復雜過程系統行為特征分析與調控課題立項報告

王杭州++袁志宏++邱彤++趙勁松++陳丙珍

摘 要：研究復雜化工過程系統的動態行為特性內在規律及其調控理論和方法是進行化工過程物質與能量高效利用的集成優化的前提條件。對于復雜的化工系統，操作條件與過程結果的輸入輸出多重性、穩定性和可控性是其重要的行為特征，良好的系統行為特征是過程高效能/質轉換的重要保障。該研究以烯烴制備、聚烯烴合成等工業過程為對象，重點研究復雜過程系統的穩定性和可控性條件，即對如何確保所設計的復雜化工過程在不確定因素擾動下仍能維持穩定操作的關鍵科學問題（如輸入輸出多重性、穩定性以及可控性等）進行綜合研究，擬應用分岔理論和奇異值理論揭示這些化工過程非線性特征與過程流程的拓撲結構以及參數（設計、操作）之間的內在聯系的規律，確定具有良好系統行為特征的過程流程拓撲結構以及操作區域，從而使得所設計的過程在本質上具有維持穩定運行的系統特性，從源頭上降低不穩定生產的概率或避免事故的發生，為能/質高效轉化提供保障。

關鍵詞：多穩態 動態特性 穩定性 拓撲結構 多目標優化

Project Proposal for Nonlinear Behaviors Analaysis and Control of Complex Process System

Wang Hangzhou Yuan Zhihong Qiu Tong Zhao Jinsong Chen Bingzhen

（Tsinghua University）

Abstract：For complex chemical processes， detailed study of system dynamic behavior （system dynamics）， including it intrinsic pattern and control theory， serves as significant prerequisites for integrated optimization aiming at highly efficient mass and energy utilization. As the essential characteristics of complicated chemical systems， the input/output multiplicity， stability and controllability will simultaneously determine the level of efficient mass and energy conversion and utilization. This work mainly focuses on the stability and controllability condition for complex process systems. Herein， olefin preparation manufacturing and polyolefin production processes were selected as the major processes to investigate. The scientific problem lies in how to guarantee and maintain stable operation of the designed chemical process even under uncertain disturbances. Bifurcation analysis and singularity theory were introduced to elucidate the inherent relationships existing among process nonlinearity， flow-sheet topology， and design/operating parameters. Identification of optimum topological structure and operating region that are able to intrinsically maintain stable operation will significantly contribute to inherently safer process design， which eliminates/minimizes potential hazards at the source root level and laid a solid foundationthe cornerstone for highly efficient mass and energy utilization.

Key Words：Multi-steady state； Dynamic behavior； Tability； Topological structure； Multi-object optimization