Patent · US Active

Method for drying a humid polymer powder and device suitable for said method

US9803919B2 · kind B2 · utility

1Cited by

6References

13Claims

0Family size

Assignees

thyssenkrupp Uhde GmbH · DE
Vinnolit GmbH & Co. KG · DE

Inventors

Michael Benje · Darmstadt, DE
Peter Kammerhofer · Altötting, DE

Key dates

Filing date	Feb 23, 2012
Grant date	Oct 31, 2017
Priority date	—
Expiry date	Mar 13, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An apparatus (1) and method for drying polymer powders is described. The apparatus has an inlet (2) and an outlet (3) for the polymer powder, heat registers (5) installed in the interior space (4) and lines (7) for a heated gas (6a) for drying the polymer powder. The lines open into the interior space (4) and are connected to heat exchangers (9) for heating gas (6). The heat exchangers (9) are connected to a plant for the preparation of 1,2-dichloroethane (15) and/or for the preparation of vinyl chloride from 1,2-dichloroethane so that thermal energy from the plant can be utilized for heating the gas (6). The method comprises treatment of a polymer powder with a heated gas (6a) in the drying apparatus (1).

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