公开(公告)号：US10788262B2

公开(公告)日：2020-09-29

申请号：US16076198

申请日：2017-02-14

Applicant: Basell Polyolefine GmbH

Inventor： Harald Prang ,  Michael Chatterjee ,  Reinhard Kuehl ,  Alexander Seifert

IPC: F26B3/084 ,  B01J8/00 ,  B01J8/18 ,  B01J8/26 ,  B01J8/36 ,  C08F6/00 ,  C08F6/24 ,  C08F10/02 ,  F26B21/14 ,  C08F2/14 ,  C08L23/06

Abstract: A method for preparing a dried powder is provided. The facility includes a first drying chamber having a heating element and a second drying chamber. A mixture of powder and diluent is introduced into the first drying chamber. A pre-dried powder is transferred from the first drying chamber into the second drying chamber. A dried powder, including a recirculated amount of powder and a discharge amount of powder, is formed in the second drying chamber. The recirculated amount of the dried powder is transferred by a conveyor device from the second drying chamber into the first drying chamber. The discharge amount of the dried powder is discharged from the second drying chamber.

公开(公告)号：US20170341266A1

公开(公告)日：2017-11-30

申请号：US15532274

申请日：2015-12-03

Applicant: Basell Polyolefine GmbH

Inventor： Peter Kruempel ,  Harald Prang ,  Reinhard Kuehl ,  Elke Damm

IPC: B29B7/72 ,  B29B9/12 ,  B29B7/42 ,  C08J3/20 ,  B29B7/00 ,  B29B9/06 ,  B29B7/90 ,  C08K3/04 ,  B29B7/60 ,  B29K507/04

CPC classification number: B29B7/728 ,  B29B7/005 ,  B29B7/007 ,  B29B7/38 ,  B29B7/42 ,  B29B7/48 ,  B29B7/603 ,  B29B7/88 ,  B29B7/90 ,  B29B9/06 ,  B29B9/065 ,  B29B9/12 ,  B29C48/022 ,  B29C48/03 ,  B29C48/04 ,  B29C48/286 ,  B29C48/288 ,  B29C48/298 ,  B29C48/92 ,  B29C2948/92104 ,  B29C2948/926 ,  B29C2948/92828 ,  B29K2023/06 ,  B29K2023/065 ,  B29K2105/16 ,  B29K2507/04 ,  C08J3/203 ,  C08J3/22 ,  C08J2323/06 ,  C08J2323/08 ,  C08K3/04 ,  G05D11/132

Abstract: A process for continuously preparing a polyolefin composition made from or containing a polyolefin and carbon black in an extruder device. The process includes the steps of supplying polyolefin in form of a polyolefin powder and carbon black to a mixing device; alternatively, (a) measuring the flow rate of the polyolefin powder supplied to the mixing device or (b) measuring the flow rate of the polyolefin pellets prepared in the extruder device; adjusting the flow rate of the carbon black to the mixing device in response to the measured flow rate of the polyolefin powder or adjusting the flow rate of the polyolefin powder to the mixing device in response to the measured flow rate of the polyolefin pellets; melting and homogenizing the mixture within the extruder device; and pelletizing the polyolefin composition into the polyolefin pellets.