Patent · US Expired

Method of treating a fiber suspension

US5219472A · kind A · utility

7Cited by

4References

4Claims

0Family size

Assignee

A. Ahlstrom Corporation · FI

Inventors

Jorma Elonen · Sirkka, FI
Kaj Henricson · Helsinki, FI
Olavi Pikka · Karhula, FI
Raimo Pitkanen · Karhula, FI

Key dates

Filing date	Jul 29, 1991
Grant date	Jun 15, 1993
Priority date	—
Expiry date	Jul 29, 2011

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21D5/26
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and apparatus for improving the treatment of a gas containing fiber suspension in the pulp and paper industry, especially for increasing the capacity of a screening department, a washing department, a thickening department, a press, a curved screen, or the like, includes the simultaneous separation and removal of the gases prior to the respective treatment stage.

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