Patent · US Active

Method and device for cleaning of filter

US8518273B2 · kind B2 · utility

10Cited by

25References

4Claims

0Family size

Assignee

METSO PAPER SWEDEN AB · SE

Inventors

Patrik Lownertz · Karlstad, SE
Magnus Ingelman · Karlstad, SE

Key dates

Filing date	May 24, 2005
Grant date	Aug 27, 2013
Priority date	—
Expiry date	Jul 4, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P40/40
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The method and arrangement is for cleaning at least one of filter sheets and filter cakes in a pressurized white liquor filter with spray nozzles and driving fluid. The white liquor filter is used in a causticizing process in which green liquor is causticized before the white liquor filter by the addition of lime and in which it forms during the process a lime mud slurry. The white liquor filter 101 is used to separate white liquor from the lime mud. The driving fluid for the spray nozzle is constituted principally by the filtrate that is obtained from the filter.

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