From a Single Source: compounding and Conveying Equipment for 40 t HDPE Pellets per Hour

摘要

Stuttgart/Weingarten, Germany -- Within a joint project, companies of the Coperion group have supplied the compounding and conveying equipment for the world-scale plant installed by Basell Polyolefine GmbH at their location in Wesseling for the production of high-density polyethylene (HDPE). Corresponding to an annual production of 250,000 t, this equipment is dimensioned for throughputs up to 40 t/h. Planning and realization of the project are an example showing the interaction of the various process steps of plastics compounding and conveying and also the synergies resulting from the fact that, since the formation of the new Coperion group about 15 months ago, plant engineering can now be provided from a single source. For compounding of the polymer and transforming it into pellets which are ready for further processing, Coperion Werner & Pfleiderer GmbH & Co. KG, Stuttgart, has supplied a co-rotating twin-screw MEGAcompounder ZSK 320 with underwater pelletizer. By means of a pneumatic dense-phase conveying system from Coperion Waeschle GmbH & Co. KG, Weingarten, the pellets are conveyed through a stainless steel pipe widening from 200 to 250 mm ND to the silo cluster about 600 m away, with almost no fines being produced. The pellets are then distributed by pipes and diverter valves to the 50 silos, each one with a capacity of 250 tons, in such a way that each silo receives one production lot.