Patent · US Active

Apparatus and method for processing white water in a paper machine

US11028533B2 · kind B2 · utility

0Cited by

7References

21Claims

0Family size

Assignee

VALMET AKTIEBOLAG · FI

Inventors

Elin Engqvist · Karlstad, SE
Leif Videgren · Karlstad, SE

Key dates

Filing date	Dec 23, 2019
Grant date	Jun 8, 2021
Priority date	—
Expiry date	Dec 23, 2039

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21D5/26
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Aspects provide for a Whitewater processing system suitable for managing an ejected Whitewater spray during operation of a paper or board making machine. A de-air system may provide for improved removal of air from the Whitewater. A calming system may reduce turbulence in a liquid flow, reducing turbulence in the flume. The de-air system and calming system may be disposed together or separately. Certain aspects may be implemented with a turbine (e.g., used to generate electricity from the Whitewater spray). Some aspects may provide for improved handling of variable spray velocities.

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