Abstract
The present research comes from the Ningbo KeYuan 70,000 ton/ year styrene-butadiene rubber project of Zheda Zhongkong (hereinafter referred to Keyuan project). The author selects the DCS control of the catalytic cracking equipment and plant FAT as the main subjects of this research, and on the basis of the current most commonly used distributing control system and project implementation, the author will design corresponding feasible solution.
In this thesis, the author reviewed the development of distributing control system, introduced the basic structure and operating principles of DCS. And he also introduced the development trend of DCS and the application of DCS in industrial spot in recent years, especially analyzed the features and composition of of ECS-100 DCS of Zheda Zhongkong. The author has in this thesis briefly presented the features and the whole production process of Keyuan project and the specific process in real device of DCS; he has described the application of DCS in catalytic cracking process and designed the whole process: including design of control program, system configuration, until the final project, etc.
What the author researched in this thesis is a practical application of the project, and the work completed is the design and engineering implementation of DCS in industrial spot. The first chapter is a brief introduction of Distributing Control System; the second chapter is the catalytic cracking process; the third chapter introduces the control programs and chain procedures of this project; the fourth chapter describes the design of entire Instrument circuit diagram of Keyuan project as well as some of the flow chart design; the fifth chapter comprehensively introduces the plant FAT.
On the basis of analysis and design of distributing control system, and in accordance with the requirements of actual production and computer monitoring system, the present thesis has finished collecting the data of computer monitoring system, the management of the upper and lower PC. Finally, according to the result of spot operation, the author has put forward the shortcoming of the system and possible improving scheme.