Based On The Security Analysis Of The Polypropylene Reaction Apparatus

Nowadays, the petrochemical production of the industries are getting larger and larger,It is one of the pillar industries of the national economy, and occupies an importantposition in the national industry. However, the harmful substances and energy ofpetrochemical industries are constantly increasing. And the production equipment andpipelines are numerous, operation is complex, process continuity is strong, the automationis high degree in the system. Therefore, the kinds of potential accidents is extremelycomplicated, the slightest mistake will have very serious consequences of the accident, andprevention of accidents is particularly important.Polypropylene is one of the fastest growing products in synthetic resin, and is apolymer material having a wide range of applications. However, the propylenepolymerization devices are often conducting the highly exothermic chemical reaction athigher temperature and pressure. Its using raw materials, additives, co-catalyst, such aspropylene, hydrogen, triethyl aluminum with a low ignition point, the explosion limitwidth, is a flammable, explosive and toxic substances. Therefore, improving the processsafety for ensuring propylene polymerization reactor safe and stable operation is essential.Against the SDG-HAZOP analysis report is tedious and the important issues can notbe separated from the general ones. Analytic Hierarchy Process (AHP) traditional ratioscale of1to9is unreasonable. The1to9scale、9/9to9/1scal、10/10to18/2scaling、exponential scale were compared, then the optimal scale was selected. The article presentsa SDG-HAZOP comprehensive quantitative evaluation model based on AHP of improvingthe scale.For the application background of polypropylene production device of SinopecWuhan Branch, utilizing a SDG-HAZOP comprehensive evaluation model based on AHPof improving the scale conducts safety analysis for the propylene polymerizationproduction. Calculated objective evaluation weights of each dangerous paths of theSDG-HAZOP. It effective sequenced according to their objective evaluation weights, and screened the relative importance of the small path. Then it can proposed the correspondingmeasures of prevention and improvement for the important potential danger.Meanwhile, against the SDG-HAZOP analyzed the reaction process of hightemperature, high pressure easily leading to a file and explosion hazardous characteristics,the article presents a FTA qualitative method based on SDG-HAZOP for safety analysis offire and explosion hazards existing in the production process of the propylenepolymerization device. It can roundly identify the existent security risks of the equipment,reveal the system inherent or potential risk factors, reduce the risk of device operation, andprevent the blast accidents.