Patent · US Active

Method for the causticizing process for producing white liquor

US9187863B2 · kind B2 · utility

1Cited by

2References

8Claims

0Family size

Assignee

VALMET AB · SE

Inventors

Eva Hogebrandt · Karlstad, SE
Alessandra Labigalini Baranovsky · São José dos Pinhais, BR

Key dates

Filing date	Nov 4, 2011
Grant date	Nov 17, 2015
Priority date	—
Expiry date	Feb 1, 2032

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21C11/04
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The method is for preparation of white liquor in a chemical recovery process of the kraft process. The green liquor separation process and the white liquor separation process are taking place in the same common filter apparatus with no dedicated green liquor separation apparatus or any dedicated white liquor separation apparatus. The white liquor separation process and the green liquor separation process are conducted in sequence in the same filter apparatus. The white liquor separation process has a part of the cycle time in the range 20-50% of the total cycle time in the same filter apparatus.

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