Patent · US Expired

Method for the continuous cooking of pulp in a digester system having a top separator

US6203662A · kind A · utility

10Cited by

2References

25Claims

0Family size

Assignee

Kvaerner Pulping AB · SE

Inventors

Vidar Snekkenes · Karlstad, SE
Johan Engstrom · Handen, SE
Krister Olsson · Karlstad, SE
Mikael Lindstrom · Lidingö, SE
Christofer Lindgren · Stockholm, SE
Soren Gustavsson · Karlstad, SE

Key dates

Filing date	Feb 17, 1998
Grant date	Mar 20, 2001
Priority date	—
Expiry date	Feb 17, 2018

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21C7/14
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

This invention relates to a new and improved way of continuously cooking fiber material, wherein temperatures and alkaline levels are controlled to be maintained within specific levels in different zones of the digesting process in order to optimize chemical consumption and heat-economy, and, at the same time, achieving very good pulp properties.

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