SPG Process Of Polypropylene Plant Production Bottlenecks And Process Optimization

The 20000 tons/year polypropylene unit of Liaohe Petrochemical Company of PetroChina was built in 1999 and put into operation in 2000. It was the first set of SPG polypropylene process Industrialization device, the unit achieved the comprehensive utilization of the propylene product in Liaohe Petrochemical Company of PetroChina. Through a series of technological transformation, the actual production capacity has been able to reach 25000 tons / year, the polypropylene unit played the very important role in Liaohe Petrochemical Company, increased a variety of chemical products and the economic benefit. This device put into operation also provides technical support and practical experience for the industrialization of SPG Technology.By refining unit system, the pre-polymerization system, liquid phase propylene polymerization system of material balance and energy balance analysis, check the device in the actual production capacity and processing capacity of the unit and device design capability of coincidence degree, and provide a theoretical basis for the process unit control parameters optimization and technology transformation.Based on the device of more than 10 years of production practice, through the analysis of the influence of key equipment and technology of the smooth operation of the device, this article explored the production bottleneck restricting the safe and stable operation of the system of the present stage, and systematically summarized and analyzed the bottleneck problem of the production of various types, mainly optimized the production process bottleneck and summarized the measures of the main production units technical transformation measures, couduct a detailed research of the investment and technology transformation reactor technology, propylene condensate pump with gas phase after the gas phase reaction of propylene, reflux amount of propylene circulating material returning system main catalyst feeder system online the effect of the transformation, and conducted a comprehensive evaluation.