Automation systems and instruments mainly include pneumatic instruments, combined analog electrical unit instrument control system based on electrical instruments, digital direct control based on computer technology, distributed control system based on microprocessor, computer control system and monitoring computer control. At present, they are in the fifth generation system based on process control. Based on chemical measurement and analysis, field technology can greatly improve the sensitivity and resolution of measurement and analysis, and greatly shorten the analysis period. Near infrared spectroscopy, microwave, nuclear magnetic resonance and other commonly used analytical techniques are conducive to achieving the goal of multi-purpose, multi-function, multi-index, online, real-time and other molecular level laboratory analysis. The continuous, online and real-time analysis system of composition and product quality has gradually replaced the conventional quality laboratory, and effectively improved the environmental quality monitoring and process control activities. A large number of sensors can use computer network technology to realize real-time direct transmission of image information and data in the whole factory, which lays a data foundation for model optimization. At the same time, through the combination of component models, the changing process at the molecular level can be accurately described, and the product composition can be accurately predicted in the continuous optimization of the whole plant production process.
2, production process control to production management integration or integration.
MES is a kind of management software commonly used in chemical enterprises, and discrete industry is the basis of its formation, and gradually extends to the field of process industry. With the gradual expansion of the application scope of DCS, the interface problem between MES and DCS is gradually exposed. Therefore, PIMS should be added in the design of MES to provide the possibility of receiving real-time data from DCS, so as to realize the integration of operation data and production performance management. The basic functions of MES in process industry are: quality management, process optimization control, technical information management, maintenance management, process management and control, job scheduling and scheduling; Production, short-term production plan, etc. At the same time, it can also meet some special needs in the field of process industry, mainly including: material balance, tank farm balance, tank farm management and equipment.
@ Huihe Huade
Performance calculation, equipment life prediction, public works balance management, operation data statistics, data correction and adjustment, etc.