Patent · US Active

Feeding system comprising pumps in parallel for a continuous digester

US8888959B2 · kind B2 · utility

0Cited by

5References

7Claims

0Family size

Assignee

VALMET AB · SE

Inventors

Anders Samuelsson · Sundsvall, SE
Jonas Saetherasen · Sundsvall, SE
Daniel Trolin · Karlstad, SE

Key dates

Filing date	Dec 3, 2013
Grant date	Nov 18, 2014
Priority date	—
Expiry date	Dec 3, 2033

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21C1/06
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The feed system is for a continuous digester where at least two pumps are arranged in parallel in the bottom of a pre-treatment vessel and a liquid level of at least 20 meters is established. The system makes it possible to provide a feed system with an improved accessibility and more reliable operation, and to operate the main part of the pumps at optimal efficiency even if the production capacity is reduced.

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