本文關(guān)鍵詞： 水合物 動(dòng)力學(xué) 流程建模 收斂方法 經(jīng)濟(jì)性評價(jià) 全局優(yōu)化方法　出處：《天津大學(xué)》2016年博士論文　論文類型：學(xué)位論文

【摘要】：本論文針對催化裂化干氣和催化裂解氣低能耗分離低碳烯烴的需求,結(jié)合較高濃度油吸收效率高、較低濃度水合效率高的優(yōu)勢,開發(fā)了一種用于分離低碳?xì)怏w混合物的吸收-水合復(fù)合工藝�，F(xiàn)有的流程模擬軟件中均沒有關(guān)于水合物的物性計(jì)算方法,為了模擬和評估所開發(fā)的流程,本文參考現(xiàn)有的熱力學(xué)理論,在方程導(dǎo)向的建模環(huán)境中編寫了多相相平衡計(jì)算程序,并根據(jù)動(dòng)力學(xué)實(shí)驗(yàn)的結(jié)果,使用時(shí)間正交離散的方法,擬合了乙烯水合動(dòng)力學(xué)參數(shù)。以動(dòng)力學(xué)和熱力學(xué)模型為基礎(chǔ),建立了水合操作單元的模型,并將模型成功地鏈接到流程模擬軟件中;在流程模擬軟件中構(gòu)建了整個(gè)吸收-水合復(fù)合流程,以經(jīng)濟(jì)性評估為參考,優(yōu)化了流程操作條件。計(jì)算結(jié)果表明,吸收-水合流程的年平均費(fèi)用比傳統(tǒng)吸收法低12%;同時(shí)發(fā)現(xiàn),雖然水合物能夠有效回收低濃度的C2,但是對于高濃度的C2,由于其內(nèi)部的大小孔結(jié)構(gòu),水合物并不能提供較高的選擇性。最后,針對大規(guī)模流程高效模擬的需求,討論了化工系統(tǒng)工程的發(fā)展方向,包括更先進(jìn)的建模工具、全局優(yōu)化、計(jì)算容錯(cuò)和并行計(jì)算等,提出了一種實(shí)現(xiàn)熱耦合流程全局優(yōu)化的框架,該框架包括并行的全局優(yōu)化算法、簡化的操作單元模型、幫助流程收斂的漸變邊界法以及挾點(diǎn)分析等內(nèi)容,該框架適用于優(yōu)化復(fù)雜的熱耦合系統(tǒng)。
[Abstract]:In this paper, according to the demand of FCC dry gas and catalytic cracking gas for low energy consumption separation of low carbon olefin, combined with the advantages of higher oil absorption efficiency and higher hydration efficiency. An absorption-hydration composite process for the separation of low-carbon gas mixtures has been developed. There are no methods for calculating the physical properties of hydrates in existing process simulation software. In this paper, referring to the existing thermodynamic theory, a multiphase equilibrium calculation program is written in the equation-oriented modeling environment. According to the results of the kinetic experiments, the method of time orthogonal discretization is used. Based on the kinetic and thermodynamic models, the model of hydration unit was established, and the model was successfully linked to the process simulation software. The whole absorption-hydration complex process was constructed in the process simulation software, and the operating conditions were optimized with the economic evaluation as the reference. The calculation results show that the annual average cost of the absorption-hydration process is 12% lower than that of the traditional absorption method. At the same time, it is found that, Although hydrates can recover low concentration of C _ 2 effectively, for high concentration C _ 2, hydrates can not provide high selectivity due to their internal macroporous structure. This paper discusses the development direction of chemical engineering, including more advanced modeling tools, global optimization, computational fault tolerance and parallel computing, and proposes a framework for global optimization of thermally coupled processes, which includes parallel global optimization algorithms. The simplified operation unit model, the gradient boundary method to help the convergence of the process and the analysis of the carrying point, etc., are suitable for the optimization of complex thermal coupling systems.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2016
【分類號】：TQ028.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 許維秀;李其京;陳光進(jìn);;水合物法分離煉廠氣的技術(shù)進(jìn)展[J];河南化工;2006年06期

2 李爽;陳利瓊;劉虹;陳軍華;;管道失效后環(huán)境破壞的經(jīng)濟(jì)性評價(jià)[J];石油科技論壇;2006年05期

3 劉妮;劉道平;謝應(yīng)明;;水合物法高效儲(chǔ)存二氧化碳?xì)怏w的實(shí)驗(yàn)研究[J];中國電機(jī)工程學(xué)報(bào);2009年14期

4 宋琦;王樹立;武雪紅;余匯軍;韓敬英;;水合物技術(shù)應(yīng)用與展望[J];油氣儲(chǔ)運(yùn);2009年09期

5 李穎;;藥品目錄遴選的藥品經(jīng)濟(jì)性評價(jià)模式研究——基于澳大利亞、英國、德國和法國的比較[J];中共中央黨校學(xué)報(bào);2009年05期

6 張方;王曼;杜s，

本文編號：1528472