Design Of Control System Of Distillation Unit Base On SHCAN2000

Distillation process is widely applied in the production of production process of petroleum and chemical industry. Because the difference of the volatility of each component in the mixture, the process separate components from the mixture to meet requirements of product purity. Distillation process is a very complicated process, the key equipment is rectifying column. In distillation operation, the controlled variable are more than others, and you can choose the operating variables is more, so this needs high quality control system. According to the characteristics of the chemical industry, the distillation device of catalyst adopts CAN bus of high reliability, high cost-efficiency.Control system of SHCAN2000 fieldbus adopted network structure of CAN bus, the control unit concentrated the advantages of traditional PLC, regulator, control the powerful and had a very high reliability and considerable economy, fully emboding the advanced nature of the fieldbus. The system is real-time multitasking operating system, this system is used to realize to hide the information of details of hardware and management of resource, to support system of software application on task level, and to ensure that the concurrent design of the software system, parallel debugging and running in parallel. In the design, debugging and running, each task can completely use all single-chip computer resources and automatically completes the mutual coordination between the functions of management.This paper analyzes the SHCAN2000 control syetem. On the background of renovation project of chemical plant of xiangyang on yingkou, establishing distillation unit based on SHCAN2000 control system. It implemented factory automation production, improved the quality of production and improve the economic efficiency. This system focused on the configuration of PC images based on the FIX and the configuration of the function of field control unit.