Analysis And Optimization Of PVC Production Device Hidden Danger

Safe production is the basis of chemical enterprises.In the process of chemical production of raw materials and products are flammable, explosive, toxic and harmful, production characteristics are high temperature and high pressure, or strength. Therefore, the chemical industry has become a source of danger is particularly concentrated industries. There are some dangerous factors in the process of chemical production, endangering the health and safety of workers.First of all, this paper described the process of polyvinyl chloride, describes the process of polymerization process, process of acetylene production principle, and describes the process of starting, analysis of the status of the process of polymerization device, provided the basic data for the optimization analysis of the following.Then has carried on the analysis from the aspects of process operation safety control. In order to analyze the device hidden, mainly uses the WHY TREE why trees on accident analysis, this method always inquire into the root of the matter to ask why to find fault causes, so it is also called as "WHY TREE". The hazard analysis HAZOP to analyze the design problem, the HAZOP analysis method is a kind of used to identify design defects, process hazard and operational problems of the structured analysis method, is used to evaluate the potential risk due to equipment, equipment parts or mechanical failure caused by wrong operation, and to evaluate its effect on the overall.Through the analysis of method using WHY TREE and HAZOP, analyzing the DCS system security control, power supply, the polymerization of acetylene process control problems.In the process of the existence of hidden dangers, were optimized, optimization analysis of DCS power supply system power supply system, from the analysis of external power supply mode, the internal power supply mode, combined with their own actual, put forward the design scheme of the system optimization. A power supply circuit fault after optimization can achieve arbitrary does not affect the overall operation of the DCS. Acetylene control optimization from the upper and lower valve interlock, water storage bucket, charging and discharging of nitrogen transformation and program optimization four aspects pressure displacement, based on the increase in the field of control valve and the detection signal, the process control with automatic control and safety interlock control, based on the safety and reduce the labor intensity of operators.The polymerization process of the design and optimization of ESD system, the ESD design requests from manual control, procedure control and reliability design.Finally, through the risk analysis, take the optimization measures, to achieve the purpose of safe operation of the system. After the optimization of DCS power supply, can be safe and reliable protection for DCS power supply. Acetylene process control optimization of safety control can realize the acetylene process, reduce the labor intensity of staff. The ESD system is put into use, improve the effect of emergency device.Through the process analysis and optimization of the PVC device has been the safe and stable operation of the device.