| Authors | Seyed Abolfazl Razavi Alavi, Ebrahim Nemati Lai, Kamal Afzali |
|---|---|
| Conference Title | 20th European Symposium on Polymer Spectroscopy |
| Holding Date of Conference | 2016-9-11 |
| Event Place | درسدن |
| Presentation | SPEECH |
| Conference Level | International Conferences |
Abstract
Optimizing operating conditions of cyclones in high-density polyethylene (HDPE) drying process play an important role on quality of HDPE powders. In this research work, appropriate operating conditions of cyclones on HDPE drying process have been investigated for a wet feed of 56000 kg/hr containing 40000 kg/hr dry feed and 16000 kg/hr n-hexane in different grades of BL3, BL4 and EX5 in HDPE polymers. Pressure drops in both cyclones has direct effect on flow pattern of gas-particles flow as well as quality of particles collected at the bottom of the dryer. The optimum pressure drops have been achieved by controlling the quality of dried powders as 15 to 17 and 9 to 13 mbar for two-stage dryer respectively. Also by keeping temperature in range of 328.15 to 356.15 K in the bed, the dried product of HDPE powder was produced with humidity close to 0.1 % and the crystallinity about 62.26 % and proper particle size distribution.