Patent · US Active

Pellet drying and degassing method

US11549749B2 · kind B2 · utility

0Cited by

7References

18Claims

0Family size

Assignee

Basell Polyolefine GmbH · DE

Inventors

Giulia Mei · Ferrara, IT
Juergen Mohrbutter · Bornheim, DE
Dieter Littmann · Heßheim, DE
Christoph Wolf · Pulheim, DE
Andre-Armand Finette · Cologne, DE
Michael Deuerling · Weilerswist, DE
Giuseppe Penzo · Mantova, IT

Key dates

Filing date	Jun 21, 2018
Grant date	Jan 10, 2023
Priority date	—
Expiry date	Oct 21, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29K2105/251
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Method for the preparation of dried polymer pellets in a facility having a dryer with a first chamber and a mechanical agitator, and the facility further having a degassing silo with a second chamber, the method includes the steps of guiding a drying gas flow made from or containing a first gas mixture for drying wet polymer pellets into the first chamber, transferring the dried polymer pellets into the second chamber, guiding a second gas mixture for degassing the dried polymer pellets into the second chamber thereby transforming the second gas mixture into a third gas mixture and guiding a portion of the third gas mixture into the first chamber; and process for manufacturing LDPE pellets.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.