火算法與流程模擬集成技術(shù)結(jié)合起來(lái),實(shí)現(xiàn)基于流程模擬與模擬退火算法的軟件開(kāi)發(fā)并提出相應(yīng)的優(yōu)化方法。將所提出的兩種優(yōu)化方法分別應(yīng)用到丙酮-甲醇、甲醇-氯仿共沸體系無(wú)熱集成及熱集成變壓精餾的經(jīng)濟(jì)優(yōu)化。研究表明,所提出的兩種優(yōu)化方法皆能獲得比傳統(tǒng)優(yōu)化方法更優(yōu)的TAC值。壓力優(yōu)化的變壓精餾經(jīng)濟(jì)優(yōu)化結(jié)果表明:丙酮-甲醇無(wú)熱集成與部分熱集成變壓精餾最優(yōu)TAC分別減少了17.32%,15.52%。甲醇-氯仿無(wú)熱集成與完全熱集成變壓精餾最優(yōu)TAC分別減少了9.04%,4.05%。與壓力設(shè)定的優(yōu)化結(jié)果相比,壓力優(yōu)化的經(jīng)濟(jì)優(yōu)化過(guò)程能顯著降低目標(biāo)函數(shù)TAC值。因此,兩塔的操作壓力優(yōu)化對(duì)于變壓精餾及其熱集成工藝的經(jīng)濟(jì)優(yōu)化具有極其重要的意義。熱集成變壓精餾工藝的再優(yōu)化研究表明:對(duì)于最優(yōu)工藝塔板數(shù)較多的丙酮-甲醇共沸體系,其熱集成工藝再優(yōu)化后TAC明顯降低;對(duì)于最優(yōu)工藝塔板數(shù)較少的甲醇-氯仿共沸體系,其熱集成工藝再優(yōu)化后TAC降低較少。本文所提出的基于序貫迭代軟件優(yōu)化法和基于模擬退火算法的優(yōu)化方法具有易獲得較優(yōu)TAC值、計(jì)算耗時(shí)較少、自動(dòng)或半自動(dòng)運(yùn)行等優(yōu)勢(shì),可用于其它二元共沸物系變壓精餾的經(jīng)濟(jì)優(yōu)化與工業(yè)設(shè)計(jì)。
[Abstract]:The economic optimization of variable-pressure distillation plays a decisive role in saving equipment investment and reducing energy consumption. In this paper, the optimization method based on sequential iterative software optimization and simulated annealing algorithm is proposed. The study and discussion of the proposed optimization method are carried out by taking the pressure swing distillation process of acetone-methanol and methanol-chloroform azeotropic system as an example. Using chemical process simulation integration technology, calling Aspen Plus automation server through Visual Basic, taking total annual cost as objective function, combining with the theory foundation of traditional sequential iteration method. The optimization software of variable-pressure distillation based on sequential iterative method was developed and the corresponding optimization method was developed. The state generation rules of simulated annealing algorithm and the selection criteria of cooling schedule are analyzed and discussed. The integration technology of simulated annealing algorithm and process simulation is combined. The software development based on process simulation and simulated annealing algorithm is realized and the corresponding optimization method is proposed. The two optimization methods were applied to the economic optimization of acetone-methanol, methanol-chloroform azeotrope system without heat integration and thermal integrated pressure swing distillation. The results show that both of the proposed optimization methods can obtain better TAC than the traditional optimization methods. The results of economic optimization of pressure optimization show that the optimal TAC of acetone-methanol thermo-free distillation and partial thermal integrated distillation is 17.32% 15.52% respectively. The optimal TAC of methanol chloroform thermostatic integration and complete thermal integration variable pressure distillation decreased by 9.04 and 4.05, respectively. Compared with the optimization results of pressure setting, the economic optimization process of pressure optimization can significantly reduce the TAC value of the objective function. Therefore, the operation pressure optimization of the two towers is of great significance for the economic optimization of the variable pressure distillation and its thermal integration process. The study of reoptimization of thermal integrated pressure swing distillation process shows that the TAC of acetone-methanol azeotropic system with more plates is obviously reduced after the optimization of thermal integration process. For the methanol-chloroform azeotropic system with less plate number, the TAC decreased less after the optimization of the thermal integration process. The optimization method based on sequential iterative software optimization and simulated annealing algorithm has the advantages of easy to obtain optimal TAC value, less computation time, automatic or semi-automatic operation, etc. It can be used for economic optimization and industrial design of other binary azeotropic distillation systems.
【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TP301.6;TQ028.31

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本文編號(hào)：1791954