Polyolefin waste and its utilization in Polski Koncern Naftowy ORLEN SA
Polimery 2002, No 7/8, 560
The results of the Environmental Compliance Program started in Polski Koncern Naftowy ORLEN SA in 1997 have been described. Realization of the Program allowed to reduce SO2 annual emission from 38 kt to 16 kt, to decrease wastewater volume from 15·106 m3/y to 6.6.·106 m3/y and to decrease the phenol content in wastewater from 8.2 to 3.8 kg/day. By-products and waste products created in polyolefins units have been described, especially atactic polypropylene and other kinds of wastes from various points of the PP and PE-LD plants. As a results of application of a new generation catalysts for propylene polymerization, atactic PP amount decreased from about 10 to 1.5 wt. %. Method of its application as a component of bitumens has been developed.
Keywords: Polski Koncern Naftowy Orlen SA, environmental pollution reducing, polyolefin wastes, atactic polypropylene, utilization