The Realization Of CIMCS And Simulational Research Of Ethylene Column In Predictive Control

With the development of computer technology and process control technology, the goal for process control have been enhanced to the level of perfecting production management, improving production quality, saving energy, decreasing production cost. So many new appeals and problems for process control were brought forward. The leaders of enterprise attend how to use CIMCS technology to mange production kinds and quantify and control production process. The project of establishing an Intranet based on Internet technology is up to the course of enterprise development. And using APC(Advanced Process Control) technology to control the production setting aims at decreasing the production cost, saving energy. In this paper, based on research the application of CIMCS in enterprise, it is introduced that the application of technology in YPC Refine Ltd. Corp. and Oriental Chemical Corp, and aimed at the rectified column of ethylene in YPC Refine Ltd, doing the research of the application of predictive control in practice.In the beginning of four chapters, it introduces that the CIMCS structure, predictive control elementary theory, the background of the task and the author's mostly work in this task. In the chapter about CIMCS, it is emphasized that the CIMCS constitutes structure and function, the application of database technology in CIMCS, as well as data communication and data transact method. In the chapter about APC(Advanced Process Control), it is mostly introduced that some basic structure and its trait of predictive control, the property of predictive control, the design of predictive controller and correlation content of general predictive control. And it is studied that some kinds of predictive control arithmetic and structure based on artificial neural network.Secondly, in the fifth chapter, it introduces CIMCS apply in oilcan control system in Yangzi Petro Corp, and control system in Nanjing Oriental Chemical Technology. In the sixth chapter, it introduces the predictive control arithmetic based on RBF neural network and BP neural network, applying in the rectified column of ethylene, and the result is offered.At last, it is summarized that all the paper content and achievements.